Experimental realization of quantum nondemolition measurement by series-coupled light emitter diodes

Authors
Zhang, JX Zhang, TC van Effenterre, D Xie, CD Peng, KC
Citation
Jx. Zhang et al., Experimental realization of quantum nondemolition measurement by series-coupled light emitter diodes, ACT PHY C E, 49(2), 2000, pp. 226-230
Citations number
18
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA SINICA
ISSN journal
10003290 → ACNP
Volume
49
Issue
2
Year of publication
2000
Pages
226 - 230
Database
ISI
SICI code
1000-3290(200002)49:2<226:EROQNM>2.0.ZU;2-S
Abstract
By means of series-amplified of two Light emilter diodes and face-to-face c oupling with high efficiency photodetectors, we demonstrated the quantum no ndemolition measurement of modulated optical signal at room temperature for the first time to our knowledge. The quantum transfer coefficient of T = T -s + T-m = 1.8 and conditional variance of V-s/m = 0.92 have been experimen tally obtained.