TY - JOUR

T1 - Single-Shot Measurement of Triplet-Singlet Relaxation in a Si/SiGe Double Quantum Dot

AU - Prance, J. R.

AU - Shi, Zhan

AU - Simmons, C. B.

AU - Savage, D. E.

AU - Lagally, M. G.

AU - Schreiber, L. R.

AU - Vandersypen, L. M. K.

AU - Friesen, Mark

AU - Joynt, Robert

AU - Coppersmith, S. N.

AU - Eriksson, M. A.

PY - 2012/1/26

Y1 - 2012/1/26

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84856301914&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.108.046808

DO - 10.1103/PhysRevLett.108.046808

M3 - Journal article

VL - 108

SP - -

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 4

M1 - 046808

ER -