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arXiv:cond-mat/0305494 · Applied Physics Letters

A turnstile electron-spin entangler in semiconductors

Claudia Sifel, Ulrich Hohenester

Published Jul 3, 2003• 3 citations
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Abstract

We propose a single-electron doped quantum dot in a field-effect structure as an optically triggered turnstile for spin-entangled electrons. A short laser pulse excites a charged exciton, whose quantum properties are transferred through tunneling and relaxation to the spin entanglement between electrons in the dot and contact. We identify the pertinent disentanglement mechanisms, and discuss experimental detection and possible application schemes.

DOI
10.1063/1.1590425

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