10.22331/q-2019-06-03-150
Vukics, A.
A.
Vukics
Dombi, A.
A.
Dombi
Fink, Johannes M
Johannes M
Fink0000-0001-8112-028X
Domokos, P.
P.
Domokos
Finite-size scaling of the photon-blockade breakdown dissipative quantum phase transition
Verein zur FĂ¶rderung des Open Access Publizierens in den Quantenwissenschaften
2019
2020-02-05T09:57:57Z
2020-02-11T09:26:51Z
journal_article
/record/7451
/record/7451.json
2521-327X
1809.09737
5805248 bytes
application/pdf
We prove that the observable telegraph signal accompanying the bistability in the photon-blockade-breakdown regime of the driven and lossy Jaynesâ€“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.