TEM10 homodyne detection as an optimal small-displacement and tilt-measurement scheme

Vincent Delaubert, Nikolas Treps, Mikael Østergaard Lassen, Charles Harb, Claude Fabre, Ping Koy Lam, Hans A. Bachor

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Abstract

We report an experimental demonstration of optimal measurements of small displacement and tilt of a Gaussian beam - two conjugate variables - involving a homodyne detection with a TEM10 local oscillator. We verify that the standard split detection is only 64% efficient. We also show a displacement measurement beyond the quantum noise limit, using a squeezed vacuum TEM10 mode within the input beam.
Original languageEnglish
JournalPhysical Review A
Volume74
Issue number5
Pages (from-to)053823
ISSN2469-9926
DOIs
Publication statusPublished - 2006

Bibliographical note

Copyright 2006 American Physical Society

Keywords

  • LIGHT

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