Quantum correlations in dual quantum measurements

Anders Karlsson, Gunnar Björk

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

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.

Original languageEnglish
Pages (from-to)235-241
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume64
Issue number2
DOIs
StatePublished - Feb 1997
Externally publishedYes

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