Natural sciences, Semiconductors, optical and atomic physics

Slot waveguide enhanced asymmetric photonic crystal nanofiber cavity for fiber-coupled single photons
Subrat Sahu; Kali P. Nayak; Kodanda R. Mangipudi; Rajan Jha
Applied Physics Letters, AIP Publishing, 124, 3, 034002, 15 Jan. 2024, Peer-reviwed, We report a slot waveguide-enhanced asymmetric photonic crystal optical nanofiber (ONF) cavity to realize cavity quantum electrodynamics. We show that the device can strongly enhance the spontaneous emission of a single quantum emitter leading to a Purcell factor as high as 106 and enables single-photon coupling efficiency as high as 86% into fiber-guided modes. The introduction of the slot enhances the Purcell factor by six times as compared to the ONF cavity structure without slot, and the asymmetric cavity design enables unidirectional coupling of single photons. The cavity is designed to minimize the losses leading to a scattering-limited Q-factor and one-pass loss estimated to be 6388 and 1.2%, respectively. This fiber-coupled single-photon device may open advanced possibilities and applications for quantum information processing.
Scientific journal

Single-sided cavity quantum electrodynamics effects on an optical nanofiber
Ramachandrarao Yalla; K. Muhammed Shafi; Kali P Nayak
Frontiers in Optics + Laser Science 2023 (FiO, LS), Optica Publishing Group, Oct. 2023, Peer-reviwed, We present the single-sided cavity-QED effects for single quantum emitters by combining an asymmetric defect mode grating with an optical nanofiber (ONF). We demonstrate significantly enhanced spontaneous emission into one side of the ONF.
International conference proceedings

Quantum Photonics on a Tapered Optical Fiber
Kali Prasanna Nayak
Lead, 2023 Opto-Electronics and Communications Conference (OECC), IEEE, 02 Jul. 2023, Invited
International conference proceedings

Plasmon Enhanced Polarized Single Photon Emission into Optical Fiber
K. Muhammed Shafi; Ramachandrarao Yalla; Kali P. Nayak
Optica Quantum 2.0 Conference and Exhibition, Optica Publishing Group, Jun. 2023, Peer-reviwed, We demonstrate a bright and strongly polarized single-photon source directly coupled into an optical fiber. The system is realized by combining single quantum dots and gold nanorods on optical nanofiber.
International conference proceedings

Silicon-vacancy nanodiamonds on an optical nanofiber for quantum technologies
Ramachandrarao Yalla; Y. Kojima; Y. Fukumoto; H. Suzuki; O. Ariyada; K. M. Shafi; K. P. Nayak
Optica Quantum 2.0 Conference and Exhibition, Optica Publishing Group, Jun. 2023, Peer-reviwed, We demonstrate a fiber-based hybrid nanophotonic device by combining an optical nanofiber and nanodiamonds with silicon-vacancy centers. The current work will lead to intriguing research and applications in quantum technologies.
International conference proceedings

Bright and Polarized Fiber In-Line Single-Photon Source Based on Plasmon-Enhanced Emission into Nanofiber Guided Modes
K. Muhammed Shafi, Ramachandrarao Yalla, and Kali P. Nayak
Corresponding, Phys. Rev. Applied, American Physical Society (APS), 19, 3, 034008-1-034008-9, 02 Mar. 2023, Peer-reviwed, True
Scientific journal, English

Optimization of nanofiber gratings for efficient single-photon collection
S. Sahu; K. P. Nayak; R. Jha
Journal of Optics, IOP Science, 24, 11, 115401-1-115401-7, 13 Oct. 2022, Peer-reviwed
Scientific journal, English

Plasmon Enhanced Polarized Single Photon Emission Into Fiber Guided Modes
K. P. Nayak; K. M. Shafi; R. Yalla
Lead, Frontiers in Optics + Laser Science 2022 (FIO, LS), Optica Publishing Group, JTu5B.26, Oct. 2022, Peer-reviwed, We demonstrate that emission properties of single quantum dots can be strongly enhanced in presence of single gold nanorods leading to a bright and strongly polarized single photon emission into an optical nanofiber.
International conference proceedings, English

Tunable coupling of a single quantum emitter to a composite nanofiber cavity
R. Yalla; K. M. Shafi; K. P. Nayak; K. Hakuta
Conference on Lasers and Electro-Optics/Pacific Rim, CTuP7C_08, Aug. 2022, Peer-reviwed
International conference proceedings, English

