Nonclassical correlations of photon number and field components in the vacuum state
arXiv:quant-ph/9912072 · doi:10.1103/PhysRevA.62.013806
Abstract
It is shown that the quantum jumps in the photon number n from zero to one or more photons induced by backaction evasion quantum nondemolition measurements of a quadrature component x of the vacuum light field state are strongly correlated with the quadrature component measurement results. This correlation corresponds to the operator expectation value <xnx> which is equal to one fourth for the vacuum even though the photon number eigenvalue is zero. Quantum nondemolition measurements of a quadrature component can thus provide experimental evidence of the nonclassical operator ordering dependence of the correlations between photon number and field components in the vacuum state.
13 pages, 3 figures, corrections of omissions in equations (6) and (25). To be published in Phys. Rev. A
References in corpus (1)
Cited by in corpus (5)
- Continuous variable teleportation of single photon states
- Entanglement and four wave mixing effects in the dissipation free nonlinear interaction of two photons at a single atom
- Observation of non-classical correlations in sequential measurements of photon polarization
- Finite resolution measurement of the non-classical polarization statistics of entangled photon pairs
- Extremal states for photon number and quadratures as gauges for nonclassicality