Effect of exchange interaction on spin dephasing in a double quantum dot.
We measure singlet-triplet dephasing in a two-electron double quantum dot in the presence of an exchange interaction which can be electrically tuned from much smaller to much larger than the hyperfine energy. Saturation of dephasing and damped oscillations of the spin correlator as a function of tim...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2006
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| _version_ | 1826275656621621248 |
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| author | Laird, E Petta, JR Johnson, A Marcus, C Yacoby, A Hanson, M Gossard, A |
| author_facet | Laird, E Petta, JR Johnson, A Marcus, C Yacoby, A Hanson, M Gossard, A |
| author_sort | Laird, E |
| collection | OXFORD |
| description | We measure singlet-triplet dephasing in a two-electron double quantum dot in the presence of an exchange interaction which can be electrically tuned from much smaller to much larger than the hyperfine energy. Saturation of dephasing and damped oscillations of the spin correlator as a function of time are observed when the two interaction strengths are comparable. Both features of the data are compared with predictions from a quasistatic model of the hyperfine field. |
| first_indexed | 2024-03-06T23:02:06Z |
| format | Journal article |
| id | oxford-uuid:627cdffc-807a-4426-a402-55359e1e2f19 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:02:06Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:627cdffc-807a-4426-a402-55359e1e2f192022-03-26T18:06:34ZEffect of exchange interaction on spin dephasing in a double quantum dot.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:627cdffc-807a-4426-a402-55359e1e2f19EnglishSymplectic Elements at Oxford2006Laird, EPetta, JRJohnson, AMarcus, CYacoby, AHanson, MGossard, AWe measure singlet-triplet dephasing in a two-electron double quantum dot in the presence of an exchange interaction which can be electrically tuned from much smaller to much larger than the hyperfine energy. Saturation of dephasing and damped oscillations of the spin correlator as a function of time are observed when the two interaction strengths are comparable. Both features of the data are compared with predictions from a quasistatic model of the hyperfine field. |
| spellingShingle | Laird, E Petta, JR Johnson, A Marcus, C Yacoby, A Hanson, M Gossard, A Effect of exchange interaction on spin dephasing in a double quantum dot. |
| title | Effect of exchange interaction on spin dephasing in a double quantum dot. |
| title_full | Effect of exchange interaction on spin dephasing in a double quantum dot. |
| title_fullStr | Effect of exchange interaction on spin dephasing in a double quantum dot. |
| title_full_unstemmed | Effect of exchange interaction on spin dephasing in a double quantum dot. |
| title_short | Effect of exchange interaction on spin dephasing in a double quantum dot. |
| title_sort | effect of exchange interaction on spin dephasing in a double quantum dot |
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