Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
QIT (2nd) |
2023-05-29 13:50 |
Kyoto |
Katsura Campus, Kyoto University |
Experimental demonstration of multiphoton quantum correlation beyond the linear optics limit Geobae Park, Ryo Okamoto (Kyoto Univ.), Holger F. Hofmann (Hiroshima Univ.), Shigeki Takeuchi (Kyoto Univ.) |
Single photon sources and linear optics networks play an important role in photonic quantum technologies. The states gen... [more] |
|
QIT (2nd) |
2023-05-29 15:45 |
Kyoto |
Katsura Campus, Kyoto University |
Quantum infrared spectroscopy in the fingerprint region Yu Mukai, Ryo Okamoto, Shigeki Takeuchi (Kyoto Univ.) |
Quantum infrared spectroscopy (QIRS) is one of the photonic quantum sensing techniques using frequency entangled photon ... [more] |
|
QIT (2nd) |
2022-12-08 14:00 |
Kanagawa |
Keio Univ. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Optimizing the coupling efficiency of collinear spontaneous parametric down-conversion photon pairs into single-mode fibers Geobae Park, Nicolas Schwaller, Ryo Okamoto, Shigeki Takeuchi (Kyoto Univ) |
Spontaneous parametric down conversion (SPDC) plays important role in photonic quantum information science. In particula... [more] |
|
QIT (2nd) |
2022-05-30 13:30 |
Online |
Online |
[Poster Presentation]
Demonstration of ultra-broadband frequency entangled photon-pairs generated in an on-chip ring resonator Yushi Hamayama, Kenta Sugiura, Dan Nakamura, Ryo Okamoto (Kyoto Univ.), Brent E. Little (CAS), Sai Tak CHU (CityU), Shigeki Takeuchi (Kyoto Univ.) |
Frequency entangled photon-pairs are widely used in quantum technologies such as quantum metrology
and quantum informat... [more] |
|
QIT (2nd) |
2022-05-30 13:30 |
Online |
Online |
[Poster Presentation]
Toward Realization of a Two-dimensional Quantum Walk with Helical Boundary Conditions I
-- Generation and Evaluation of Petal-shaped Beams -- Yutaro Okamoto (Kyoto Univ.), Hideaki Obuse (Hokkaido Univ.), Shigeki Takeuchi, Ryo Okamoto (Kyoto Univ.) |
Quantum walk is a quantum version of random walk and is expected to have applications in quantum simulation and quantum ... [more] |
|
QIT (2nd) |
2022-05-30 13:30 |
Online |
Online |
[Poster Presentation]
Realization of Compression of Temporal Correlation Width of Frequency Entangled Photon Pairs Using Evolutionary Strategy Algorithm Ryoya Saito, Itsumu Fujita, Shunsuke Sasaki, Naofumi Abe (Kyoto Univ), Mamoru Hisamitsu, Katsuhiko Tokuda (Shimadzu Corporation), Ryo Okamoto, Shigeki Takeuchi (Kyoto Univ) |
Since broadband frequency entangled photon pairs can realize ultra-short temporal correlation width, those are
expected... [more] |
|
QIT (2nd) |
2019-05-20 13:20 |
Fukuoka |
Kyushu University, Chikushi Campus |
[Poster Presentation]
Experimental demonstration of adaptive quantum state estimation for dynamic quantum states Saki Nohara, Ryo Okamoto (Kyoto Univ.), Akio Fujiwara (Osaka Univ.), Shigeki Takeuchi (Kyoto Univ.) |
For the development of quantum information technology, it is essential to provide a method to efficiently estimate the q... [more] |
|
QIT (2nd) |
2019-05-20 13:20 |
Fukuoka |
Kyushu University, Chikushi Campus |
[Poster Presentation]
Estimation of the quality factor of an on-chip ring resonator using coincidence measurement Kenta Sugiura, Ryo Okamoto (Kyoto Univ.), Sai T. Chu (City Univ. of Hong Kong), Brent E. Little (CAS), Shigeki Takeuchi (Kyoto Univ.) |
Recently, photon-pair sources using optical waveguides are considered promising. Especially, high-Q ring resonators have... [more] |
|
QIT (2nd) |
2019-05-20 13:20 |
Fukuoka |
Kyushu University, Chikushi Campus |
[Poster Presentation]
Study on the spatial separation of entangled photon pairs in the same spatial mode Yuki Kamei, Bo Cao, Takayuki Kiyohara, Ryo Okamoto, Shigeki Takeuchi (Kyoto Univ.) |
[more] |
|
QIT (2nd) |
2019-05-20 13:20 |
Fukuoka |
Kyushu University, Chikushi Campus |
[Poster Presentation]
Generation of visible-infrared entangled photon pairs using a LiNbO3 crystal Masaya Arahata, Bo Cao, Ryo Okamoto, Shigeki Takeuchi (Kyoto Univ.) |
