Comparative study of nonclassicality, entanglement, and dimensionality of multimode noisy twin beams

Abstract

Nonclassicality, entanglement, as well as dimensionality of a noisy twin beam are determined using characteristic function of the beam written in the Fock basis. One-to-one correspondence between the negativity quantifying entanglement and the nonclassicality depth is revealed. Twin beams, which are either entangled or nonclassical (independent of their entanglement), are observed only for the limited degrees of noise that degrades their quantumness. Dimensionality of the twin beam quantified by the participation ratio is compared with the dimensionality of entanglement determined from the negativity. The partition of the degrees of freedom of the twin beam into those related to entanglement and to noise is suggested. Both single-mode and multimode twin beams are analyzed. Weak nonclassicality based on integrated-intensity quasidistributions of multimode twin beams is studied. Relation of the model to the experimental twin beams is discussed.

12 pages, 11 figures

References in corpus (13)

• Experimental quantum teleportation
• Testing nonclassicality in multimode fields: a unified derivation of classical inequalities
• Sub-shot-noise photon-number correlation in mesoscopic twin-beam of light
• Transverse Entanglement Migration in Hilbert Space
• Anisotropically high entanglement of biphotons generated in spontaneous parametric down conversion
• Nonclassical correlation properties of radiation fields
• Inseparability criteria based on matrices of moments
• Sudden vanishing and reappearance of nonclassical effects: General occurrence of finite-time decays and periodic vanishings of nonclassicality and entanglement witnesses
• Comment on ``Inseparability Criteria for Continuous Bipartite Quantum States''
• Method for universal detection of two-photon polarization entanglement
• Intensity correlations, entanglement properties and ghost imaging in multimode thermal-seeded parametric downconversion: Theory
• Quantifying entanglement of a two-qubit system via measurable and invariant moments of its partially transposed density matrix
• Quantum correlation and entanglement between an ionizing system and a neighbor atom interacting directly and via a quantized field

Cited by in corpus (6)

• Experimental detection of nonclassicality of single-mode fields via intensity moments
• Experimental quantification of the entanglement of noisy twin beams
• Experimental identification of non-classicality of noisy twin beams and other related two-mode states
• Entanglement and nonclassicality in four-mode Gaussian states generated via parametric down-conversion and frequency up-conversion
• Enhancing entanglement detection of quantum optical frequency combs via stimulated emission
• Effect of noisy channels on the transmission of mesoscopic twin-beam states