Integration of silicon-vacancy centers in nanodiamonds with an optical nanofiber
R. Yalla; Y. Kojima; Y. Fukumoto; H. Suzuki; O. Ariyada; K. M. Shafi; K. P. Nayak; K. Hakuta
Applied Physics Letters, American Institute of Physics (AIP), 120, 241102-1-241102-7, 13 Jun. 2022, Peer-reviwed
Scientific journal, English

One-sided cavity on an optical nanofiber using a composite technique
R. Yalla; K. M. Shafi; K. P. Nayak; K. Hakuta
Conference on Lasers and Electro-Optics (CLEO 2022), Technical Digest Series, Optica Publishing Group, JW3B.139, 15 May 2022, Peer-reviwed
International conference proceedings, English

One-sided composite cavity on an optical nanofiber for cavity QED
R. Yalla; K. M. Shafi; K. P. Nayak; K. Hakuta
Applied Physics Letters, American Institute of Physics (AIP), 120, 071108-1-071108-6, 16 Feb. 2022, Peer-reviwed
Scientific journal, English

Manipulation of Laser-cooled Atoms Using an Optical Nanofiber
K. P. Nayak
Vacuum and Surface Science, Vol. 63, No. 10, 530-535, 2020, Peer-reviwed, Invited
Scientific journal, English

Efficient fiber in-line single photon source based on colloidal single quantum dots on an optical nanofiber
K. M. Shafi, K. P. Nayak, A. Miyanaga, and K. Hakuta
Corresponding, Applied Physics B, 126, 58, 2020, Peer-reviwed
Scientific journal, English

Coherent interaction of orthogonal polarization modes in a photonic crystal nanofiber cavity
J. Keloth; K. P. Nayak; J. Wang; M. Morinaga; K. Hakuta
Optics Express, Vol. 27, 1453-1466, 16 Jan. 2019, Peer-reviwed
Scientific journal, English

Real-time observation of single atoms trapped and interfaced to a nanofiber cavity
K. P. Nayak, J. Wang, and J. Keloth
Lead, Physical Review Letters, 123, 213602, 2019, Peer-reviwed
Scientific journal, English

Photothermal tuning and stabilization of a photonic crystal nanofiber cavity
J. Wang, K. P. Nayak, and J. Keloth
Lead, Optics Letters, 44, 3996, 2019, Peer-reviwed
Scientific journal, English

Two-mode interference in a photonic crystal nanofiber cavity
J. Keloth; K. P. Nayak; J. Wang; M. Morinaga; K. Hakuta
European Optical Society Biennial Meeting, 1, 2018
International conference proceedings, English

Fabrication of a centimeter-long cavity on nanofiber for strong-coupling regime of cavity QED
Jameesh Keloth; K P Nayak; Jie Wang; K Hakuta
Photonics Conference (IPC), 2017 IEEE, 465-466, Oct. 2017
International conference proceedings, English

Composite device for interfacing an array of atoms with a single nanophotonic cavity mode
Mark Sadgrove; Kali P. Nayak
NEW JOURNAL OF PHYSICS, 19, 063003, Jun. 2017, Peer-reviwed
Scientific journal, English

Fabrication of a centimeter-long cavity on a nanofiber for cavity quantum electrodynamics
Jameesh Keloth; K. P. Nayak; K. Hakuta
OPTICS LETTERS, 42, 5, 1003-1006, Mar. 2017, Peer-reviwed
Scientific journal, English

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Kali Prasanna Nayak; Jameesh Keloth; Kohzo Hakuta
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS, Vol. 120, 120, e55136, Feb. 2017, Peer-reviwed
Scientific journal, English

Optical Nanofiber Cavity For Quantum Photonics
K. P. Nayak; J. Keloth; J. Wang; K. Hakuta
The 24th Congress of the International Commission for Optics, F1H-03, 2017
International conference proceedings, English

Efficient fiber-optical interface for nanophotonic devices
T. G. Tiecke; K. P. Nayak; J. D. Thompson; T. Peyronel; N. P. de Leon; V. Vuletic; M. D. Lukin
OPTICA, 2, 2, 70-75, Feb. 2015, Peer-reviwed
Scientific journal, English

24pAN-2 Photonic crystal nanofber cavity using an external grating : towards optimized design and control
Sadgrove M.; Yalla R.; Nayak K. P.; Hakuta K.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 70, 782-782, 2015
Japanese

