Circuit configurations which may or may not show superradiant phase transitions

Motoaki Bamba and Nobuyuki Imoto
Phys. Rev. A 96, 053857 – Published 27 November 2017

Abstract

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 resonator or a transmission line, we confirm the absence of SRPTs in the thermal equilibrium following the similar analysis as the no-go theorem for atomic systems. We also show some other configurations where the absence of SRPTs cannot be confirmed.

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  • Received 9 March 2017

DOI:https://doi.org/10.1103/PhysRevA.96.053857

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Motoaki Bamba1,2,* and Nobuyuki Imoto1

  • 1Department of Materials Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
  • 2PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan

  • *bamba@qi.mp.es.osaka-u.ac.jp

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Issue

Vol. 96, Iss. 5 — November 2017

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