Parity measurement of one- and two-electron double well systems

Stace, T. M., Barrett, S. D., Goan, H. S. and Milburn, G. J. (2004) Parity measurement of one- and two-electron double well systems. Physical Review B, 70 20: 205342-1-205342-14. doi:10.1103/PhysRevB.70.205342

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Author Stace, T. M.
Barrett, S. D.
Goan, H. S.
Milburn, G. J.
Title Parity measurement of one- and two-electron double well systems
Journal name Physical Review B   Check publisher's open access policy
ISSN 1098-0121
Publication date 2004-11-29
Year available 2004
Sub-type Article (original research)
DOI 10.1103/PhysRevB.70.205342
Open Access Status File (Publisher version)
Volume 70
Issue 20
Start page 205342-1
End page 205342-14
Total pages 14
Editor P. D. Adams
Place of publication New York
Publisher American Physical Society
Language eng
Subject C1
240203 Condensed Matter Physics - Electronic and Magnetic Properties; Superconductivity
240000 Physical Sciences
Abstract We outline a scheme to accomplish measurements of a solid state double well system (DWS) with both one and two electrons in nonlocalized bases. We show that, for a single particle, measuring the local charge distribution at the midpoint of a DWS using a SET as a sensitive electrometer amounts to performing a projective measurement in the parity (symmetric/antisymmetric) eigenbasis. For two-electrons in a DWS, a similar configuration of SET results in close-to-projective measurement in the singlet/triplet basis. We analyze the sensitivity of the scheme to asymmetry in the SET position for some experimentally relevant parameter, and show that it is experimentally realizable.
Keyword Physics, Condensed Matter
Quantum Dots
Q-Index Code C1

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Citation counts: TR Web of Science Citation Count  Cited 15 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 14 Aug 2007, 00:46:22 EST