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Wang, K; Payette, C; Dovzhenko, Y; Deelman, P W; Petta, J R
Physical review letters, 07/2013, Letnik: 111, Številka: 4Journal Article
We measure the interdot charge relaxation time T1 of a single electron trapped in an accumulation mode Si/SiGe double quantum dot. The energy level structure of the charge qubit is determined using photon assisted tunneling, which reveals the presence of a low-lying excited state. We systematically measure T1 as a function of detuning and interdot tunnel coupling and show that it is tunable over four orders of magnitude, with a maximum of 45 μs for our device configuration.
