Cooling atoms into entangled states

Details Cooling atoms into entangled states Cooling atoms into entangled states

2009-03-16

arxiv.org/abs/0903.2796v3

New J. Phys. 11, 083008 (2009).

Physics

Quantum Physics

16 pages, 6 figures, typos corrected

Scientific paper

We discuss the possibility of preparing highly entangled states by simply cooling atoms into the ground state of an applied interaction Hamiltonian. As in laser sideband cooling, we take advantage of a relatively large detuning of the desired state, while all other qubit states experience resonant laser driving. Once spontaneous emission from excited atomic states prepares the system in its ground state, it remains there with a very high fidelity for a wide range of experimental parameters and all possible initial states. After presenting the general theory, we discuss concrete applications with one and two qubits.

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