Quantum correlations in dual quantum measurements |
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| Authors: | Anders Karlsson Gunnar Björk |
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| Affiliation: | (1) Laboratory of Photonics and Microwave Engineering, Department of Electronics, Royal Institute of Technology (KTH) Electrum 229, 164 40 Kista, Sweden, SE |
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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. Received: 12 April 1996/Revised version: 2 July 1996 |
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| Keywords: | PACS: 42.50.Lc 42.50.Dv 03.65.B |
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