Solid-state circuit for spin entanglement generation and purification

Details Solid-state circuit for spin entanglement generation and purification Solid-state circuit for spin entanglement generation and purification

2005-03-10

arxiv.org/abs/cond-mat/0503255v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures; corrected minor typos

Scientific paper

10.1103/PhysRevLett.94.236803

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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