Stabilizing nuclear spins around semiconductor electrons via the interplay of optical coherent population trapping and dynamic nuclear polarization
| Autor: | Danny O'Shea, Dirk Reuter, A. R. Onur, Andreas D. Wieck, van der Caspar Wal, de Jakko Jong |
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| Přispěvatelé: | Physics of Nanodevices |
| Rok vydání: | 2016 |
| Předmět: |
LOCKING
Population FOS: Physical sciences Electron 7. Clean energy 01 natural sciences 010305 fluids & plasmas law.invention law Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences FIELD 010306 general physics education Physics ENVIRONMENT education.field_of_study Condensed Matter - Mesoscale and Nanoscale Physics Spins Spin polarization QUBIT Polarization (waves) Laser 3. Good health Qubit Atomic physics Coherence (physics) |
| Zdroj: | Physical Review. B: Condensed Matter and Materials Physics, 93(16):161204. AMER PHYSICAL SOC |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.93.161204 |
| Popis: | We experimentally demonstrate how coherent population trapping (CPT) for donor-bound electron spins in GaAs results in autonomous feedback that prepares stabilized states for the spin polarization of nuclei around the electrons. CPT was realized by excitation with two lasers to a bound-exciton state. Transmission studies of the spectral CPT feature on an ensemble of electrons directly reveal the statistical distribution of prepared nuclear spin states. Tuning the laser driving from blue to red detuned drives a transition from one to two stable states. Our results have importance for ongoing research on schemes for dynamic nuclear spin polarization, the central spin problem and control of spin coherence. Comment: 5 pages, 4 figures |
| Databáze: | OpenAIRE |
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