Prance, J. R. and Shi, Zhan and Simmons, C. B. and Savage, D. E. and Lagally, M. G. and Schreiber, L. R. and Vandersypen, L. M. K. and Friesen, Mark and Joynt, Robert and Coppersmith, S. N. and Eriksson, M. A. (2012) Single-Shot Measurement of Triplet-Singlet Relaxation in a Si/SiGe Double Quantum Dot. Physical review letters, 108 (4). -. ISSN 0031-9007Full text not available from this repository.
We investigate the lifetime of two-electron spin states in a few-electron Si/SiGe double dot. At the transition between the (1,1) and (0,2) charge occupations, Pauli spin blockade provides a readout mechanism for the spin state. We use the statistics of repeated single-shot measurements to extract the lifetimes of multiple states simultaneously. When the magnetic field is zero, we find that all three triplet states have equal lifetimes, as expected, and this time is similar to 10 ms. When the field is nonzero, the T-0 lifetime is unchanged, whereas the T_ lifetime increases monotonically with the field, reaching 3 sec at 1 T.
|Journal or Publication Title:||Physical review letters|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited On:||26 Oct 2012 14:48|
|Last Modified:||24 Jul 2015 01:16|
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