K. Koshino, T. Shitara, Z. Ao, K. Semba . Deterministic three-photon down-conversion by a passive ultrastrong cavity-QED system Physical Review Research. 2022.01; 4 013013-1-013013-11. ( DOI )

Kazuki Koshino . Elliptical rotation of a bosonic oscillator in ultrastrong waveguide QED Physical Review Research. 2021.04; 3 023060. ( DOI )

Shumpei Masuda, Kazuki Koshino. Effects of higher levels of qubits on control of qubit protected by a Josephson quantum filter New Journal of Physics. 2021.01; 23 (1): 013006. ( DOI )

S. Kono, K. Koshino, D. Lachance-Quirion, A. F. van Loo, Y. Tabuchi, A. Noguchi, and Y. Nakamura. Breaking the trade-off between fast control and long lifetime of a superconducting qubit Nature Communications. 2020.07; 11 3683.

Ilves J., Kono S., Sunada Y., Yamazaki S., Kim M., Koshino K., Nakamura Y.. On-demand generation and characterization of a microwave time-bin qubit NPJ QUANTUM INFORMATION. 2020.04; 6 (1): ( DOI )

Koshino Kazuki, Kono Shingo, Nakamura Yasunobu. Protection of a Qubit via Subradiance: A Josephson Quantum Filter PHYSICAL REVIEW APPLIED. 2020.01; 13 (1): ( DOI )

Masuda Shumpei, Kono Shingo, Suzuki Keishi, Tokunaga Yuuki, Nakamura Yasunobu, Koshino Kazuki. Nonreciprocal microwave transmission based on Gebhard-Ruckenstein hopping PHYSICAL REVIEW A. 2019.01; 99 (1): ( DOI )

F. Yoshihara, T. Fuse, Z. Ao, S. Ashhab, K. Kakuyanagi, S. Saito, T. Aoki, K. Koshino, and K. Semba. Inversion of Qubit Energy Levels in Qubit-Oscillator Circuits in the Deep-Strong-Coupling Regime Physical Review Letters. 2018.05;

Shingo Kono, Kazuki Koshino, Yutaka Tabuchi, Atsushi Noguchi, Yasunobu Nakamura. Quantum non-demolition detection of an itinerant microwave photon Nature Physics . 2018.03;

S. Kono, Y. Masuyama, T. Ishikawa, Y. Tabuchi, R. Yamazaki, K. Usami, K. Koshino, and Y. Nakamura. Nonclassical Photon Number Distribution in a Superconducting Cavity under a Squeezed Drive Physical Review Letters. 2017.07;

Kono S., Masuyama Y., Ishikawa T., Tabuchi Y., Yamazaki R., Usami K., Koshino K., Nakamura Y.. Nonclassical Photon Number Distribution in a Superconducting Cavity under a Squeezed Drive PHYSICAL REVIEW LETTERS. 2017.07; 119 (2): 023602. ( PubMed, DOI )

K. Koshino, K. Inomata, Z. R. Lin, Y. Tokunaga, T. Yamamoto, and Y. Nakamura. Theory of Deterministic Entanglement Generation between Remote Superconducting Atoms Physical Review Applied. 2017.06;

Koshino K., Inomata K., Lin Z. R., Tokunaga Y., Yamamoto T., Nakamura Y.. Theory of Deterministic Entanglement Generation between Remote Superconducting Atoms PHYSICAL REVIEW APPLIED. 2017.06; 7 (6): ( DOI )

Kazuki Koshino, Satoshi Ishizaka, and Yasunobu Nakamura. Deterministic photon-photon (SWAP)^{1/2} gate using a Lambda system. Physical Review A. 2010; 82 010301(R). ( DOI )

K. Koshino and A. Shimizu. Quantum Zeno effect by general measurements. Physics Reports. 2005; 412 191.

越野和樹，猪股邦弘. Demonstration of deterministic SWAP gate between superconducting and frequency-encoded microwave-photon qubits. ムーンショット目標6内部全体会議 2023.03.29 ベルサール秋葉原

Kazuki Koshino. Demonstration of SWAP gate between superconducting and microwave-photon qubits. Research Workshop on Superconductivity and Quantum Technology 2023.03.14 シーサイドホテル舞子ビラ神戸

Tomohiro Shitara and Kazuki Koshino. Coupling-type-dependent selection rule in the deep strong-coupling regime. APS March Meeting 2023 2023.03.09 Las Vegas Convention Center, Las Vegas, Nevada, USA

Kazuki Koshino and Kunihiro Inomata. Demonstration of SWAP gate between superconducting and microwave-photon qubits. APS March Meeting 2023 2023.03.06 Las Vegas Convention Center, Las Vegas, Nevada, USA

