Single Atom Cooling by Superfluid Immersion: A Non-Destructive Method for Qubits

Details Single Atom Cooling by Superfluid Immersion: A Non-Destructive Method for Qubits Single Atom Cooling by Superfluid Immersion: A Non-Destructive Method for Qubits

2003-08-25

arxiv.org/abs/quant-ph/0308129v1

Phys. Rev. A 69, 022306 (2004)

Physics

Quantum Physics

14 pages, 9 figures, RevTeX 4

Scientific paper

10.1103/PhysRevA.69.022306

We present a scheme to cool the motional state of neutral atoms confined in sites of an optical lattice by immersing the system in a superfluid. The motion of the atoms is damped by the generation of excitations in the superfluid, and under appropriate conditions the internal state of the atom remains unchanged. This scheme can thus be used to cool atoms used to encode a series of entangled qubits non-destructively. Within realisable parameter ranges, the rate of cooling to the ground state is found to be sufficiently large to be useful in experiments.

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