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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 55  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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.)
(Advance abstract in Japanese is available) [more]
ITE-HI, IE, ITS, ITE-MMS, ITE-ME, ITE-AIT [detail] 2020-02-28
13:00
Hokkaido Hokkaido Univ. Influence of the distance between the observation plane and the focal plane on the resolution in tomographic imaging using VPC
Jiang Mengying, Atsushi Okamoto, Satosi Kawashima, Kazuhisa Ogawa, AkihisaTomita (Hokkaido Univ.)
 [more]
ITE-HI, IE, ITS, ITE-MMS, ITE-ME, ITE-AIT [detail] 2020-02-28
13:15
Hokkaido Hokkaido Univ. 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]
OCS, LQE, OPE 2019-10-18
14:30
Kagoshima   Improvement of Diffraction Efficiency of Mode Demultiplexer Using Volume Hologram at 1550 nm
Taijun Shiba, Atsushi Okamoto, Hotaka Hayashi, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.), Taketoshi Takahata (OPTOQUEST), Yuta Goto, Satoshi Shinada, Naoya Wada (NICT) OCS2019-47 OPE2019-85 LQE2019-63
To realize the mode division multiplexing transmission, we have proposed a volume holographic mode de-multiplexer (VHDM)... [more] OCS2019-47 OPE2019-85 LQE2019-63
pp.105-108
QIT
(2nd)
2019-05-20
17:50
Fukuoka Kyushu University, Chikushi Campus Numerical analysis of decoy state BBM92 quantum key distribution protocol with multi-photon rejection source
Takumi Matsuura, Liang Min, Kazuhisa Ogawa, Atsushi Okamoto, Akihisa Tomita (Hokkaido Univ.)
The BB84 protocol, which is a representative quantum key distribution protocol, requires a single photon source as a lig... [more]
ITS, IE, ITE-MMS, ITE-HI, ITE-ME, ITE-AIT [detail] 2019-02-19
11:30
Hokkaido Hokkaido Univ. Improvement of noise separation accuracy in image reconstruction in virtual phase conjugation based optical tomography
Sota Nagayoshi, Atsushi Okamoto (Hokkaido Univ.), Yuta Goto (Fukui Univ.), Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
Virtual phase conjugation based optical tomography (VPC-OT) realizes single-shot three-dimensional (3D) measurement. In ... [more]
ITS, IE, ITE-MMS, ITE-HI, ITE-ME, ITE-AIT [detail] 2019-02-20
13:00
Hokkaido Hokkaido Univ. Analysis on Basic Operation of Virtual Shift Method for Accuracy Improvement of Holographic Diversity Interferometry
Nobuhiro Yamagishi, Atsushi Okamoto, Tomohiro Maeda (Hokkaido Univ.), Jin Nozawa (Aisin Seiki), Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
Holographic diversity interferometry (HDI) enables single-shot phase measurement by using two image sensors. However, mi... [more]
ITS, IE, ITE-MMS, ITE-HI, ITE-ME, ITE-AIT [detail] 2019-02-20
13:45
Hokkaido Hokkaido Univ. Accuracy improvement of phase modulated signal by calibrating spatial light modulator
Tomohiro Maeda, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
The modulation accuracy of phase-only spatial light modulators (SLMs) decreases by the distortion of the phase response ... [more]
ITE-BCT, OCS, OFT, IEE-CMN [detail] 2018-11-09
15:45
Okayama Kurashiki-City-Geibunnkan Separation Characteristics of Volume Holographic Spatial Mode Demultiplexer at 1550 nm Wavelength
Satoshi Shinada (NICT), Shimpei Shimizu, Taijun Shiba (Hokkaido Univ.), Taketoshi Takahata (Optoquest), Atsushi Okamoto (Hokkaido Univ.), Naoya Wada (NICT) OCS2018-58
Spatial-mode multiplexer and demultiplexer (MUX/DEMUX) remains essential for systems of mode division multiplexing (MDM)... [more] OCS2018-58
pp.75-79
QIT
(2nd)
2018-06-04
13:20
Hiroshima ICCH Ran [Poster Presentation] Tracking Quantum Error Correction
kosuke Fukui, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.)