Rui Asaoka, Julio Gea-Banacloche, Yuuki Tokunaga, and Kazuki Koshino. Stimulated emission from superradiant atoms in waveguide QED. CLEO 2022 2022.05.17 San Jose McEnery Convention Center, San Jose, California, USA

Ivan Iakoupov and Kazuki Koshino. Saturable Purcell filter for circuit QED. APS March Meeting 2022 2022.03.15 online

Tomohiro Shitara, Kazuki Koshino. Coupling-type-dependent selection rule in the deep-strong-coupling regime. ISNTT 2021 2021.12.16 online

Z. Ao, F. Yoshihara, T. Fuse, T. Aoki, K. Koshino, K. Semba. Parameter Analysis towards to Deterministic Photon Down-conversion in Ultra-strong Coupling Regime. ISNTT 2021 2021.12.16 online

R. Asaoka, Y. Tokunaga, J. Gea-Banacloche, and K. Koshino. Stimulated emission of superradiant atoms in waveguide QED. ISNTT 2021 2021.12.15 online

Ivan Iakoupov and Kazuki Koshino. Saturable Purcell filter for circuit QED. ISNTT 2021 2021.12.15 online

K. Koshino, K. Semba. Theory of deterministic three-photon down-conversion in ultrastrong cavity QED. APS March Meeting 2021 2021.03.15

K. Koshino, S. Kono, Y. Tabuchi, A. Noguchi, D. Lachance-Quirion, Y. Nakamura. Theory of Josephson Quantum Filter. SQ20th 2019.05.13 Tsukuba International Congress Center

Z. Ao, F. Yoshihara, T. Fuse, S. Kim, S. Ashhab, K. Kakuyanagi, S. Saito, T. Shitara, K. Koshino, T. Aoki, K. Semba. Observation of forbidden transitions using coupled superconducting flux qubit-coplanar waveguide resonator circuit in ultra-strong coupling regime. SQ20th 2019.05.13 Tsukuba International Congress Center

S. Kagami, T. Yamaji, T. Sato, H. Goto, K. Koshino, Z. Lin, Y. Nakamura, and T. Yamamoto. Dynamics of Josephson Parametric Oscillator with Large Kerr Nonlinearity. SQ20th 2019.05.13 Tsukuba International Congress Center

Z. Lin, S. Masuda, K. Inomata, K. Koshino, T. Yamamoto, Y. Nakamura. Real-time detection of an itinerant microwave photon using dressed-state engineering. SQ20th 2019.05.13 Tsukuba International Congress Center

T. Shitara, M. Bamba, F. Yoshihara, T. Fuse, K. Semba, and K. Koshino. Ground state of a circuit QED system in the deep-strong coupling regime coupled to an environment. SQ20th 2019.05.13 Tsukuba International Congress Center

S. Masuda and K. Koshino. Theoretical study of on-chip single microwave photon source based on adiabatic population transfer and shortcuts to adiabaticity. SQ20th 2019.05.13 Tsukuba International Congress Center

S. Kono, K. Koshino, Y. Tabuchi, A. Noguchi, D. Lachance-Quirion, Y. Nakamura. Breaking the trade-off between gate and relaxation times of a superconducting qubit with a Josephson quantum filter: Experiment. SQ20th 2019.05.13 Tsukuba International Congress Center

Kazuki Koshino, Shingo Kono, Yutaka Tabuchi, Atsushi Noguchi, Dany Lachance-Quirion, Yasunobu Nakamura. Breaking the trade-off between gate and relaxation times of a superconducting qubit with a Josephson quantum filter: Theory. APS March Meeting 2019 2019.03.04 Boston, Massachusetts, USA

Shumpei Masuda, Shingo Kono, Keishi Suzuki, Yuuki Tokunaga, Yasunobu Nakamura, Kazuki Koshino. Theoretical study of nonreciprocal microwave transmission based on Gebhard-Ruckenstein hopping. APS March Meeting 2019 2019.03.04 Boston, Massachusetts, USA

Jesper Ilves, Shota Yamazaki, Shingo Kono, Yoshiki Sunada, Minkyu Kim, Kazuki Koshino, Yasunobu Nakamura. Generation of a microwave time-bin qubit with a superconducting qubit. APS March Meeting 2019 2019.03.04 Boston, Massachusetts, USA

Zhirong Lin, Shumpei Masuda, Kunihiro Inomata, Kazuki Koshino, Tsuyoshi Yamamoto, Yasunobu Nakamura. Real-time detection of an itinerant microwave photon using dressed-state engineering. APS March Meeting 2019 2019.03.04 Boston, Massachusetts, USA

Shingo Kono, Kazuki Koshino, Yutaka Tabuchi, Atsushi Noguchi, Dany Lachance-Quirion, Yasunobu Nakamura. Breaking the trade-off between gate and relaxation times of a superconducting qubit with a Josephson quantum filter: Experiment. APS March Meeting 2019 2019.03.04 Boston, Massachusetts, USA