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Repeated Quantum Nondemolition Measurements of Continuous Optical Waves

Journal Article · · Physical Review Letters
; ;  [1]
  1. Fakultaet fuer Physik, Universitaet Konstanz, 78457Konstanz (Germany)
Repeated quantum nondemolition (QND) measurements for continuous optical waves were performed by combining a degenerate optical parametric amplifier and a squeezed-light beam splitter. Two-step quantum state preparation and three-beam entanglement of the individually squeezed output beams were demonstrated. The experiment is analyzed using a set of generalized criteria for nonideal individual and repeated QND measurements. The system was operated fully stabilized for up to 36 hours. {copyright} {ital 1997} {ital The American Physical Society}
OSTI ID:
538616
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 79; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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