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Solid-state circuit for spin entanglement generation and purification

J. M. Taylor·W. Dür·P. Zoller·A. Yacoby·C. M. Marcus·M. D. Lukin
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Abstract

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 entangled states in electrically controlled semiconductor quantum dots. The generated states are immunized to the dominant sources of noise via a dynamical decoherence-free subspace; all additional errors are corrected by a purification protocol. This approach may find application in quantum computation, communication, and metrology.

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J. M. Taylor, W. Dür, P. Zoller, A. Yacoby, C. M. Marcus, M. D. Lukin. 2005-03-24. Solid-state circuit for spin entanglement generation and purification. https://doi.org/10.1103/physrevlett.94.236803

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