-3]-
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`ABSTRACT
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`A degenerate four-wave mixing (DFWM) squeezed light apparatus includes one or more
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`pump beams, a probe beam, a vapor cell, a repump beam, and a detector. The one or more pump
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`beams includes an input power of no greater than about 150 mW. The vaporcell includes an atomic
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`vapor configured to interact with overlapped pump and probe beams to generate an amplified probe
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`beam and a conjugate beam. The repump beam is configured to optically pump the atomic vaporto a
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`ground state and decrease atomic decoherence of the atomic vapor. The detector is configured to
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`measure squeezing due to quantum correlations between the amplified probe beam and the conjugate
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`beam. The one or more pump beams, the probe beam, and the repump beam are configured to
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`generate two-mode squeezed light by DFWMwith squeezing of at least 3 dB belowshot noise.
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`1427668 L docx
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`2272.3450000/MSB-19-09P
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