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

V. Delaubert, N. Treps, M. Lassen, C. C. Harb, C. Fabre, P. K. Lam, and H-A. Bachor
Phys. Rev. A 74, 053823 – Published 30 November 2006

Abstract

We present a detailed description of small displacement and tilt measurements of a Gaussian beam using split detectors and TEM10 homodyne detectors. Theoretical analysis and an experimental demonstration of measurements of these two conjugate variables are given. A comparison between the experimental efficiency of each scheme proves that the standard split detection is only 64% efficient relative to the TEM10 homodyne detection, which is optimal for beam displacement and tilt. We also demonstrate experimentally that squeezed light in the appropriate spatial modes allows measurements beyond the quantum noise limit for both types of detectors. Finally, we explain how to choose the detection scheme best adapted to a given application.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 20 July 2006

DOI:https://doi.org/10.1103/PhysRevA.74.053823

©2006 American Physical Society

Authors & Affiliations

V. Delaubert1,2, N. Treps1, M. Lassen2,3, C. C. Harb2, C. Fabre1, P. K. Lam2, and H-A. Bachor2

  • 1Laboratoire Kastler Brossel, 4 Place Jussieu, Case 74, Paris 75252 Cedex 05, France
  • 2ACQAO, The Australian National University, Canberra ACT 0200, Australia
  • 3Department of Physics, Danmarks Tekniske Universitet, Building 309, 2800 Lyngby, Denmark

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 74, Iss. 5 — November 2006

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×