期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.046801
关键词
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资金
- NSF through the Princeton Center for Complex Materials [DMR-0819860]
- FQRNT
- DOE BES [DE-AC02-98CH10886]
- United States Department of Defense
- NSF through CAREER Program [DMR-0846341]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0846341] Funding Source: National Science Foundation
We measure the interdot charge relaxation time T-1 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 T-1 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 mu s for our device configuration.
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