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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| MW, AP (Joint) |
2023-09-28 13:00 |
Kochi | Kochi Castle Museum of History (Primary: On-site, Secondary: Online) |
[Invited Talk]
Spatial mode conversion and mode distribution measurement of light wave with orbital angular momentum Hirokazu Kobayashi (Kochi Univ. of Tech.)  MW2023-82 |
In this study, we introduce spatial mode conversion and mode distribution measurement method for optical vortex beams ha... [more] | MW2023-82 pp.11-14 |
| QIT (2nd) |
2022-12-08 14:00 |
Kanagawa | Keio Univ. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Two-photon phase singularity manifested by propagational distance control of photon pair generated by higher-order LG pump beam Takumi Jinushi, Hirokazu Kobayashi (KUT) |
We report our finding that a phase singularity in two-photon wave function is manifested at the center of the optical ax... [more] | |
| PN, NS, OCS (Joint) |
2021-06-24 14:00 |
Online | Online | [Invited Talk]
Mode multiplier of photonic orbital angular momentum via spatial light modulator Hirokazu Kobayashi, Katsushi Iwashita (Kochi Univ. Tech.) NS2021-26 OCS2021-2 PN2021-8 |
The objective of our research is to realize integer multiplier for the light orbital angular momentum (OAM) with high ef... [more] | NS2021-26 OCS2021-2 PN2021-8 pp.9-13(NS), pp.9-13(OCS), pp.27-31(PN) |
| QIT (2nd) |
2020-12-10 11:50 |
Online | Online | Direct measurement of ultrafast wave function of photons in the time domain Kazuhisa Ogawa, Takumi Okazaki (Hokkaido Univ.), Hirokazu Kobayashi (Kochi Univ. Tech.), Toshihiro Nakanishi (Kyoto Univ.), Akihisa Tomita (Hokkaido Univ.) |
The information encoding in the temporal mode of photons is important in quantum information processing in terms of larg... [more] | |
| QIT (2nd) |
2020-12-11 17:50 |
Online | Online | Formulation and experimental demonstration of complex variance of observables in pre- and post-selected systems Natsuki Abe, Kazuhisa Ogawa (Hokkaido Univ.), Hirokazu Kobayashi (Kochi Univ. of Tech.), Akihisa Tomita (Hokkaido Univ.) |
In pre- and post-selected systems, information of observables can be obtained as weak values. Weak values in pre- and po... [more] | |
| QIT (2nd) |
2018-11-26 16:20 |
Tokyo | The University of Tokyo | Weak value measurement method without probes Kazuhisa Ogawa (Hokkaido Univ.), Hirokazu Kobayashi (Kochi Univ. of Tech.), Akihisa Tomita (Hokkaido Univ.) |
[more] | |
| QIT (2nd) |
2018-06-05 15:40 |
Hiroshima | ICCH Ran | Acquisition method of complex values defined by system's evolution using qubit probes Kazuhisa Ogawa (Hokkaido Univ.), Osamu Yasuhiko (Kyoto Univ.), Hirokazu Kobayashi (Kochi Univ. Tech.), Toshihiro Nakanishi (Kyoto Univ.), Takumi Okazaki, Akihisa Tomita (Hokkaido Univ.) |
[more] | |
| QIT (2nd) |
2017-05-30 16:10 |
Kyoto | Ritesumeikan University, Suzaku Campus | Classical observation of a focused beam spot beyond the diffraction limit by using the time-reversal symmetry of quantum mechanics Kazuhisa Ogawa (Hokkaido Univ.), Hirokazu Kobayashi (Kochi Univ. of Tech.), Akihisa Tomita (Hokkaido Univ.) |
The position-wavenumber entanglement in entangled photon pairs is the basis for various quantum-optical phenomena. By... [more] |
|
| QIT (2nd) |
2017-05-30 16:30 |
Kyoto | Ritesumeikan University, Suzaku Campus | Control of Optical Propagation Distance by Post-selection Hirokazu Kobayashi (Kochi Univ. Tech.), Yutaka Shikano (RCAST, UT/Chapman Univ.) |