Cavity Quantum Electrodynamics on a Nanofiber Using a Composite Photonic Crystal Cavity
Ramachandrarao Yalla; Mark Sadgrove; Kali P. Nayak; Kohzo Hakuta
PHYSICAL REVIEW LETTERS, 113, 14, 143601, Sep. 2014, Peer-reviwed
Scientific journal, English

Composite photonic crystal cavity on a nanofiber
Mark Sadgrove; Ramachandrarao Yalla; Kali P. Nayak; Kohzo Hakuta
Optics InfoBase Conference Papers, Optical Society of America (OSA), 2014
International conference proceedings, English

Enhanced spontaneous emission for single quantum emitters on a nanofiber using a composite photonic crystal cavity
Ramachandrarao Yalla; M. Sadgrove; K. P. Nayak; K. Hakuta
POF 2014 - 23rd International Conference on Plastic Optical Fibers, Proceedings, International Conference on Plastic Optical Fibers, 284-286, 2014
International conference proceedings, English

Optical nanofiber technologies for quantum photonics
K. Hakuta; K. P. Nayak; M. Sadgrove; R. R. Yalla; S. Tomaru
POF 2014 - 23rd International Conference on Plastic Optical Fibers, Proceedings, International Conference on Plastic Optical Fibers, 92-95, 2014
International conference proceedings, English

Composite Photonic Crystal Cavity on a Nanofiber
Mark Sadgrove; Ramachandrarao Yalla; Kali P. Nayak; Kohzo Hakuta
2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), 2014, Peer-reviwed
International conference proceedings, English

Optical nanofiber-based photonic crystal cavity
K. P. Nayak; Pengfei Zhang; K. Hakuta
OPTICS LETTERS, 39, 2, 232-235, Jan. 2014, Peer-reviwed
Scientific journal, English

Photoabsorption of Few Atoms Using Photonic Crystal Cavity Based on Nanofiber
Pengfei Zhang; Jameesh Keloth; Kali Nayak; Kohzo Hakuta
Asia Communications and Photonics Conference, ATh3A. 103, 2014
International conference proceedings, English

Photonic crystal nanofiber using an external grating
Mark Sadgrove; Ramachandrarao Yalla; Kali P. Nayak; Kohzo Hakuta
Optics Letters, 38, 14, 2542-2545, 15 Jul. 2013, Peer-reviwed
Scientific journal, English

Photonic crystal formation on optical nanofibers using femtosecond laser ablation technique
K. P. Nayak; K. Hakuta
OPTICS EXPRESS, 21, 2, 2480-2490, Jan. 2013, Peer-reviwed
Scientific journal, English

Photonic Crystal Formation On Tapered Optical Nanofibers Using Femtosecond Laser Ablation Technique
K. P. Nayak; K. Hakuta
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), QTu2B.2, 2013
International conference proceedings, English

Fabrication of Photonic Crystal on Tapered Nanofibers Using a Femtosecond Laser
K. P. Nayak; K. Hakuta
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), ThI3-4, 2013
International conference proceedings, English

Spectroscopy of near-surface atoms using an optical nanofiber
K. P. Nayak; Manoj Das; Fam Le Kien; K. Hakuta
OPTICS COMMUNICATIONS, 285, 23, 4698-4704, Oct. 2012, Peer-reviwed
Scientific journal, English

Manipulating single atoms and photons using optical nanofibers
Kohzo Hakuta; Kali Prasanna Nayak
Advances in Natural Sciences: Nanoscience and Nanotechnology, IOP Publishing Ltd, 3, 1, 2012
Scientific journal, English

Nanofibers with Bragg gratings from equidistant holes
Fam Le Kien; K. P. Nayak; K. Hakuta
JOURNAL OF MODERN OPTICS, 59, 3, 274-286, 2012, Peer-reviwed
Scientific journal, English

Fluorescence photon measurements from single quantum dots on an optical nanofiber
Ramachandrarao Yalla; K. P. Nayak; K. Hakuta
OPTICS EXPRESS, 20, 3, 2932-2941, Jan. 2012, Peer-reviwed
Scientific journal, English

Fabrication of Optical Nanofiber Cavity Using Focused Ion Beam Milling
K. P. Nayak; Y. Kawai; F. L. Kien; K. Nakajima; H. Miyazaki; Y. Sugimoto; K. Hakuta
Quantum Information and Measurement in Proceedings Research in Optical Sciences, QW4B. 4, 2012
International conference proceedings, English

