Emergent quantum correlations and collective behavior in non-interacting quantum systems subject to stochastic resetting

• URL: http://arxiv.org/abs/2202.12655v1
• Date: Fri, 25 Feb 2022 12:22:19 GMT
• Title: Emergent quantum correlations and collective behavior in non-interacting quantum systems subject to stochastic resetting
• Authors: Matteo Magoni, Federico Carollo, Gabriele Perfetto, Igor Lesanovsky
• Abstract summary: We investigate the dynamics of a non-interacting spin system undergoing coherent oscillations in the presence of Rabi resetting. We show that resetting generally induces long-range quantum and classical correlations. In the thermodynamic limit, the spin system can feature collective behavior.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate the dynamics of a non-interacting spin system, undergoing coherent Rabi oscillations, in the presence of stochastic resetting. We show that resetting generally induces long-range quantum and classical correlations both in the emergent dissipative dynamics and in the non-equilibrium stationary state. Moreover, for the case of conditional reset protocols -- where the system is reinitialized to a state dependent on the outcome of a preceding measurement -- we show that, in the thermodynamic limit, the spin system can feature collective behavior which results in a phenomenology reminiscent of that occurring in non-equilibrium phase transitions. The discussed reset protocols can be implemented on quantum simulators and quantum devices that permit fast measurement and readout of macroscopic observables, such as the magnetisation. Our approach does not require the control of coherent interactions and may therefore highlight a route towards a simple and robust creation of quantum correlations and collective non-equilibrium states, with potential applications in quantum enhanced metrology and sensing.

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