Ph.D. in Science, JST PRESTO, Kyoto University
M. Bamba, X. Li, and J. Kono
Terahertz Strong-Field Physics without a Strong External Terahertz Field
Proceedings of SPIE conference program on Ultrafast Phenomena and Nanophotonics XXIII
arXiv:1901.06749 [cond-mat.mes-hall]
M. Bamba, X. Li, and J. Kono
Vacuum Bloch-Siegert Shift in Cyclotron Resonance
IRMMW-THz2018, International Conference on Infrared, Millimeter, and Terahertz Waves
9-14 Sep 2018 (Nagoya Congress Center, Nagoya, Japan), Th-A2-1a-1
Observation of Dicke Cooperativity in Magnetic Interactions Cooperative quantum magnetism One of the earliest and most intensively studied problems in quantum optics is the interaction of a two-level system (an atom) with a single photon. This simple system provides a rich platform for exploring exotic light-matter interactions and the em…
Read more
Continuous transition between weak and ultra-strong coupling through exceptional points in carbon nanotube micro-cavity exciton polaritons Non-perturbative coupling of photons and excitons produces hybrid particles, exciton–polaritons, which have exhibited a variety of many-body phenomena in various microcavity systems. However, the vacuu…
Read more
Vacuum Bloch-Siegert shift in Landau polaritons with ultra-high cooperativity A two-level system resonantly interacting with an a.c. magnetic or electric field constitutes the physical basis of diverse phenomena and technologies. However, Schrödinger’s equation for this seemingly simple system can be solved exactly only under the rotating…
Read more
Circuit configurations which may or may not show superradiant phase transitions Several superconducting circuit configurations are examined on the existence of superradiant phase transitions (SRPTs) in thermal equilibrium. For some configurations consisting of artificial atoms, whose circuit diagrams are however not specified, and an LC r…
Read more
Superradiant Phase Transition in a Superconducting Circuit in Thermal Equilibrium We propose a superconducting circuit that shows a superradiant phase transition (SRPT) in thermal equilibrium. The existence of the SRPT is confirmed analytically in the limit of an infinite number of artificial atoms. We also perform a numerical diagonaliza…
Read more