Cavity formation on an optical nanofiber using focused ion beam milling technique
K. P. Nayak; Fam Le Kien; Y. Kawai; K. Hakuta; K. Nakajima; H. T. Miyazaki; Y. Sugimoto
OPTICS EXPRESS, 19, 15, 14040-14050, Jul. 2011, Peer-reviwed
Scientific journal, English

FBG-Nano-Cavity on an Optical Nanofiber
K. P. Nayak; K. Nakajima; F. L. Kien; H. Miyazaki; Y. Sugimoto; K. Hakuta
SPIE Photonics West, 7913-44, 2011
International conference proceedings, English

Nano-Structured Optical Nanofibers For Cavity-QED
K. P. Nayak; Fam Le Kien; K. Nakajima; H. T. Miyazaki; Y. Sugimoto; K. Hakuta
2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), QFC-2, 2011
International conference proceedings, English

Nano-Structured Optical Nanofibers For Cavity-QED
K. P. Nayak; Fam Le Kien; K. Nakajima; H. T. Miyazaki; Y. Sugimoto; K. Hakuta
2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), B-9-O24-021, 2011
International conference proceedings, English

Optical Nanofiber Cavity: A Novel Workbench For Cavity-QED
K. P. Nayak; K. Nakajima; Fam Le Kien; H. T. Miyazaki; Y. Sugimoto; K. Hakuta
Frontiers in Optics/Laser Science (FIO/LS), 1, Oct. 2010, Peer-reviwed
International conference proceedings, English

Measurement of fluorescence emission spectrum of few strongly driven atoms using an optical nanofiber
Manoj Das; A. Shirasaki; K. P. Nayak; M. Morinaga; Fam Le Kien; K. Hakuta
OPTICS EXPRESS, 18, 16, 17154-17164, Aug. 2010, Peer-reviwed
Scientific journal, English

Optical Nanofibers for Manipulating Atoms and Photons
K. P. Nayak; Manoj Das; Fam Le Kien; K. Hakuta
19th International Conference on Laser Spectroscopy, 1, Jun. 2009, Peer-reviwed
International conference proceedings, English

Antibunching and bunching of photons in resonance fluorescence from a few atoms into guided modes of an optical nanofiber
K. P. Nayak; Fam Le Kien; M. Morinaga; K. Hakuta
Physical Review A, Vol. 79, 021801(R), 2009, Peer-reviwed
Scientific journal, English

Single atoms on an optical nanofibre
K. P. Nayak; K. Hakuta
NEW JOURNAL OF PHYSICS, 10, 053003( 9), May 2008, Peer-reviwed
Scientific journal, English

Single atoms on an Optical Nanofiber
K. P. Nayak; Fam Le Kien; K. Hakuta
International Symposium on Quantum-Atom Optics, 1, Dec. 2007, Peer-reviwed
International conference proceedings, English

Optical nanofiber as an efficient tool for manipulating and probing atomic fluorescence
K. P. Nayak; P. N. Melentiev; M. Morinaga; Fam Le Kien; V. I. Balykin; K. Hakuta
OPTICS EXPRESS, 15, 9, 5431-5438, Apr. 2007, Peer-reviwed
Scientific journal, English

Optical nanofibers for manipulating and probing single-atom fluorescence
K. P. Nayak; P. N. Melentiev; M. Morinaga; Fam Le Kien; V. I. Balykin; K. Hakuta
Conference on Lasers and Electro-Optics Europe - Technical Digest, 1, 2007, Peer-reviwed
International conference proceedings, English

Efficient probing of few atom fluorescence through the guided mode of an optical nanofiber
K. P. Nayak; P. N. Melentiev; Nl Morinaga; Fam Le Kien; V. I. Balykin; K. Hakuta
2007 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, VOLS 1-4, 1137-+, 2007, Peer-reviwed
International conference proceedings, English

Single atom as a light coupler for a nanofiber
K. P. Nayak; T. Inoue; M. Morinaga; V. I. Balykin; Fam Le Kien; K. Hakuta
Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006, 1, 2006, Peer-reviwed
International conference proceedings, English

