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Multimode single-pass spatio-temporal squeezing
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DOI：10.1364/OE.386528.png)
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Abstract
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We present a single-pass source of broadband multimode squeezed light with potential application in quantum information and quantum metrology. The source is based on a type I parametric down-conversion (PDC) process inside a bulk nonlinear crystal in a non-collinear configuration. The generated squeezed light exhibits a spatio-temporal multimode behavior that is probed using a homodyne measurement with a local oscillator shaped both spatially and temporally. Finally we follow a covariance matrix based approach to reveal the distribution of the squeezing among several independent temporal and spatial modes. This unambiguously validates the multimode feature of our source. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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3.3
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6.1W
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14.3W