Dissipation-Induced d -Wave Pairing of Fermionic Atoms in an Optical Lattice
Sebastian Diehl, Wei Yi, Andrew J. Daley +1 more
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 quasilocal 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.
arXiv:1007.3420•Physical Review Letters•Nov 22, 2010•84 citations