Experimental Observation of a Time-Driven Phase Transition in Quantum Chaos - Archive ouverte HAL
Article Dans Une Revue Physical Review Letters Année : 2018

Experimental Observation of a Time-Driven Phase Transition in Quantum Chaos

Résumé

We report the first experimental observation of the time-driven phase transition in a canonical quantum chaotic system, the quantum kicked rotor. The transition bears a firm analogy to a thermodynamic phase transition, with the time mimicking the temperature and the quantum expectation of the rotor’s kinetic energy mimicking the free energy. The transition signals a sudden change in the system’s memory behavior: before the critical time, the system undergoes chaotic motion in phase space and its memory of initial states is erased in the course of time; after the critical time, quantum interference enhances the probability for a chaotic trajectory to return to the initial state, and thus the system’s memory is recovered.
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Dates et versions

hal-01744050 , version 1 (18-03-2024)

Identifiants

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Clément Hainaut, Ping Fang, Adam Rançon, Jean-François Clément, Pascal Szriftgiser, et al.. Experimental Observation of a Time-Driven Phase Transition in Quantum Chaos. Physical Review Letters, 2018, 121 (13), pp.134101. ⟨10.1103/PhysRevLett.121.134101⟩. ⟨hal-01744050⟩
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