[more] |
|
QIT (2nd) |
2018-11-26 13:30 |
Tokyo |
The University of Tokyo |
[Poster Presentation]
Generation of non-Fock states using entangled two multi-photon multi-mode systems Issei Matsumoto, Takayuki Kiyohara, Ryo Okamoto (Kyoto Univ.), Holger F. Hofmann (Hiroshima Univ.), Shigeki Takeuchi (Kyoto Univ.) |
Non-Fock state cannot be generated by using multiple single-photons and an unitary transform circuit composed of linear ... [more] |
|
QIT (2nd) |
2018-06-04 13:20 |
Hiroshima |
ICCH Ran |
[Poster Presentation]
Serial-parallel conversion with heralded single photons Takayuki Kiyohara, Okamoto Ryo, Takeuchi Shigeki (Kyoto Univ.) |
To realize large scale photonic quantum technologies, it is important to use a source that emits multipleindistinguishab... [more] |
|
QIT (2nd) |
2018-06-04 13:20 |
Hiroshima |
ICCH Ran |
[Poster Presentation]
Study on the temporal correlation measurement of entangled photon pairs Masato Yoshikawa, Tatsuki Deguchi, Ryo Okamoto (Kyoto Univ.), Hwan Hong Lim, Sunao Kurimura (NIMS), Shigeki Takeuchi (Kyoto Univ.) |
[more] |
|
QIT (2nd) |
2018-06-04 13:20 |
Hiroshima |
ICCH Ran |
[Poster Presentation]
Correlation between multi frequency modes of photon-pairs generated by an on-chip ring resonator Kenta Sugiura, Ryo Okamoto (Kyoto Univ.), Labao Zhang, Lin Kang, Jian Chen, Peiheng Wu (Nanjing Univ.), Sai T. Chu (City Univ. of Hong Kong), Shigeki Takeuchi (Kyoto Univ.) |
Frequency entangled photon-pairs have a potential for various quantum technology applications including optical coherenc... [more] |
|
QIT (2nd) |
2018-06-04 13:20 |
Hiroshima |
ICCH Ran |
[Poster Presentation]
Realization of High-Speed Adaptive Quantum State Estimation 2 Saki Nohara, Ryo Okamoto (Kyoto Univ.), Koichi Yamagata (Chuo Univ.), Akio Fujiwara (Osaka Univ.), Shigeki Takeuchi (Kyoto Univ.) |
For the development of quantum information technology, it is essential to provide a method to efficiently estimate the q... [more] |
|
QIT (2nd) |
2017-11-16 13:50 |
Saitama |
Saitama University |
[Poster Presentation]
Transverse resolution improvement in quantum optical coherence tomography Yoko Kawaguchi, Kyohei Hayama, Ryo Okamoto (Kyoto Univ.), Norihiko Nishizawa (Nagoya Univ.), Shigeki Takeuchi (Kyoto Univ.) |
Quantum optical coherence tomography (QOCT), a quantum version of optical coherence tomography (OCT), has been proposed ... [more] |
|
QIT (2nd) |
2017-05-29 15:00 |
Kyoto |
Ritesumeikan University, Suzaku Campus |
[Poster Presentation]
Adaptive quantum state estimation for dynamic quantum states Saki Nohara, Ryo Okamoto (Kyoto Univ.), Akio Fujiwara (Osaka Univ.), Shigeki Takeuchi (Kyoto Univ.) |
For the development of quantum information technology, it is essential to provide a method to efficiently estimate the q... [more] |
|
QIT (2nd) |
2017-05-29 15:00 |
Kyoto |
Ritesumeikan University, Suzaku Campus |
[Poster Presentation]
Photon-pair generation using Hydex ring resonator Kenta Sugiura, Yusuke Ono, Ryo Okamoto (Kyoto Univ.), Labao Zhang, Lin Kang, Jian Chen, Peiheng Wu (Nanjing Univ.), Sai T. Chu (CityU), Shigeki Takeuchi (Kyoto Univ.) |
[more] |
|
QIT (2nd) |
2016-11-24 13:00 |
Ibaraki |
KEK Kobayashi-hall |
[Poster Presentation]
Realization of High-Speed Adaptive Quantum State Estimation Saki Nohara, Ryo Okamoto (Kyoto Univ.), Koichi Yamagata (Chuo Univ.), Akio Fujiwara (Osaka Univ.), Shigeki Takeuchi (Kyoto Univ.) |
For the development of quantum information technology, it is essential to provide a method to efficiently estimate the q... [more] |
|
QIT (2nd) |
2016-11-24 13:00 |
Ibaraki |
KEK Kobayashi-hall |
[Poster Presentation]
Study on the coherence of multiphoton-multimode entanglement 2 Naoki Yamashiro, Takayuki Kiyohara, Ryo Okamoto (Kyoto Univ.), Jun-Yi WU, Holger F. Hofmann (Hiroshima Univ.), Shigeki Takeuchi (Kyoto Univ.) |
Quantum interference between photons plays a crucial role for linear optics quantum circuits for quantum metrology, quan... [more] |
|