STATE MEASUREMENTS WITH SHORT LASER-PULSES AND LOWER-EFFICIENCY PHOTON DETECTORS

Authors
BEIGE A HEGERFELDT GC
Citation
A. Beige et Gc. Hegerfeldt, STATE MEASUREMENTS WITH SHORT LASER-PULSES AND LOWER-EFFICIENCY PHOTON DETECTORS, J. mod. opt., 44(2), 1997, pp. 345-357
Citations number
28
Categorie Soggetti
Optics
Journal title
J. mod. opt. → ACNP
ISSN journal
09500340
Volume
44
Issue
2
Year of publication
1997
Pages
345 - 357
Database
ISI
SICI code
0950-0340(1997)44:2<345:SMWSLA>2.0.ZU;2-V
Abstract
The use of a short probe laser pulse for state measurements of two-lev el systems has been proposed by Cook. In previous work we have investi gated to what extent this proposal fulfills the projection postulate i f ideal photon detectors are considered. For detectors with an overall efficiency of less than 1 complications arise for single systems, and for this case we present a simple criterion for a laser pulse to act as a state measurement and to cause an almost complete state reduction .