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Dephasing of quantum bits by a quasi-static mesoscopic environment
J. M. Taylor, M. D. Lukin
We examine coherent processes in a two-state quantum system that is strongly coupled to a mesoscopic spin bath and weakly coupled to other environmental degrees of freedom. Our ana…
Quantum Optics with Surface Plasmons
D. E. Chang, A. S. Sorensen, P. R. Hemmer +1
We describe a technique that enables strong, coherent coupling between individual optical emitters and guided plasmon excitations in conducting nano-structures at optical frequenci…
Decay of super-currents in condensates in optical lattices
A. Polkovnikov, E. Altman, E. Demler +2
In this paper we discuss decay of superfluid currents in boson lattice systems due to quantum tunneling and thermal activation mechanisms. We derive asymptotic expressions for the…
Solid-state circuit for spin entanglement generation and purification
J. M. Taylor, W. Dür, P. Zoller +3
We show how realistic charge manipulation and measurement techniques, combined with the exchange interaction, allow for the robust generation and purification of four-particle spin…