35 citations · 89 across the 8 of their papers we have counts for
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Possibility to enhance teraherz emission from intrinsic Josephson junction by external local heating
Hidehiro Asai, Shiro Kawabata
We theoretically propose a practical method for realizing intense terahertz (THz) emission from intrinsic Josephson junctions (IJJs) using an external heat source. An artificial in…
Two-dimensional macroscopic quantum tunneling in multi-gap superconductor Josephson junctions
Hidehiro Asai, Shiro Kawabata, Yukihiro Ota +1
Low-temperature characters of superconducting devices yield definite probes for different superconducting phenomena. We study the macroscopic quantum tunneling (MQT) in a Josephson…
Effects of lasing in a one-dimensional quantum metamaterial
Hidehiro Asai, Sergey Savel'ev, Shiro Kawabata +1
Electromagnetic pulse propagation in a quantum metamaterial - artificial, globally quantum coherent optical medium - is numerically simulated. We show that for the quantum metamate…
Theory of macroscopic quantum tunneling with Josephson-Leggett collective excitations in multi-band superconducting Josephson junctions
Hidehiro Asai, Yukihiro Ota, Shiro Kawabata +2
Collective excitations reveal fundamental properties and potential applications of superconducting states. We theoretically study macroscopic quantum tunneling (MQT) in a Josephson…
Intense terahertz emission from intrinsic Josephson junctions by external heat control
Hidehiro Asai, Shiro Kawabata
A practical method for realizing intense terahertz (THz) emission from intrinsic Josephson junctions (IJJs) by utilizing external local-heating is proposed and demonstrated theoret…