Quantum coherence from commensurate driving with laser pulses and decay

Goetz S. Uhrig

SciPost Phys. 8, 040 (2020) · published 12 March 2020

Abstract

Non-equilibrium physics is a particularly fascinating field of current research. Generically, driven systems are gradually heated up so that quantum effects die out. In contrast, we show that a driven central spin model including controlled dissipation in a highly excited state allows us to distill quantum coherent states, indicated by a substantial reduction of entropy. The model is experimentally accessible in quantum dots or molecules with unpaired electrons. The potential of preparing and manipulating coherent states by designed driving potentials is pointed out.


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Lasers Quantum coherence

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