Nanofiber-mediated radiative transfer between two distant atoms
Fam Le Kien; S. Dutta Gupta; K. P. Nayak; K. Hakuta
Physical Review A,, Vol. 72, 063815(11), Dec. 2005, Peer-reviwed
Scientific journal, English

Nanofiber quantum photonics
K. P. Nayak; M. Sadgrove; R. Yalla; F. L. Kien; K. Hakuta
2018, J. Opt., Vol. 20, 073001, English, Peer-reviwed, Introduction scientific journal

9pAZ-10 Realization of a photonic crystal nanofber cavity using an external grating
Sadgrove M.; Yalla R.; Nayak K. P.; Hakuta K.
The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69, 2, 95-95, Japanese, 1342-8349, 110009875526, AA11439205

9pAZ-9 Enhanced Spontaneous Emission on a Nanofiber Using a Composite Photonic Crystal Cavity
Yalla Ramachandrarao; Sadgrove M.; Nayak K. P.; Hakuta K.
The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69, 2, 95-95, English, 1342-8349, 110009875525, AA11439205

Realization of a photonic crystal nanofber using an external grating
Sadgrove M.; Yalla R.; Nayak K.P; Hakuta K.
The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68, 2, 147-147, Japanese, 1342-8349, 110009754662, AA11439205

24aBE-1 Fabrication of nanofiber Bragg grating using UV femtosecond laser
Sakata S.; Nayak K. P.; Hakuta K.
The Physical Society of Japan (JPS), 05 Mar. 2012, Meeting abstracts of the Physical Society of Japan, 67, 1, 181-181, Japanese, 1342-8349, 110009565476, AA11439205

22aZA-4 Observations of Fluorescence Photons From A Few Quantum Dots Using Optical Nanofibers
Kaji I.; Nayak K. P.; Morinaga M.; Okuno T.; Hakuta K.
The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63, 2, 124-124, Japanese, 1342-8349, 110006982842, AA11439205

28aRE-9 Manipulation of Atom and Light Using a Nanofiber
Nayak Kali; Inoue T.; Morinaga M.; Balykin V.I.; Hakuta K.
The Physical Society of Japan (JPS), 04 Mar. 2006, Meeting abstracts of the Physical Society of Japan, 61, 1, 149-149, Japanese, 1342-8349, 110007181667, AA11439205

20pWA-9 Manipulation of Spontaneous Emission Using Sub-Wavelrength Silica Fiber
Kien Fam Le; NayaK Kali; Gupta S. Dutta; Morinaga M.; Hakuta K.
The Physical Society of Japan (JPS), 19 Aug. 2005, Meeting abstracts of the Physical Society of Japan, 60, 2, 67-67, Japanese, 1342-8349, 110004537718, AA11439205

Plasmon Enhanced Polarized Single Photon Emission Into Fiber Guided Modes
K. P. Nayak; K. M. Shafi; R. Yalla
Poster presentation, English, Frontiers in Optics + Laser Science meeting (FIO-LS) 2022, Optica, Rochester, USA, International conference
18 Oct. 2022

Quantum photonics on an all-fiber platform
K. P. Nayak
Invited oral presentation, English, 2022 International Conference on Optical Precision Measurements, Invited, Taiyuan University of Technology, China, International conference
18 Sep. 2022

Plasmon-enhanced bright and polarized single photon emission into nanofiber guided modes
K. P. Nayak; K. M. Shafi; R. Yalla
Oral presentation, English, The Physical Society of Japan (JPS) 2022 Autumn Meeting, The Physical Society of Japan, Tokyo Institute of Technology, Domestic conference
13 Sep. 2022

A single atom quantum interface on a tapered optical fiber
K. P. Nayak
Invited oral presentation, English, Laser Based Sensors, Optical Sensors Conference 2022 (as part of Optica Optical Sensors and Sensing Congress 2022), Invited, Optica, Vancouver, Canada, International conference
14 Jul. 2022

Development of photonic crystal cavities on a 300 nm silica nanofiber for single atom quantum interface
Kali P. Nayak
Poster presentation, English, International Symposium on Novel maTerials and quantum Technologies (ISNTT 2021), NTT Basic Research Laboratories, Japan., Online Conference, International conference
15 Dec. 2021

Interfacing a single quantum emitter to fiber-guided photons
K. P. Nayak
Others, English, Virtual Seminar OIST, Japan, Invited, Online
13 Jan. 2021

