Single electron-spin memory with a semiconductor quantum dot
| Autor: | Young, Robert J., Dewhurst, Samuel J., Stevenson, R. Mark, Atkinson, Paola, Bennett, Anthony J., Ward, Martin B., Cooper, Ken, Ritchie, David A., Shields, Andrew J. |
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| Rok vydání: | 2007 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1367-2630/9/10/365 |
| Popis: | We show storage of the circular polarisation of an optical field, transferring it to the spin-state of an individual electron confined in a single semiconductor quantum dot. The state is subsequently readout through the electronically-triggered emission of a single photon. The emitted photon shares the same polarisation as the initial pulse but has a different energy, making the transfer of quantum information between different physical systems possible. With an applied magnetic field of 2 Tesla, spin memory is preserved for at least 1000 times more than the exciton's radiative lifetime. Comment: 7 pages, 4 figures |
| Databáze: | arXiv |
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