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arXiv · 1605.01124

Super-radiant phase transition in superconducting circuit in thermal equilibrium

Motoaki Bamba·Kunihiro Inomata·Yasunobu Nakamura
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Abstract

We propose a superconducting circuit that shows a super-radiant phase transition (SRPT) in the thermal equilibrium. The existence of the SRPT is confirmed analytically in the limit of an infinite number of artificial atoms. We also perform numerical diagonalization of the Hamiltonian with a finite number of atoms and observe an asymptotic behavior approaching the infinite limit as the number of atoms increases. The SRPT can also be interpreted intuitively in a classical analysis.

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Motoaki Bamba, Kunihiro Inomata, Yasunobu Nakamura. 2016-10-17. Super-radiant phase transition in superconducting circuit in thermal equilibrium. https://doi.org/10.1103/physrevlett.117.173601

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