Interfacing individually trapped single atoms to a nanofiber cavity
K. P. Nayak
Invited oral presentation, English, 3rd Asia‐Pacific Workshop on Trapped Quantum Systems (APTQS 2020), 28-30th October 2020, Invited, Online Conference, hosted by Osaka University, Japan., International conference
2020

A quantum interface between a trapped single atom and fiber-guided photons
K. P. Nayak
Oral presentation, English, The 43rd Quantum Information Technology Symposium (QIT43), 10-11th December 2020., Online Conference, hosted by University of Electro-Communications, Japan., Domestic conference
2020

Interfacing trapped single atoms to a nanofiber cavity
K. P. Nayak; J. Wang; J. Keloth; K. Hakuta
Oral presentation, English, Physical Society of Japan
17 Mar. 2019

直径 300 nm のナノ光ファイバー共振器の作製と特性測定
福原美穂; K. P. Nayak; 宮本洋子
Oral presentation, Japanese, 日本光学会 Optics and Photonics Japan 2019 講演予稿集, Domestic conference
2019

Fano-type resonances and avoided crossing in a photonic crystal nanofiber cavity
J. Keloth; K. P. Nayak; J. Wang; M. Morinaga; K. Hakuta
Poster presentation, English, International Workshop on Photonics Polymer for Innovation (IWPPI)
15 Oct. 2018

Stabilization of a centimeter-long photonic crystal nanofiber cavity under ultra-high vacuum condition
Kali P. Nayak; Jie Wang; Jameesh Keloth; Kohzo Hakuta
Oral presentation, English, Physical Society of Japan
Sep. 2018

Fano-type resonances and avoided crossing in a photonic crystal nanofiber cavity
J. Keloth; K. P. Nayak; J. Wang; M. Morinaga; K. Hakuta
Oral presentation, English, Physical Society of Japan
Sep. 2018

Investigation of Fano-type resonances in nanofiber based photonic crystal cavity
K. P. Nayak; J. Keloth; M. Morinaga; K. Hakuta
Invited oral presentation, English, SPIE Photonics West, Steep Dispersion Engineering and Opto-Atomic Precision Metrology XI, SPIE Photonics West, OPTO, USA, International conference
Jan. 2018

Developing optical nanofiber cavity for a quantum interface
K. P. Nayak
Invited oral presentation, English, International Symposium on Photonics and Optical Communications, RIEC, Tohoku University, Sendai, Japan., International conference
Oct. 2017

Nanofiber quantum photonics
K. P. Nayak; R. Yalla; J. Keloth; K. Hakuta
Invited oral presentation, English, SPIE Photonics West, Slow Light, Fast Light, and Opto-Atomic Precision Metrology X, SPIE Photonics West, OPTO, USA, International conference
Jan. 2017

Trapping Single Atoms on a Photonic Crystal Nanofiber
Kali P Nayak; Yanqiang Guo; Jameesh Keloth; Tetsuo Kishimoto; Kohzo Hakuta
Oral presentation, English, Physical Society of Japan
Mar. 2016

Optical nanofibers for quantum information application
K. P. Nayak; K. Hakuta
Invited oral presentation, English, The 8th IEEE/ International Conference on Advanced Infocomm Technology, Hangzhou, China, International conference
Oct. 2015

Fabrication of Nanofiber Bragg Grating Using Femtosecond Laser Talbot Interferometric Setup
K P Nayak; K Hakuta
Oral presentation, English, Physical Society of Japan
Aug. 2012

Manipulating Light Propagation using Optical-Nanofiber Cavity
K. P. Nayak; F. L. Kien; K. Hakuta
Invited oral presentation, English, SPIE Photonics West, Advances in Slow and Fast Light V,, SPIE Photonics West, Advances in Slow and Fast Light V, USA, International conference
2012

Cavity Formation on an Optical Nanofiber using Focused Ion Beam Milling Technique
KP Nayak; Fam Le Kien; K Nakajima; Y Kawai; HT Miyazaki; Y Sugimoto; K Hakuta
Oral presentation, English, Physical Society of Japan
Aug. 2011

Optical Nanofiber Cavity: A Novel Workbench For Cavity-QED-II
K. P. Nayak; K. Nakajima; Y. Kawai; Fam Le Kien; H. T. Miyazaki; Y. Sugimoto; K. Hakuta
Oral presentation, English, Physical Society of Japan
Mar. 2011

