UNIGE document Scientific Article
previous document  unige:4175  next document
add to browser collection

Continuous quantum measurement with independent detector cross correlations

Jordan, Andrew N.
Published in Physical Review Letters. 2005, vol. 95, no. 220401, p. 4
Abstract We investigate the advantages of using two independent, linear detectors for continuous quantum measurement. For single-shot quantum measurement, the measurement is maximally efficient if the detectors are twins. For weak continuous measurement, cross-correlations allow a violation of the Korotkov-Averin bound for the detector's signal-to-noise ratio. A vanishing noise background provides a nontrivial test of ideal independent quantum detectors. We further investigate the correlations of non-commuting operators, and consider possible deviations from the independent detector model for mesoscopic conductors coupled by the screened Coulomb interaction.
Keywords Cross correlations
Full text
(ISO format)
JORDAN, Andrew N., BUTTIKER, Markus. Continuous quantum measurement with independent detector cross correlations. In: Physical Review Letters, 2005, vol. 95, n° 220401, p. 4. https://archive-ouverte.unige.ch/unige:4175

200 hits



Deposited on : 2009-11-30

Export document
Format :
Citation style :