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arXiv · 1212.5219

Transfer and storage of qubits in the presence of decoherence

Kelly R. Patton·Uwe R. Fischer
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Abstract

The effects of decoherence on the transfer and storage of coherent quantum states in hybrid systems are studied within the Caldeira-Leggett approach. In general, we find that a high transfer fidelity can be achieved even if the decoherence time is less than an order of magnitude larger than the transfer time, which is approximately half a Rabi period and determined by the qubit-qubit coupling strength. Finally, we apply our results to assess the feasibility of a hybrid quantum memory system, comprised of the hyperfine qubit states of an ultracold atomic Bose-Einstein condensate and the flux qubit of a SQUID.

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Kelly R. Patton, Uwe R. Fischer. 2013-04-23. Transfer and storage of qubits in the presence of decoherence. https://doi.org/10.1209/0295-5075%2F102%2F20001

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