Principal squeezing of vacuum fluctuations

Lukš, A.; Peřinová, V.; Peřina, Jan

doi:10.1016/0030-4018(88)90322-7

Cited by 109 publications

(75 citation statements)

References 5 publications

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“…Among many nonclassical intriguing properties of the model (see, e.g., Ref. [49] and references therein), the Kerr state exhibits high-degree quadrature squeezing [26,50]. We find that the single-mode normally-ordered variance S x φ of the quadrature operatorx φ =x 1 (φ) =â exp(−iφ) +â † exp(iφ) can be compactly written as follows: (15) with Eq.…”

Section: Periodic Sudden Vanishing Of Nonclassicality Witnesses Fmentioning

confidence: 99%

“…(15), can also be used in a single-mode case. The φ-optimized quadrature squeezing is referred to as principal squeezing and is defined by the witness [19,26]:…”

Section: A Examples Of Truncated Nonclassicality Witnessesmentioning

confidence: 99%

“…By applying the results of Refs. [26,50], we can compactly write the φ-optimized variance S opt describing the principal squeezing as follows…”

Section: Periodic Sudden Vanishing Of Nonclassicality Witnesses Fmentioning

confidence: 99%

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Sudden vanishing and reappearance of nonclassical effects: General occurrence of finite-time decays and periodic vanishings of nonclassicality and entanglement witnesses

et al. 2011

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Analyses of phenomena exhibiting finite-time decay of quantum entanglement have recently attracted considerable attention. Such decay is often referred to as sudden vanishing (or sudden death) of entanglement, which can be followed by its sudden reappearance (or sudden rebirth). We analyze various finite-time decays (for dissipative systems) and analogous periodic vanishings (for unitary systems) of nonclassical correlations as described by violations of classical inequalities and the corresponding nonclassicality witnesses (or quantumness witnesses), which are not necessarily entanglement witnesses. We show that these sudden vanishings are universal phenomena and can be observed: (i) not only for two-or multi-mode but also for single-mode nonclassical fields, (ii) not solely for dissipative systems, and (iii) at evolution times which are usually different from those of sudden vanishings and reappearances of quantum entanglement.

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Section: Periodic Sudden Vanishing Of Nonclassicality Witnesses Fmentioning

confidence: 99%

“…(15), can also be used in a single-mode case. The φ-optimized quadrature squeezing is referred to as principal squeezing and is defined by the witness [19,26]:…”

Section: A Examples Of Truncated Nonclassicality Witnessesmentioning

confidence: 99%

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Sudden vanishing and reappearance of nonclassical effects: General occurrence of finite-time decays and periodic vanishings of nonclassicality and entanglement witnesses

et al. 2011

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“…It can also serve as an efficient source of squeezed light [2] which amplitude fluctuations are suppressed below the limit given by quantum uncertainty relations (for a review, see, e.g., [3][4][5][6]). Such nonclassical light can be emitted both in the fundamental as well as second-subharmonic frequency (SSF) fields [7].…”

Section: Introductionmentioning

confidence: 99%

“…We utilize a sophisticated perturbation approach, the method of Fourier transformation in non-dispersion field propagation, and numerical solution for the general case. Squeezing is characterized by a principal squeeze variance introduced in [2,3,5] that is determined for suitable spectral modes.…”

Section: Introductionmentioning

confidence: 99%

Pulsed-squeezed-light generation in a waveguide with second-subharmonic generation and periodic corrugation

Peřina

2013

Phys. Rev. A

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*Quantum pulsed second-subharmonic generation in a planar waveguide with a small periodic corrugation at the surface is studied. Back-scattering of the interacting fields on the corrugation enhances the nonlinear interaction giving larger values of squeezing. The problem of back-scattering is treated by perturbation theory, using the Fourier transform for non-dispersion propagation, and by numerical approach in the general case. Optimum spectral modes for squeezed-light generation are found using the Bloch-Messiah reduction. Improvement in squeezing and increase of numbers of generated photons are quantified for the corrugation resonating with the fundamental and secondsubharmonic field. Splitting of the generated pulse by the corrugation is predicted.

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