Quantum annealing with ultracold atoms in a multimode optical resonator
arXiv:1609.06250 · doi:10.1103/PhysRevA.95.032310
Abstract
A dilutely filled -site optical lattice near zero temperature within a high- multimode cavity can be mapped to a spin ensemble with tailorable interactions at all length scales. The effective full site to site interaction matrix can be dynamically controlled by the application of up to laser beams of suitable geometry, frequency and power, which allows for the implementation of quantum annealing dynamics relying on the all-to-all effective spin coupling controllable in real time. Via an adiabatic sweep starting from a superfluid initial state one can find the lowest energy stationary state of this system. As the cavity modes are lossy, errors can be amended and the ground state can still be reached even from a finite temperature state via ground state cavity cooling. The physical properties of the final atomic state can be directly and almost non-destructively read off from the cavity output fields. As example we simulate a quantum Hopfield associative memory scheme.
arXiv comment11 pages, 7 figures; extended paper: added figures, further explanations and appendices
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