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arxiv: 1312.2963 · v2 · pith:VCD5OCS2new · submitted 2013-12-10 · 🪐 quant-ph · cond-mat.mes-hall· cond-mat.quant-gas· cond-mat.supr-con

Observation of a Dissipation-Induced Classical to Quantum Transition

classification 🪐 quant-ph cond-mat.mes-hallcond-mat.quant-gascond-mat.supr-con
keywords quantumtransitionclassicalobservationsystemcircuitclasscoherent
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We report here the experimental observation of a dynamical quantum phase transition in a strongly interacting open photonic system. The system studied, comprising a Jaynes-Cummings dimer realized on a superconducting circuit platform, exhibits a dissipation driven localization transition. Signatures of the transition in the homodyne signal and photon number reveal this transition to be from a regime of classical oscillations into a macroscopically self-trapped state manifesting revivals, a fundamentally quantum phenomenon. This experiment also demonstrates a small-scale realization of a new class of quantum simulator, whose well controlled coherent and dissipative dynamics is suited to the study of quantum many-body phenomena out of equilibrium.

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