2000/04/30 by Rutger Vrijen, Eli Yablonovitch · 4 citations
Computer Science · Physics and Astronomy · #Atomic and Subatomic Physics Research #Quantum Information and Cryptography #Quantum and electron transport phenomena #quant-ph
paper · pdf · doi:10.1016/s1386-9477(00)00296-4
To be published in the proceedings of the 11th International Winterschool on New Developments in Solid State Physics, 21 - 25 February, 2000, Mauterndorf, Austria (Physica E, Sept. 2000). 5 pages, 4 figures Revised with updated work on light-hole/heavy-hole selection rules
arxiv created 2000/12/08 · openalex publication_date 2001/06/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We describe how quantum information may be transferred from photon polarization to electron spin in a semiconductor device. The transfer of quantum information relies on selection rules for optical transitions, such that two superposed photon polarizations excite two superposed spin states. Entanglement of the electron spin state with the spin state of the remaining hole is prevented by using a single, non-degenerate initial valence band. The degeneracy of the valence band is lifted by the combination of strain and a static magnetic field. We give a detailed description of a semiconductor structure that transfers photon polarization to electron spin coherently, and allows electron spins to be stored and to be made available for quantum information processing.