dorsal/arxiv
View SchemaTerahertz-induced depletion of the ground-state population of neutral donors in GaAs measured by resonant elastic light scattering from donor-bound excitons
| Authors | D. G. Allen, C. R. Stanley, M. S. Sherwin |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0503056 |
| URL | https://arxiv.org/abs/quant-ph/0503056 |
Abstract
Strong resonant elastic light scattering (RELS) from the donor-bound exciton transition in GaAs (1.514eV) occurs at neutral donors in the ground (1S) state, but not at neutral donors in excited hydrogenic states. When 1.6 THz radiation is incident on an ensemble of neutral donors, we observe up to a 30% decrease in the RELS, corresponding to a decrease in the population of neutral donors in their ground states. This optical detection method is similar to quantum nondemolition measurement techniques used for readout of ion trap quantum computers and diamond nitrogen-vacancy centers. In this scheme, Auger recombination of the bound exciton, which changes the state of the donor during measurement, limits the measurement fidelity and maximum NIR excitation intensity.
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"date_created": "2026-03-02T18:02:13.467000Z",
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"abstract": "Strong resonant elastic light scattering (RELS) from the donor-bound exciton\ntransition in GaAs (1.514eV) occurs at neutral donors in the ground (1S) state,\nbut not at neutral donors in excited hydrogenic states. When 1.6 THz radiation\nis incident on an ensemble of neutral donors, we observe up to a 30% decrease\nin the RELS, corresponding to a decrease in the population of neutral donors in\ntheir ground states. This optical detection method is similar to quantum\nnondemolition measurement techniques used for readout of ion trap quantum\ncomputers and diamond nitrogen-vacancy centers. In this scheme, Auger\nrecombination of the bound exciton, which changes the state of the donor during\nmeasurement, limits the measurement fidelity and maximum NIR excitation\nintensity.",
"arxiv_id": "quant-ph/0503056",
"authors": [
"D. G. Allen",
"C. R. Stanley",
"M. S. Sherwin"
],
"categories": [
"quant-ph"
],
"title": "Terahertz-induced depletion of the ground-state population of neutral donors in GaAs measured by resonant elastic light scattering from donor-bound excitons",
"url": "https://arxiv.org/abs/quant-ph/0503056"
},
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