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yancj: ½ð±Ò+5 2014-07-03 10:46:26
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yancj: ½ð±Ò+3 2014-07-02 09:43:55
yancj: ½ð±Ò+2 2014-07-02 09:44:30
yancj: ½ð±Ò+5 2014-07-03 10:46:26
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ÈçÏÂÎÄÕ£¬ËƺõÊǷתÁ˵ġ£ÎÒû¾ßÌå¿´°¡¡£ Dynamics of spin-flip photon-assisted tunneling£¨PHYSICAL REVIEW B 89, 075417 (2014)£© We present time-resolved measurements of spin-flip photon-assisted tunneling and spin-flip relaxation in a doubly occupied double quantum dot. The photon-assisted excitation rate as a function ofmagnetic field indicates that spin-orbit coupling is the dominant mechanism behind the spin-flip under the present conditions. We are able to extract the resulting effective ¡°spin-flip tunneling¡± energy, which is found to be three orders of magnitude smaller than the regular spin-conserving tunneling energy. We also measure the relaxation and dephasing times of a qubit formed out of two two-electron states with different spin and charge configurations. |
3Â¥2014-07-01 21:23:44
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4Â¥2014-07-01 21:30:39
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