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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper QTuG24

Ultrasensitive measurement with amplitude-squeezed light

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Abstract

Squeezed light provides the opportunity for enhanced sensitivity in spectroscopy and for the measurement of nondassical optical interactions, as shown in recent experiments.1 Because photon-number fluctuations are easily measured by photosensitive devices, methods have been developed to use this information to control the amplitude fluctuations in a laser.2 Significant noise reduction [up to 20 dB (Ref. 3)] below the standard quantum limit (SQL) has been observed in the amplitude fluctuations of light when the photocurrent is fed back to the laser source.

© 1995 Optical Society of America

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