2003/05/21 by Claudia Sifel, Ulrich Hohenester · 1 citation
Computer Science · Physics and Astronomy · #Quantum and electron transport phenomena #Quantum-Dot Cellular Automata #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1063/1.1590425
3 pages, 1 figure; to appear in Appl. Phys. Lett
arxiv created 2003/05/21 · openalex publication_date 2003/07/03 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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.