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Emergence of spatially extended pair coherence through incoherent local environmental coupling
Journal article

Emergence of spatially extended pair coherence through incoherent local environmental coupling

Jean-Sebastien Bernier, Peter Barmettler, Dario Poletti and Corinna Kollath
Physical review. A, Atomic, molecular, and optical physics, Vol.87(6), 063608
10/06/2013

Abstract

Optics Physical Sciences Physics Physics, Atomic, Molecular & Chemical Science & Technology
We demonstrate that quantum coherence can be generated by the interplay of coupling to an incoherent environment and kinetic processes. This joint effect even occurs in a repulsively interacting fermionic system initially prepared in an incoherent Mott insulating state. In this case, coupling a dissipative noise field to the local spin density produces coherent pairs of fermions. The generated pair coherence, while metastable, is long lived and spatially extended. This conceptually surprising approach provides a path towards a better control of quantum many-body correlations.

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