本文へスキップ

Shimizu lab. @ UEC

Welcome to the home page of Shimizu group at UEC.
We are working on quantum optics and quantum information technologies.


Recent newsnews

June 1, 2020
New publication: "Generation of pseudo-sunlight via quantum entangled photons and the interaction with molecules," Yuta Fujihashi, Ryosuke Shimizu, and Akihito Ishizaki
Phys. Rev. Research 2, 023256/1-7 (2020).
March 28, 2019
New publication: "Theoretical investigation of a spectrally pure-state generation from isomorphs of KDP crystal at near-infrared and telecom wavelengths," Rui-Bo Jin, Neng Cai, Ying Huang, Xiang-Ying Hao, Shun Wang, Fang Li, Hai-Zhi Song, Qiang Zhou, and Ryosuke Shimizu
Phys. Rev. Applied 11, 034067 (2019).
January 16, 2019
New publication: "Direct generation of frequency-bin entangled photons via two-period quasi-phase-matched parametric downconversion," Fumihiro Kaneda, Hirofumi Suzuki, Ryosuke Shimizu, and Keiichi Edamatsu,
Opt. Express 27 (2), 1416-1424 (2019).
September 7, 2018
New publication: "Time-frequency duality of biphotons for quantum optical synthesis." Rui-bo Jin, Takuma Saito, and Ryosuke Shimizu,
Phys. Rev. Applied 10, 034011/1-11 (2018).
August 27, 2018
New publication: "Free space optical secret key agreement," Hiroyuki Endo, Mikio Fujiwara, Mitsuo Kitamura, Orie Tsuzuki, Toshiyuki Ito, Ryosuke Shimizu, Masahiro Takeoka, and Masahide Sasaki,
Opt. Express 26 (18), 23305-23332 (2018).
August 1, 2018
New publication: "Quantum manipulation of biphoton spectral distributions in a 2D frequency space toward arbitrary shaping of a biphoton wave packet," Rui-bo Jin, Ryoji Shiina, and Ryosuke Shimizu,
Opt. Express 26 (16), 21153-21158 (2018).
July 18, 2018
New publication: "Free-space optical wiretap channel and experimental secret key agreement in 7.8 km terrestrial link," Mikio Fujiwara, Toshiyuki Ito, Mitsuo Kitamura, Hiroyuki Endo, Orie Tsuzuki, Morio Toyoshima, Hideki Takenaka, Yoshihisa Takayama, Ryosuke Shimizu, Masahiro Takeoka, Ryutaroh Matsumoto, and Masahide Sasaki,
Opt. Express 26 (15), 19513-19523 (2018).
January 24, 2018
New publication: "Extended Wiener-Khinchin theorem for quantum spectral analysis," Rui-Bo Jin and Ryosuke Shimizu, Optica 5 (2), 93-98 (2018).
June 30, 2017
New publication: "Monotonic quantum-to-classical transition enabled by positively correlated biphotons," Rui-Bo Jin, Guo-Qun Chen, Hui Jing, Changliang Ren, Pei Zhao, Ryosuke Shimizu, and Pei-Xiang Lu, Phys. Rev. A 95, 062341/1-8 (2017).
November 23, 2016
New publication: "Simple method of generating and distributing frequency-entangled qudits," R.-B. Jin, R. Shimizu, M. Fujiwara, M. Takeoka, T. Yamashita, S. Miki, H. Terai, and M. Sasaki, Qunatum Sci. Technol. 1, 015004/1-9 (2016).
November 14, 2016
New publication: "Detection-dependent six-photon Holland-Burnett state interference," R.-B. Jin, M. Fujiwara, R. Shimizu, R.J. Collins, G.S. Buller, T. Yamashita, S. Miki, H. Terai, M. Takeoka, and M. Sasaki, Sci. Rep. 6, 36914/1-7 (2016).
April 15, 2016
New publication: "Free-space optical channel estimation for physical layer security," H. Endo, M. Fujiwara, M. Kitamura, T. Ito, M. Toyoshima, Y. Takayama, H. Takenaka, R. Shimizu, N. Laurenti, G. Vallone, P. Villoresi, T. Aoki, and M. Sasaki, Opt. Express 24 (8), 8940 (2016) .
October 28, 2015
New publication: "Spectrally resolved Hong-Ou-Mandel interference between independent sources," R.-B. Jin, T. Gerrits, M. Fujiwara, R. Wakabayashi, T. Yamashita, S. Miki, H. Terai, R. Shimizu, M. Takeoka, and M. Sasaki, Opt. Express 23 (22), 28836 (2015) .
March 25, 2015
Our paper on broadband biphoton generation is highlighted in UEC e-Bulletin. link
March 20, 2015
New publication: "Highly efficient entanglement swapping and teleportation at telecom wavelength," R.-B. Jin, M. Takeoka, U. Takagi, R. Shimizu, and M. Sasaki, Sci. Rep. 5, 9333 (2015).
March 16, 2015
English web page has been opened.

Quantum Optics Laboratory
Shimizu Group @ UEC

Univ. of Electro-Communications
East-6 Bldg. 416
1-5-1 Chofugaoka, Chofu
Tokyo 182-8585, Japan

Phone +81-42-443-5920