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Quantum correlations in dual quantum measurements

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Abstract.

 We analyze the quantum measurement properties of dual non-degenerate parametric amplifers in the twin-beam configuration, in the cascaded back-action-evasion configuration, and in Kerr-type photon-number quantum non-demolition measurements. It is found that Einstein-Podolsky-Rosen correlations can be obtained between the quadrature components of an idler mode and the sum of the readout of two signal modes. Furthermore, we discuss dual-mode quantum non-demolition measurements on the combination of two light modes, and the generation of number-state entanglement.

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Authors and Affiliations

  1. Laboratory of Photonics and Microwave Engineering, Department of Electronics, Royal Institute of Technology (KTH) Electrum 229, 164 40 Kista, Sweden, , , , , , SE

    Anders Karlsson & Gunnar Björk

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  1. Anders Karlsson
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  2. Gunnar Björk
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Received: 12 April 1996/Revised version: 2 July 1996

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Karlsson, A., Björk, G. Quantum correlations in dual quantum measurements. Appl Phys B 64, 235–241 (1997). https://doi.org/10.1007/s003400050169

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  • DOI: https://doi.org/10.1007/s003400050169

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