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

doi:10.1103/PhysRevA.74.053823

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

Department of Physics

Research output: Contribution to journal › Journal article › Research › peer-review

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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 language	English
Article number	053823
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	74
Issue number	5
ISSN	1094-1622
DOIs	https://doi.org/10.1103/PhysRevA.74.053823
Publication status	Published - 2006

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LIGHT

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10.1103/PhysRevA.74.053823

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AU - Fabre, Claude

AU - Lam, Ping Koy

AU - Bachor, Hans A.

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AB - 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.

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