Manipulating slow light propagation using optical nanofibers with low finesse cavity
Kohzo Hakuta; Kali P. Nayak; Fam L. Kien
Invited oral presentation, English, SPIE Photonics West, Advances in Slow and Fast Light IV,, SPIE Photonics West, Advances in Slow and Fast Light IV, USA, International conference
2011

Optical Nanofiber Cavity: A Novel Workbench For Cavity-QED
K. P. Nayak; K. Nakajima; Y. Kawai; Fam Le Kien; H. T. Miyazaki; Y. Sugimoto; K. Hakuta
Oral presentation, English, Physical Society of Japan
Sep. 2010

Manipulating Quantum States of Light and Matter using an Optical Nanofiber
K. P. Nayak; Fam Le Kien; K. Hakuta
Invited oral presentation, English, Optical Fiber Communications/National Fiber Optic Engineers Conference (OFC/NFOEC), OSA (The Optical Society), San Diego, International conference
Mar. 2010

Two-Color Evanescent Field Trapping of Atoms Around an Optical Nanofiber
K. P. Nayak; K. Miyazaki; K. Hakuta
Oral presentation, English, Physical Society of Japan
Mar. 2010

Trapping Atoms Around An Optical Nanofiber
K. P. Nayak; Manoj Das; Fam Le Kien; K. Hakuta
Oral presentation, English, Physical Society of Japan
Sep. 2009

Investigation of near-surface atoms using an optical nanofiber
K.P. Nayak; Fam Le Kien; K. Hakuta
Oral presentation, English, 日本物理学会,日本物理学会春季大会
Mar. 2009

ナノ光ファイバー近接場中のセシウム原子のレーザー誘起蛍光スペクトルの観測
白崎昭生; Das Manoj; K.P. Nayak; 白田耕藏
Oral presentation, English, 日本物理学会,日本物理学会春季大会
Mar. 2009

ナノ光ファイバー表面上の少数個の量子ドットの蛍光観測II
鍛治一平; 上本真輔; K.P. Nayak; 奥野剛史; 白田耕藏
Oral presentation, English, 日本物理学会,日本物理学会春季大会
Mar. 2009

Optical Nanofibers for Manipulating Atoms and Photons
K. P. Nayak; Fam Le Kien; K. Hakuta
Invited oral presentation, English, 39th Winter Colloquium on the Physics of Quantum Electronics (PQE2009), PQE2009, (Snowbird, Utah, U. S. A., International conference
Jan. 2009

ナノ光ファイバー上の単一量子ドットの蛍光の観測
鍛治一平; K. P. Nayak; 森永実; 奥野剛史; 白田耕藏
Oral presentation, English, 電通大/農工大21世紀COEプログラム合同シンポジウム
Dec. 2008

Cavity enhanced nonlinear optics with sub-wavelength diameter optical fiber
Manoj Das; K. P. Nayak; Fam Le Kien; K. Hakuta
Oral presentation, English, 農工大/電通大 第5回合同シンポジウム
Dec. 2008

Antibunching and bunching in a few atoms resonance fluorescence measured through a nanofiber-II: Effect of excitation and observation geometries
K. P. Nayak; Fam Le Kien; K. Hakuta
Oral presentation, English, 日本物理学会,日本物理学会秋季大会
Sep. 2008

ナノ光ファイバー近接場領域の少数個の量子ドットの蛍光観測
鍛治一平; K.P. Nayak; 森永実; 奥野剛史; 白田耕藏
Oral presentation, English, 日本物理学会,日本物理学会秋季大会 (盛岡)、2008年9月
Sep. 2008

Antibunching and bunching in a few atoms resonance fluorescence measured through a nanofiber
K.P. Nayak; Fam Le Kien; K. Hakuta
Oral presentation, English, 日本物理学会,日本物理学会春季大会
Mar. 2008

Manipulating single atoms and single photons using an optical nanofiber
K. P. Nayak; Manoj Das; Fam Le Kien; K. Hakuta
Oral presentation, English, 第4回電通大/農工大21世紀COEプログラム合同シンポジウム
Dec. 2007

ナノ光ファイバー上の1次元配列原子群による超放射制御（理論）
Fam Le Kien; K.P. Nayak; 白田耕藏
Oral presentation, English, 日本物理学会,日本物理学会秋季大会
Sep. 2007

