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 |
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Journal | Physical Review A |
Volume | 74 |
Issue number | 5 |
Pages (from-to) | 053823 |
ISSN | 2469-9926 |
DOIs | |
Publication status | Published - 2006 |
Bibliographical note
Copyright 2006 American Physical SocietyKeywords
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