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arXiv · 1809.09737

Finite-size scaling of the photon-blockade breakdown dissipative quantum phase transition

A. Vukics·A. Dombi·J. M. Fink·P. Domokos
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Abstract

We prove that the observable telegraph signal accompanying the bistability in the photon-blockade-breakdown regime of the driven and lossy Jaynes--Cummings model is the finite-size precursor of what in the thermodynamic limit is a genuine first-order phase transition. We construct a finite-size scaling of the system parameters to a well-defined thermodynamic limit, in which the system remains the same microscopic system, but the telegraph signal becomes macroscopic both in its timescale and intensity. The existence of such a finite-size scaling completes and justifies the classification of the photon-blockade-breakdown effect as a first-order dissipative quantum phase transition.

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A. Vukics, A. Dombi, J. M. Fink, P. Domokos. 2019-05-27. Finite-size scaling of the photon-blockade breakdown dissipative quantum phase transition. https://doi.org/10.22331/q-2019-06-03-150

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