Ryo Okamoto

J-GLOBAL         Last updated: Oct 25, 2017 at 09:23
 
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Name
Ryo Okamoto
Affiliation
Kyoto University
Section
Graduate School of Engineering
Job title
Associate Professor

Profile

Quantum optics experimentalist interested in quantum metrology, quantum measurement and quantum computing.

Published Papers

 
Ryo Okamoto, Satoshi Oyama, Koichi Yamagata, Akio Fujiwara, Shigeki Takeuchi, Shigeki Takeuchi, Shigeki Takeuchi
Physical Review A   96    Aug 2017
© 2017 American Physical Society. We herein report the experimental demonstration of adaptive quantum state estimation for totally unknown photonic qubits. Similar to our previous study [R. Okamoto, Phys. Rev. Lett. 109, 130404 (2012)PRLTAO0031-90...
Ono T, Okamoto R, Tanida M, Hofmann HF, Takeuchi S
Scientific reports   7 45353   Mar 2017   [Refereed]
Realization of multiplexing of heralded single photon sources using photon number resolving detectors.
Kiyohara T, Okamoto R, Takeuchi S
Optics express   24(24) 27288-27297   Nov 2016   [Refereed]
Satoshi Hara, Takafumi Ono, Ryo Okamoto, Takashi Washio, Shigeki Takeuchi
Physical Review A   94    Oct 2016
© 2016 American Physical Society. The accurate detection of small deviations in given density matrice is important for quantum information processing, which is a difficult task because of the intrinsic fluctuation in density matrices reconstructed...
Okamoto R, Takeuchi S
Scientific reports   6 35161   Oct 2016   [Refereed]
Okano M, Lim HH, Okamoto R, Nishizawa N, Kurimura S, Takeuchi S
Scientific reports   5 18042   Dec 2015   [Refereed]
Scalable spatial superresolution using entangled photons.
Rozema LA, Bateman JD, Mahler DH, Okamoto R, Feizpour A, Hayat A, Steinberg AM
Physical review letters   112(22) 223602   Jun 2014   [Refereed]
Satoshi Hara, Satoshi Hara, Takafumi Ono, Takafumi Ono, Ryo Okamoto, Ryo Okamoto, Takashi Washio, Shigeki Takeuchi, Shigeki Takeuchi
Physical Review A - Atomic, Molecular, and Optical Physics   89    Feb 2014
The accurate detection of small deviations in given density matrices is important for quantum information processing. Here we propose a method based on the concept of data mining. We demonstrate that the proposed method can more accurately detect ...
SUBASHCHANDRAN SHANTHI, OKAMOTO RYO, ZHANG LABAO, TANAKA AKIRA, OKANO MASAYUKI, KANG LIN, CHEN JIAN, WU PEIHENG, TAKEUCHI SHIGEKI
Jpn J Appl Phys   52(10,Issue 1) 102801.1-102801.5   Oct 2013
OKANO MASAYUKI, OKAMOTO RYO, TANAKA AKIRA, ISHIDA SHUTARO, NISHIZAWA NORIHIKO, TAKEUCHI SHIGEKI
Phys Rev A   88(4,Pt.B) 043845.1-043845.5   Oct 2013
Ono T, Okamoto R, Takeuchi S
Nature communications   4 2426   2013   [Refereed]
Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement.
Tanaka A, Okamoto R, Lim HH, Subashchandran S, Okano M, Zhang L, Kang L, Chen J, Wu P, Hirohata T, Kurimura S, Takeuchi S
Optics express   20 25228-25238   Nov 2012   [Refereed]
Okamoto R, Iefuji M, Oyama S, Yamagata K, Imai H, Fujiwara A, Takeuchi S
Physical review letters   109(13) 130404   Sep 2012   [Refereed]
Highly indistinguishable heralded single-photon sources using parametric down conversion.
Tanida M, Okamoto R, Takeuchi S
Optics express   20 15275-15285   Jul 2012   [Refereed]
Generation of broadband spontaneous parametric fluorescence using multiple bulk nonlinear crystals.
Okano M, Okamoto R, Tanaka A, Subashchandran S, Takeuchi S
Optics express   20 13977-13987   Jun 2012   [Refereed]
Okamoto R, O'Brien JL, Hofmann HF, Takeuchi S
Proceedings of the National Academy of Sciences of the United States of America   108(25) 10067-10071   Jun 2011   [Refereed]
Phase shift spectra of a fiber-microsphere system at the single photon level.
Tanaka A, Asai T, Toubaru K, Takashima H, Fujiwara M, Okamoto R, Takeuchi S
Optics express   19 2278-2285   Jan 2011   [Refereed]
Fujiwara H, Kawabe Y, Okamoto R, Takeuchi S and Sasaki K
Journal of the Optical Society of America B   28(3) 422-431   2011   [Refereed]
Okamoto R, O'Brien JL, Hofmann HF, Nagata T, Sasaki K, Takeuchi S
Science (New York, N.Y.)   323(5913) 483-485   Jan 2009   [Refereed]
Beating the standard quantum limit: phase super-sensitivity of N-photon interferometers
Okamoto R, Hofmann HF, Nagata T, O'Brien JL, Sasaki K, Takeuchi S
New Journal of Physics   10 073033   Jul 2008   [Refereed]
Quantum interference fringes beating the diffraction limit.
Kawabe Y, Fujiwara H, Okamoto R, Sasaki K, Takeuchi S
Optics express   15 14244-14250   Oct 2007   [Refereed]
Nagata T, Okamoto R, O'brien JL, Sasaki K, Takeuchi S
Science (New York, N.Y.)   316(5825) 726-729   May 2007   [Refereed]
Analysis of an experimental quantum logic gate by complementary classical operations
Hofmann HF, Okamoto R, Takeuchi S
Modern Physics Letters   21 1837   2006   [Refereed]
Okamoto R, Takeuchi S, Sasaki K
Physical Review A   74(1) 011801   2006   [Refereed]
Demonstration of an optical quantum controlled-NOT gate without path interference.
Okamoto R, Hofmann HF, Takeuchi S, Sasaki K
Physical review letters   95 210506   Nov 2005   [Refereed]
Okamoto R, Takeuchi S, Sasaki K
Journal of the Optical Society of America B   22(11) 2393-2401   2005   [Refereed]
Takeuchi S, Okamoto R, Sasaki K
Applied optics   43(30) 5708-5711   Oct 2004   [Refereed]

Misc

 
OKAMATO Ryo, TAKEUCHI Shigeki
光学   42(10) 500-505   Oct 2013
竹内 繁樹, 岡本 亮, 岡野 真之
オプトロニクス   31(11) 121-125   Nov 2012
Okamoto Ryo, O'Brien Jeremy L., Hofmann Holger F., Takeuchi Shigeki
Meeting abstracts of the Physical Society of Japan   66(2)    Aug 2011
Tanida Masato, Okamoto Ryo, Takeuchi Shigeki
Meeting abstracts of the Physical Society of Japan   66(2)    Aug 2011
Iefuji Minako, Okamoto Ryo, Yamagata Koichi, Imai Hiroshi, Fujiwara Akio, Takeuchi Shigeki
Meeting abstracts of the Physical Society of Japan   66(2)    Aug 2011