Charge and Spin State Readout of a Double Quantum Dot Coupled to a Resonator
Charge and Spin State Readout of a Double Quantum Dot Coupled to a Resonator
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DOI:
10.1021/nl100663w
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发表时间:
2010-08-01
期刊:
影响因子:
10.8
通讯作者:
Ritchie, D. A.
中科院分区:
文献类型:
--
作者:
Petersson, K. D.;Smith, C. G.;Ritchie, D. A.
State readout is a key requirement for a quantum computer. For semiconductor-based qubit devices it is usually accomplished using a separate mesoscopic electrometer. Here we demonstrate a simple detection scheme in which a radio frequency resonant circuit coupled to a semiconductor double quantum dot is used to probe its charge and spin states. These results demonstrate a new noninvasive technique for measuring charge and spin states in quantum dot systems without requiring a separate mesoscopic detector.