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All Technical Committee Conferences  (Searched in: All Years)

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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 82  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OCS, OFT, IEE-CMN, ITE-BCT
(Joint) [detail]
2023-11-09
16:45
Kyoto
(Primary: On-site, Secondary: Online)
Phase Compensation Method in Mode Selective Switch Using Volume Holographic De-multiplexer
Yui Yoshikata, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.)
 [more]
OCS, CS
(Joint)
2023-01-13
09:25
Fukuoka CANAL CITY HAKATA
(Primary: On-site, Secondary: Online)
Phase compensation method in core-selective switch for few-mode multi-core fiber using spatial light modulator
Ryo Watanabe, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.) OCS2022-63
In order to realize Dence SDM transmission using Few-Mode Multi-Core Fiber(FM-MCF), a switching device adapted to spatia... [more] OCS2022-63
pp.18-21
QIT
(2nd)
2022-12-08
14:00
Kanagawa Keio Univ.
(Primary: On-site, Secondary: Online)
[Poster Presentation] Quantum State Generation using DPQPSK Modulator for High Speed Quantum Key Distribution
Yuki Sugawara, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.)
In implementing a high-speed QKD system, distortions in the modulation signal degrade the performance of the QKD system.... [more]
QIT
(2nd)
2022-12-08
14:00
Kanagawa Keio Univ.
(Primary: On-site, Secondary: Online)
[Poster Presentation] Disturbance Evaluation Circuit in Quantum Measurement
Haruki Emori (Hokkaido Univ./NICT), Masanao Ozawa (Chubu Univ./Nagoya Univ.), Akihisa Tomita (Hokkaido Univ.)
Two evaluation methods, the three-state method and the weak measurement method, were proposed for disturbances in quantu... [more]
ET 2022-09-17
14:55
Hiroshima Hiroshima University and Online
(Primary: On-site, Secondary: Online)
Proposal of Generating Propositional Logic Formulas Methods for Learning Support Systems of Intellectual Property Law
Akihisa Tomita, Toru Kano, Takako Akakura (TUS) ET2022-18
The development and spread of information technology, called the 4th Industrial Revolution, has increased the value of i... [more] ET2022-18
pp.48-51
QIT
(2nd)
2022-05-31
11:30
Online Online Mitigation-based benchmarking for NISQ devices
Haruki Emori, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.)
This study applies quantum error mitigation (QEM) according to the type of quantum error and estimates the average gate ... [more]
IE, ITS, ITE-AIT, ITE-ME, ITE-MMS [detail] 2022-02-21
14:40
Online Online Effect of post-exposure time on diffraction efficiency of volume holograms during recording
Yuya Kuroda, Atsushi Okamoto (Hokkaido Univ.), Satoshi Shinada, Yuta Goto (NICT), Akihisa Tomita (Hokkaido Univ.)
To realize the mode division multiplexing transmission, we have proposed a volume holographic mode de-multiplexer (VHDM)... [more]
IE, ITS, ITE-AIT, ITE-ME, ITE-MMS [detail] 2022-02-21
15:05
Online Online Mode diffusion technique for reduction of crosstalk in volume holographic mode demultiplexer
Shuanglu Zhang, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.)
Volume holographic demultiplexers (VHDMs) utilize angularly multiplexed volume holograms to separate multiplexed spatial... [more]
IE, ITS, ITE-AIT, ITE-ME, ITE-MMS [detail] 2022-02-21
15:20
Online Online Resolution in 3D super-resolution projection using single-lens spatial cross modulation method
Xinruinan Zhang, Atsushi Okamoto (Hokkaido Univ.), Hisatoshi Funakoshi (Gifu Univ.), Shuanglu Zhang, Akihisa Tomita (Hokkaido Univ.)
Spatial cross modulation (SCMM) can regenerate optical complex amplitudes by combining a single spatial light modulator ... [more]
ET 2021-12-11
14:55
Online Online Conversion of Patent Act to Logical Formulas Based on Neural Language Model and Legal Condition-Effect Structure
Akihisa Tomita, Toru Kano, Takako Akakura (TUS) ET2021-38
 [more] ET2021-38
pp.53-56
QIT
(2nd)
2021-11-30
- 2021-12-01
Online Online [Poster Presentation] Analysis of the effects of the two-photon temporal distinguishability on measurement-device-independent quantum key distribution
Haobo Ge, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.), Kazuhisa Ogawa (Osaka Univ.)
Measurement-device-independent quantum key distribution (MDI-QKD) protects the receiver from attacks against the measure... [more]
QIT
(2nd)
2021-12-01
09:00
Online Online Direct measurement of matrix elements of density-, process- and measurement-matrices using diagrammatic representation
Masaya Takahashi (Hokkaido Univ.), Kazuhisa Ogawa (Osaka Univ.), Akihisa Tomita (Hokkaido Univ.)
Quantum systems are characterized by density operators for the states, process operators for the time evolution, and POV... [more]
QIT
(2nd)
2021-11-30
13:30
Online Online [Poster Presentation] Analysis of the effects of the two-photon temporal distinguishability on measurement-device-independent quantum key distribution
Haobo Ge, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.), Kazuhisa Ogawa (Osaka Univ.)
 [more]
OCS, CS
(Joint)
2021-01-15
13:00
Online Online Effect of spatial resolution of compensated wave front on performance in volume hologram demultiplexer
Hotaka Hayashi, Atsushi Okamoto (Hokkaido Univ.), Taketoshi Takahata (OPTOQUEST), Satoshi Shinada, Yuta Goto, Naoya Wada (NICT), Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.) OCS2020-34
We are proposing volume hologram mode demultiplexer (VHDM) as a demultiplexer for mode division multiplex communication.... [more] OCS2020-34
pp.37-41
OCS, CS
(Joint)
2021-01-15
13:25
Online Online Experiment on joint switch of few-mode multi-core fiber using spatial light modulator
Yuta Abe, Atushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.), Daiki Soma, Noboru Yoshikane, Takehiro Tsuritani (KDDI Research, Inc.) OCS2020-35
In order to realize SDM transmission using few-mode multi-core fibers (FM-MCFs), a switching device adapted to spatially... [more] OCS2020-35
pp.42-45
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]
OFT, ITE-BCT, OCS, IEE-CMN [detail] 2020-11-12
16:25
Online Online Wave front compensation method for output signal in volume hologram demultiplexer
Hotaka Hayashi, Atsushi Okamoto (Hokkaido Univ.), Taketoshi Takahata (OPTOQUEST), Satoshi Shinada, Yuta Goto, Naoya Wada (NICT), Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.) OCS2020-25
Volume Hologram mode De-Multiplexer (VHDM) using Volume Hologram (VH) is extremely cost effective because it can multipl... [more] OCS2020-25
pp.11-14
ITE-HI, IE, ITS, ITE-MMS, ITE-ME, ITE-AIT [detail] 2020-02-28
13:15
Hokkaido Hokkaido Univ.
(Cancelled but technical report was issued)
Numerical analysis of relationship between light utilization efficiency and modulation accuracy in complex amplitude modulation based on iterative spatial cross modulation
Tomohiro Maeda, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
 [more]
QIT
(2nd)
2019-11-18
13:50
Tokyo Gakushuin University [Poster Presentation] Analysis of the effects of the two-photon distinguishability on decoy state measurement-device-independent quantum key distribution
Haobo Ge, Akihisa Tomita, Kazuhisa Ogawa, Atsushi Okamoto (Hokkaido Univ.)
Measurement-device-independent quantum key distribution (MDI-QKD) protects the receiver from attacks against the measure... [more]
 Results 1 - 20 of 82  /  [Next]  
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