To implement fault-tolerant quantum computation with continuous variables, the Gottesman–Kitaev–Preskill (GKP) qubit has... [more]
ITS, IE, ITE-MMS, ITE-HI, ITE-ME, ITE-AIT [detail] 2018-02-16
13:00
Hokkaido Hokkaido Univ. Experiment on digital image multiplexing/demultiplexing using virtual phase conjugation for high density holographic memory
Yuta Goto, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
We experimentally implemented and proved the concept of the multiplexing and demultiplexing in digital images using VPC,... [more]
QIT
(2nd)
2017-11-16
13:50
Saitama Saitama University [Poster Presentation] BB84 Quantum Key Distribution system with a Dual-Parallel Modulator
Weiyang Zhang, Yu Kadosawa, Akihisa Tomita, Kazuhisa Ogawa, Atsushi Okamoto (Hokkaido Univ.)
The state preparation flaw which is generated by the pulse fluctuation in the signal applied for the phase modulator in ... [more]
OFT, OCS, LSJ
(Joint) [detail]
2017-09-01
10:50
Hokkaido Hokkaido Univ. Separation Characteristics of Volume Holographic Spatial Mode Demultiplexer at 850 nm Wavelength
Shimpei Shimizu, Atsushi Okamoto, Fumiya Mizukawa, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.), Taketoshi Takahata (OPTOQUEST), Satoshi Shinada, Naoya Wada (NICT) OCS2017-31
In mode division multiplexing transmission, the spatial mode demultiplexing technique is required on the receive side. A... [more] OCS2017-31
pp.45-50
OFT, OCS, LSJ
(Joint) [detail]
2017-09-01
11:15
Hokkaido Hokkaido Univ. Experiment on selective mode conversion using dual-phase modulation
Tomohiro Maeda, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.), Yuta Wakayama, Takehiro Tsuritani (KDDI Research) OCS2017-32
For realizing the optical network based on mode division multiplexing, it is necessary to develop the technology which a... [more] OCS2017-32
pp.51-55
QIT
(2nd)
2017-05-29
15:00
Kyoto Ritesumeikan University, Suzaku Campus [Poster Presentation] Method of reducing the propagation of errors in a controlled-phase gate with the GKP qubit
Kosuke Fukui, Akihisa Tomita, Atsushi Okamoto (Hokkaido Univ.)
 [more]
QIT
(2nd)
2017-05-29
15:00
Kyoto Ritesumeikan University, Suzaku Campus [Poster Presentation] Decoy State Quantum Key Distribution for BBM92 Protocol
Liang Min, Akihisa Tomida, Atsushi Okamoto (Hokkaido Univ)
 [more]
IE, ITS, ITE-AIT, ITE-HI, ITE-ME, ITE-MMS, ITE-CE [detail] 2017-02-20
13:30
Hokkaido Hokkaido Univ. Characterization of multiplexing technique using virtual phase conjugation for high density holographic memory
Yuta Goto, Atsushi Okamoto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
In the holographic memory, the achievable multiplexing number of holograms and the recording density are inherently rest... [more]
IE, ITS, ITE-AIT, ITE-HI, ITE-ME, ITE-MMS, ITE-CE [detail] 2017-02-20
13:45
Hokkaido Hokkaido Univ. Experiment on Virtual Shift Method for Reduction of Alignment Error in Holographic Diversity Interferometry
Nobuhiro Yamagishi, Atsushi Okamoto, Jin Nozawa, Yuta Goto, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
In phase measurement using Holographic Diversity Interferometry (HDI), misalignment of two holograms captured by two ima... [more]
IE, ITS, ITE-AIT, ITE-HI, ITE-ME, ITE-MMS, ITE-CE [detail] 2017-02-20
14:15
Hokkaido Hokkaido Univ. Experiment on spatial mode separation and conversion technique using volume hologram
Fumiya Mizukawa, Atsushi Okamoto, Yuta Goto, Shimpei Shimizu, Kazuhisa Ogawa, Akihisa Tomita (Hokkaido Univ.)
 [more]
 Results 1 - 20 of 55  /  [Next]  
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