Spin lifetimes in quantum dots from noise measurements.
We present a method of obtaining information about spin lifetimes in quantum dots from measurements of electrical transport. The dot is under resonant microwave irradiation and at temperatures comparable to or larger than the Zeeman energy. We find that the ratio of the spin coherence times T_{1}/T_...
| Päätekijät: | , , , |
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| Aineistotyyppi: | Journal article |
| Kieli: | English |
| Julkaistu: |
2009
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| _version_ | 1826302801194516480 |
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| author | Wabnig, J Lovett, B Jefferson, J Briggs, G |
| author_facet | Wabnig, J Lovett, B Jefferson, J Briggs, G |
| author_sort | Wabnig, J |
| collection | OXFORD |
| description | We present a method of obtaining information about spin lifetimes in quantum dots from measurements of electrical transport. The dot is under resonant microwave irradiation and at temperatures comparable to or larger than the Zeeman energy. We find that the ratio of the spin coherence times T_{1}/T_{2} can be deduced from a measurement of current through the quantum dot as a function the applied magnetic field. We calculate the noise power spectrum of the dot current and show that a dip occurs at the Rabi frequency with a linewidth given by 1/T_{1}+1/T_{2}. |
| first_indexed | 2024-03-07T05:52:56Z |
| format | Journal article |
| id | oxford-uuid:e983f904-89b9-4942-8a66-ed451217c721 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:52:56Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:e983f904-89b9-4942-8a66-ed451217c7212022-03-27T10:54:56ZSpin lifetimes in quantum dots from noise measurements.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e983f904-89b9-4942-8a66-ed451217c721EnglishSymplectic Elements at Oxford2009Wabnig, JLovett, BJefferson, JBriggs, GWe present a method of obtaining information about spin lifetimes in quantum dots from measurements of electrical transport. The dot is under resonant microwave irradiation and at temperatures comparable to or larger than the Zeeman energy. We find that the ratio of the spin coherence times T_{1}/T_{2} can be deduced from a measurement of current through the quantum dot as a function the applied magnetic field. We calculate the noise power spectrum of the dot current and show that a dip occurs at the Rabi frequency with a linewidth given by 1/T_{1}+1/T_{2}. |
| spellingShingle | Wabnig, J Lovett, B Jefferson, J Briggs, G Spin lifetimes in quantum dots from noise measurements. |
| title | Spin lifetimes in quantum dots from noise measurements. |
| title_full | Spin lifetimes in quantum dots from noise measurements. |
| title_fullStr | Spin lifetimes in quantum dots from noise measurements. |
| title_full_unstemmed | Spin lifetimes in quantum dots from noise measurements. |
| title_short | Spin lifetimes in quantum dots from noise measurements. |
| title_sort | spin lifetimes in quantum dots from noise measurements |
| work_keys_str_mv | AT wabnigj spinlifetimesinquantumdotsfromnoisemeasurements AT lovettb spinlifetimesinquantumdotsfromnoisemeasurements AT jeffersonj spinlifetimesinquantumdotsfromnoisemeasurements AT briggsg spinlifetimesinquantumdotsfromnoisemeasurements |