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

ACQAO); Charles C. Harb (ACQAO); Claude Fabre (LKB - Jussieu); Hans A. Bachor (ACQAO); Mikael Lassen (DTU); Nicolas Treps (LKB - Jussieu); Ping Koy Lam (ACQAO); Vincent Delaubert (LKB - Jussieu

arxiv: quant-ph/0607142 · v1 · submitted 2006-07-20 · 🪐 quant-ph

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

Vincent Delaubert (LKB - Jussieu , ACQAO) , Nicolas Treps (LKB - Jussieu) , Mikael Lassen (DTU) , Charles C. Harb (ACQAO) , Claude Fabre (LKB - Jussieu) , Ping Koy Lam (ACQAO) , Hans A. Bachor (ACQAO) This is my paper

classification 🪐 quant-ph

keywords detectiondisplacementtem10beamhomodynemeasurementsoptimalsmall

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

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