Single Atoms on an Optical Nanofiber I : Photon Correlation Measurements
Kali Prasanna Nayak; Kohzo Hakuta
Oral presentation, English, 日本物理学会,日本物理学会秋季大会
Sep. 2007

ナノ光ファイバによる冷却原子とシリカ表面の相互作用
K.P. Nayak; M. Das; 白田耕藏
Oral presentation, English, 日本物理学会,日本物理学会春季大会
Mar. 2007

Optical Nanofibers for Manipulating and Probing Single Atom Fluoresence
Kali Nayak; Manoj Das; Fam Le Kien; K. Hakuta
Oral presentation, English, 日本物理学会,日本物理学会春季大会
Mar. 2007

Optical nanofibers for manipulating and probing single-atom fluorescence
K. P. Nayak; P. N. Melentiev; M. Morinaga; V. I. Balykin; Fam Le Kien; K. Hakuta
Oral presentation, English, 第3回農工大/電通大21世紀COEプログラム合同シンポジウム
Dec. 2006

What observations tell us: Atom trapping by manipulating the surface defect potential?
K. P. Nayak; Manoj Das; K. Hakuta
Oral presentation, English, 第3回農工大/電通大21世紀COEプログラム合同シンポジウム
Dec. 2006

Optical Nanofiber as an Efficient Tool for Exploring Atom -Surface Interaction : Towards Manipulation of Atoms and Photons using Optical Nanofibers
Kali Nayak; Manoj Das; M. Morinaga; V. I. Balykin; Fam Le Kien; K. Hakuta
Oral presentation, English, 日本物理学会,日本物理学会秋季大会
Sep. 2006

ナノファイバーによる原子と光の操作
K.P. Nayak; 井上卓; 森永実; V.I. Balykin; 白田耕藏
Oral presentation, English, 日本物理学会,日本物理学会春季大会
Mar. 2006

Manipulation of atom and photon using nanofiber
K. P. Nayak; T. Inoue; J. Q. Liang; M. Morinaga; V. I. Balykin; Fam Le Kien; K. Hakuta
Oral presentation, English, 第2回電通大/農工大21世紀COEプログラム合同シンポジウム
Dec. 2005

サブミクロン光ファイバーによる自然放出の制御
Fam Le Kien; Kali Nayak; S; Dutta Gupta; 森永実; 白田耕藏
Oral presentation, English, 日本物理学会,日本物理学会秋季大会
Sep. 2005

Experimental Electronics Laboratory
Oct. 2022 - Present
The University of Electro-Communications

理工学基礎実験 (英語クラス)
Oct. 2022 - Present
電気通信大学

Graduate School Technical English
Apr. 2022 - Present
電気通信大学

物理工学実験第一
Apr. 2021 - Present
電気通信大学

Jun. 2022 - Present
Optica (Formerly OSA)

Nov. 2008 - Present
The Physical Society of Japan

Developing a fiber optical quantum interface using trapped atoms and nanofiber based photonic crystal cavity
Nayak Kali Prasanna
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Young Scientists (A), In this project, we have developed an optical tweezer based single atom trap on a photonic crystal (PhC) nanofiber cavity. Fabrication of high quality PhC cavities on nanofibers was demonstrated. The cavities were designed for efficient interfacing of trapped single atoms to nanofiber guided modes. The interference between the cavity modes leading to unique spectral features was investigated. Photo-thermal stabilization of the PhC nanofiber cavities under ultra-high vacuum conditions was achieved. It was demonstrated that single atoms can be successfully trapped on the nanofiber cavity and can be observed in real-time through the fiber guided modes. This enables deterministic preparation of single atom events for quantum photonics applications on an all-fiber platform., 15H05462
01 Apr. 2015 - 31 Mar. 2019

Manipulation of single atoms/photons using an optical nanofiber wit cavity structure
NAYAK Kali Prasanna
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Young Scientists (B), One of the key trends of modern quantum optics it to manipulate the quantum optical properties of atoms using various nano-waveguides. In this project, we investigated methods to improve the freedom of the manipulation using optical nanofibers as nano-waveguides. We developed a method to create cavity structure on an optical nanofiber using femto-laser interfered multi-photon fabrication method. Furthermore, we developed a method to create cavity structure on nanofiber by combining with an external nanostructure device (grating with central defect). Using this method, we demonstrated the spontaneous emission enhancement of a single atom (quantum dot) on a nanofiber., 24740271
01 Apr. 2012 - 31 Mar. 2014