We investigated the quantum phase transitions in a cross-cavity quantum Rabi model which possesses the parity-time symmetric structure. Both the dissipative quantum Rabi phase transition and the spontaneous parity-time symmetry breaking exist simultaneously in such system. The competition between these two phase transitions produces the plentiful phase diagram. We also propose the detection of the dissipative cross-cavity quantum Rabi phase transition through the measurement of the parity-time symmetric or asymmetric states, which shed light on the precise detection of the few-body phase transition.
CITATION STYLE
Wang, N., Gong, Z. R., Lu, J., & Zhou, L. (2019). Phases transitions in a cross-cavity quantum rabi model possessing PT symmetric structure. Frontiers in Physics, 7(SEP). https://doi.org/10.3389/fphy.2019.00127
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