Phys. Rev. Lett. 92, 037901 (2004) [4 pages]Spin Readout and Initialization in a Semiconductor Quantum DotReceived 17 April 2003; published 20 January 2004 Electron spin qubits in semiconductors are attractive from the viewpoint of long coherence times. However, single spin measurement is challenging. Several promising schemes incorporate ancillary tunnel couplings that may provide unwanted channels for decoherence. Here, we propose a novel spin-charge transduction scheme, converting spin information to orbital information within a single quantum dot by microwave excitation. The same quantum dot can be used for rapid initialization, gating, and readout. We present detailed modeling of such a device in silicon to confirm its feasibility. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.037901
DOI:
10.1103/PhysRevLett.92.037901
PACS:
03.67.Pp, 03.67.Lx, 85.35.Be, 73.21.La
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