Kazuhiro Hayasaka

Toyo University — Japan

Physics and Astronomy · Physical Sciences

19h-index2.1kcitations102works0.22yr avg
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Research Topics

Cold Atom Physics and Bose-Einstein Condensates(42), Advanced Frequency and Time Standards(33), Advanced Fiber Laser Technologies(32), Quantum Information and Cryptography(26), Quantum optics and atomic interactions(21)

Publications102 total

Isotope-selective Ion trapping via sympathetic cooling using a surface-electrode trap with a hole for collimated atomic loading
Scientific Reports·2025Open Access
Isotope-selective Ion Trapping via SympatheticCooling using a Surface-Electrode Trap with a Holefor Collimated Atomic Loading
2025Open Access
Isotope-selective Ion Trapping via Sympathetic Cooling using a Surface-Electrode Trap with a Hole for Collimated Atomic Loading
arXiv (Cornell University)·2025Open Access
Multi-stage coherent beam combination of semiconductor optical amplifiers in ready-made fiber couplers
Optics Express·2024· 1 citedOpen Access
Characterization of grating couplers for 40Ca+ based integrated surface ion traps
2024
Frequency Locking and Power Enhancement by Coherent Addition of a Clock Laser for a Portable Multi-<sup>40</sup>Ca<sup>+</sup> Optical Clock
2023
Frequency ratio of an <sup>115</sup>In<sup>+</sup> ion clock and a <sup>87</sup>Sr optical lattice clock
Optics Letters·2020· 20 citedOpen Access
Heralded amplification of nonlocality via entanglement swapping
New Journal of Physics·2019· 15 citedOpen Access
An Optimal Strategy to Recover Nonlocality of Polarization-Entangled State from a SPDC Source via Entanglement Swapping Relay
2019
Extension of the Ion Optical Clock to Multi-Ion Systems
2019
Optical clock based on a sympathetically-cooled indium ion
Hyperfine Interactions·2019· 6 cited
Heralded amplification of nonlocality via entanglement swapping for long-distance device-independent quantum key distribution
arXiv (Cornell University)·2019· 3 citedOpen Access
Optimal conditions for the Bell test using spontaneous parametric down-conversion sources
Physical review. A/Physical review, A·2018· 15 citedOpen Access
Long-Distance Single Photon Transmission from a Trapped Ion via Quantum Frequency Conversion
Physical Review Letters·2018· 78 citedOpen Access
Stability Enhancement of Ion-Based Optical Clocks by Multiple Ions
The Japan Society of Applied Physics·2018
Update of the CIPM recommended frequency of the In + clock transition
The Japan Society of Applied Physics·2018
Updated absolute frequency of the <sup>115</sup>In<sup>+</sup> optical clock transition
2017
Frequency measurement of the clock transition of an indium ion sympathetically-cooled in a linear trap
Optics Express·2017· 20 citedOpen Access
Frequency Measurement System of Optical Clocks Without a Flywheel Oscillator
IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control·2016· 1 cited
Progress toward a new implementation of an In<sup>+</sup>optical clock
2016
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Frequent Co-authors

Shinji Urabe(19), Hidetsuka Imajo(17), Masayoshi Watanabe(17), R. Ohmukai(11), Kensuke Matsubara(9), U. Tanaka(9), Masahiro Takeoka(7), Masahide Sasaki(7), Kentaro Wakui(7), Mizuhiko Hosokawa(6), Hiroki Takahashi(5), Masatoshi Kajita(5), Katsuyuki Kasai(5), T. Ido(5), Yoshiaki Tsujimoto(4), Yun Zhang(4), Ying Li(4), Jonas S. Neergaard-Nielsen(3), Makoto Takeuchi(3), Ying Li(3)