Recent newsnews

December 22, 2022

New publication: "Quantum interferometric spectroscopy of a biexciton," Hiroya Seki, Kensuke Miyajima, and Ryosuke Shimizu
Phys. Rev. A 106, 063716/1-7 (2022).

December 13, 2022

New publication: "Two-photon spectral modulation via temporal manipulation: Quantum optical synthesis of spectral modes from temporal square waves," Rui-Bo Jin, Hiroki Oshima, Takumi Yagisawa, Masahiro Yabuno, Shigehito Miki, Fumihiro China, Hirotaka Terai, and Ryosuke Shimizu
Appl. Phys. Lett. 121, 244002/1-8 (2022).

February 2, 2022

New publication: "Ultrafast measurement of a single-photon wave packet using an optical Kerr gate," Masahiro Yabuno, Takahiro Takumi, Fumihiro China, Shigehito Miki, Hirotaka Terai, Peter J. Mosley, Rui-Bo Jin, and Ryosuke Shimizu
Opt. Express 30, 4999-5007 (2022).

August 2, 2021

New publication: "Quantum optical synthesis in 2D time?frequency spaces," Rui-Bo Jin, Kurumi Tazawa, Naoto Asamura, Masahiro Yabuno, Shigehito Miki, Fumihiro China, Hirotaka Terai, Kaoru Minoshima, and Ryosuke Shimizu
APL Photonics 6, 086104/1-7 (2021).

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.