In the field of optical imaging and optical measurement, it is important to observe variation of optcal field along prop... [more] | |
| OPE, LQE, OCS | 2015-10-30 11:15 |
Oita | Beppu International Convention Center | Temporal-correlation and spatial-correlation measurement by using two-photon absorption katsuya kawano, Hirokazu Kobayashi, Katsushi Iwashita (kut) OCS2015-60 OPE2015-110 LQE2015-79 |
In this study, we introduce cross-section measurement of optical beam and time delay measurement of optical pulses by us... [more] | OCS2015-60 OPE2015-110 LQE2015-79 pp.97-100 |
| QIT (2nd) |
2015-05-26 09:00 |
Osaka | Osaka University | 2-qubit Weak Measurement Mikko Tukiainen (Univ. Turku/IMS), Hirokazu Kobayashi (KUT), Yutaka Shikano (IMS/Chapman Univ.) |
[more] | |
| QIT (2nd) |
2013-11-19 10:00 |
Tokyo | Waseda Univ. | Direct mapping of Poincare sphere using weak measurement with optical vortex Hirokazu Kobayashi (KUT), Yutaka Shikano (IMS) |
We propose a method to directly determine a two-dimensional quantum state using the weak measurement with the Laguerre G... [more] | |
| OCS, LQE, OPE | 2011-10-27 08:30 |
Kochi | Kochi University of Technology | Imapct of polarization fluctuation on sensing signals of optical pulse correlation measurement and their suppression Hirokazu Kobayashi, Toshimasa Tsuzuki, Toshitake Onishi, Yuhei Masaoka (KUT), Xunjian Xu (Key Laboratry of State Grid Corporation of China), Koji Nonaka (KUT) OCS2011-54 OPE2011-92 LQE2011-55 |
Optical fiber sensing has demonstrated its superiority to weak points of the traditional electric sensors. Many types of... [more] | OCS2011-54 OPE2011-92 LQE2011-55 pp.1-5 |
| LQE | 2008-05-23 10:30 |
Fukui | Bunkyo Campus, Univ. Of Fukui | Generation of photon pairs with photonic crystal fiber and two-photon interference Toshihiro Nakanishi (Kyoto Univ./JST), Kazuo Sakemi, Hirokazu Kobayashi (Kyoto University), Kazuhiko Sugiyama, Masao Kitano (Kyoto Univ./JST) LQE2008-4 |
We investigate a method to produce photon pairs by four-wave mixing in photonic crystal fibers (PCFs). By controlling th... [more] | LQE2008-4 pp.17-22 |
| IA | 2007-05-29 11:00 |
Tokyo | National Institute of Informatics | Improvement of Efficiency and Comparing Methods of Discovering a Relay Node of a Long-Distance Data Transfer with TCP Using a Relay Node Hirokazu Kobayashi (IBM Japan), Masaya Nakayama (Univ. of Tokyo) IA2007-4 |
It is known that available bandwidth between two nodes whose RTT is large and using TCP is lower than link-bandwidth by ... [more] | IA2007-4 pp.17-22 |
| LQE | 2007-05-25 13:00 |
Toyama | Kanazawa Univ. | Photon-pair detection using two-photon absorption in photomultiplier tubes II Hirokazu Kobayashi, Toshihiro Nakanishi, Kazuhiko Sugiyama, Masao Kitano (Kyoto Univ.) LQE2007-7 |
We introduce a method to detect photon pairs using two-photon absorption on the photoelectric surface of photomultiplier... [more] | LQE2007-7 pp.31-34 |
| LQE | 2006-06-02 10:50 |
Fukui | University of Fukui | Photon-pair detection using two-photon absorption in photomultiplier tubes Hirokazu Kobayashi, Toshihiro Nakanishi, Kazuhiko Sugiyama, Masao Kitano (Kyoto Univ.) |
We introduce a method to detect photon pairs using two-photon absorption on the photoelectric surface of photomultiplier... [more] | LQE2006-4 pp.17-21 |
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