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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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20 papers · 2 filters
Moyal and tomographic probability representations for f-oscillator quantum states
Vladimir I. Man'ko, Giuseppe Marmo, Francesco Zaccaria
States of nonlinear quantum oscillators (f-oscillators) are considered in the Weyl-Wigner-Moyal representation and the tomographic probability representation, where the states are…
Distances between quantum states in the tomographic-probability representation
S. N. Filippov, V. I. Man'ko
Distances between quantum states are reviewed within the framework of the tomographic-probability representation. Tomographic approach is based on observed probabilities and is str…
Scaling Separability Criterion: Application To Gaussian States
Alexandr Sergeevich, Vladimir I. Man'ko
We introduce examples of three- and four-mode entangled Gaussian mixed states that are not detected by the scaling and Peres-Horodecki separability criteria. The presented modifica…
Probability representation and quantumness tests for qudits and two-mode light states
S. N. Filippov, V. I. Man'ko
Using tomographic-probability representation of spin states, quantum behavior of qudits is examined. For a general j-qudit state we propose an explicit formula of quantumness witne…
Methods for Estimating Capacities and Rates of Gaussian Quantum Channels
Oleg V. Pilyavets, Cosmo Lupo, Stefano Mancini
Optimization methods aimed at estimating the capacities of a general Gaussian channel are developed. Specifically evaluation of classical capacity as maximum of the Holevo informat…
Chebyshev polynomials and Fourier transform of SU(2) irreducible representation character as spin-tomographic star-product kernel
S. N. Filippov, V. I. Man'ko
Spin-tomographic symbols of qudit states and spin observables are studied. Spin observables are associated with the functions on a manifold whose points are labelled by spin projec…
An introduction to the tomographic picture of quantum mechanics
A. Ibort, V. I. Man'ko, G. Marmo +2
Starting from the famous Pauli problem on the possibility to associate quantum states with probabilities, the formulation of quantum mechanics in which quantum states are described…
Testing the Stability of the Fine Structure Constant in the Laboratory
N. Kolachevsky, A. Matveev, J. Alnis +6
In this review we discuss the progress of the past decade in testing for a possible temporal variation of the fine structure constant . Advances in atomic sample preparation, la…
Spin tomography and star-product kernel for qubits and qutrits
S. N. Filippov, V. I. Man'ko
Using the irreducible tensor-operator technique, we establish the relation between different forms of spin tomograms. Quantizer and dequantizer operators are presented in simple ex…
Frank-Condon principle and adjustment of optical waveguides with nonhomogeneous refractive indices
Vladimir I. Man'ko, Leonid D. Mikheev, Alexandr Sergeevich
The adjustment of two different selfocs is considered using both exact formulas for the mode-connection coefficients expressed in terms of Hermite polynomials of several variables…
Electromagnetically induced transparency controlled by a microwave field
Hebin Li, Vladimir A. Sautenkov, Yuri V. Rostovtsev +3
We have experimentally studied propagation of two optical fields in a dense rubidium (Rb) vapor in the case when an additional microwave field is coupled to the hyperfine levels of…
Separability and entanglement of four-mode Gaussian states
Vladimir I. Man'ko, Alexandr A. Sergeevich
The known Peres-Horodecki criterion and scaling criterion of separability are considered on examples of three-mode and four-mode Gaussian states of electromagnetic field. It is sho…
Tomographic Representation of Quantum Mechanics and Statistical Physics
Olga V. Man'ko
A review of the photon-number tomography and symplectic tomography as examples of star-product quantization is presented. The classical statistical mechanics is considered within t…
Quantum Fourier transform and tomographic Renyi entropic inequalities
M. A. Man'ko, V. I. Man'ko
Renyi entropy associated with spin tomograms of quantum states is shown to obey to new inequalities containing the dependence on quantum Fourier transform. The limiting inequality…
Entropic uncertainty relations for electromagnetic beams
Sergio De Nicola, Renato Fedele, Margarita A. Man'ko +1
The symplectic tomograms of 2D Hermite--Gauss beams are found and expressed in terms of the Hermite polynomials squared. It is shown that measurements of optical-field intensities…
Superposition rule and entanglement in diagonal and probability representations of density states
Vladimir I. Man'ko, Giuseppe Marmo, E. C. George Sudarshan
The quasidistributions corresponding to the diagonal representation of quantum states are discussed within the framework of operator-symbol construction. The tomographic-probabilit…
Vapor pressure dependence of spectral width of EIT in Lambda-level cesium molecular system
Hui Chen, Hebin Li, Yuri V. Rostovtsev +3
We have studied electromagnetically induced transparency (EIT) in diatomic cesium molecules in a vapor cell by using tunable diode lasers. We have observed a sub-natural Lambda-res…
Quantumness tests and witnesses in the tomographic-probability representation
S. N. Filippov, V. I. Man'ko
In view of the tomographic-probability representation of quantum states, we reconsider the approach to quantumness tests of a single system developed in [Alicki and Van Ryn 2008 J.…
Qubit portrait of the photon-number tomogram and separability of two-mode light states
S. N. Filippov, V. I. Man'ko
In view of the photon-number tomograms of two-mode light states, using the qubit-portrait method for studying the probability distributions with infinite outputs, the separability…
Capacities of lossy bosonic channel with correlated noise
Cosmo Lupo, Oleg V. Pilyavets, Stefano Mancini
We evaluate the information capacities of a lossy bosonic channel with correlated noise. The model generalizes the one recently discussed in [Phys. Rev. A 77, 052324 (2008)], where…