TEM10 homodyne detection as an optimal small displacement and tilt measurements scheme

Details TEM10 homodyne detection as an optimal small displacement and tilt measurements scheme TEM10 homodyne detection as an optimal small displacement and tilt measurements scheme

2006-07-20

arxiv.org/abs/quant-ph/0607142v1

Physics

Quantum Physics

9 pages, 8 figures

Scientific paper

10.1103/PhysRevA.74.053823

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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