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arxiv: 1007.3420 · v2 · pith:AL36DVLPnew · submitted 2010-07-20 · ❄️ cond-mat.quant-gas · cond-mat.str-el

Dissipation-induced d-Wave Pairing of Fermionic Atoms in an Optical Lattice

classification ❄️ cond-mat.quant-gas cond-mat.str-el
keywords pairingatomsd-wavedissipativedynamicslatticestateabsence
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We show how dissipative dynamics can give rise to pairing for two-component fermions on a lattice. In particular, we construct a "parent" Liouvillian operator so that a BCS-type state of a given symmetry, e.g. a d-wave state, is reached for arbitrary initial states in the absence of conservative forces. The system-bath couplings describe single-particle, number conserving and quasi-local processes. The pairing mechanism crucially relies on Fermi statistics. We show how such Liouvillians can be realized via reservoir engineering with cold atoms representing a driven dissipative dynamics.

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