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Quantum Thermodynamics
Superradiant phase transitions with three-level systems
arXiv
Authors: Alexandre Baksic, Pierre Nataf, Cristiano Ciuti
Year
2012
Paper ID
8591
Status
Preprint
Abstract Read
~2 min
Abstract Words
88
Citations
N/A
Abstract
We determine the phase diagram of N identical three-level systems interacting with a single photonic mode in the thermodynamical limit $N → infty$ by accounting for the so-called diamagnetic term and the inequalities imposed by the Thomas-Reich-Kuhn (TRK) oscillator strength sum rule. The key role of transitions between excited levels and the occurrence of first-order phase transitions is discussed. We show that, in contrast to two-level systems, in the three-level case the TRK inequalities do not always prevent a superradiant phase transition in presence of a diamagnetic term.
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- We determine the phase diagram of N identical three-level systems interacting with a single photonic mode in the thermodynamical limit N -> infty by accounting for the...
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