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A turnstile electron-spin entangler in semiconductors

By Claudia Sifel and Ulrich Hohenester


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.Comment: 3 pages, 1 figure; to appear in Appl. Phys. Let

Topics: Condensed Matter - Mesoscale and Nanoscale Physics, Quantum Physics
Publisher: 'AIP Publishing'
Year: 2003
DOI identifier: 10.1063/1.1590425
OAI identifier:

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