10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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13 papers · 2 filters
Quantum motion of a neutron in a wave-guide in the gravitational field
A. Yu. Voronin, H. Abele, S. Baessler +4
We study theoretically the quantum motion of a neutron in a horizontal wave-guide in the gravitational field of the Earth. The wave-guide in question is equipped with a mirror belo…
On the meaning and interpretation of Tomography in abstract Hilbert spaces
V. I. Man'ko, G. Marmo, A. Simoni +3
The mechanism of describing quantum states by standard probability (tomographic one) instead of wave function or density matrix is elucidated. Quantum tomography is formulated in a…
Transmitting qudits through larger quantum channels
Grigory G. Amosov, Stefano Mancini, Vladimir I. Man'ko
We address the problem of transmitting states belonging to finite dimensional Hilbert space through a quantum channel associated with a larger (even infinite dimensional) Hilbert s…
Partial scaling transform of multiqubit states as a criterion of separability
C. Lupo, V. Man'ko, G. Marmo +1
The partial scaling transform of the density matrix for multiqubit states is introduced to detect entanglement of quantum states. The transform contains partial transposition as a…
Observation of polarization quantum noise of laser radiation in Rb vapor cell
Alexander S. Zibrov, Irina Novikova
We present experimental study of polarization quantum noise of laser radiation passed through optically think vapor of Rb87. We observe a step-like noise spectrum. We discuss vario…
From EIT photon correlations to Raman anti-correlations in coherently prepared Rb vapor
Vladimir A. Sautenkov, Yuri V. Rostovtsev, Marlan O. Scully
We have experimentally observed switching between photon-photon correlations (bunching) and anti-correlations (anti-bunching) between two orthogonally polarized laser beams in an E…
On the unique possibility to increase significantly the contrast of dark resonances on D1 line of Rb
A. V. Taichenachev, V. I. Yudin, V. L. Velichansky +1
We propose and study, theoretically and experimentally, a new scheme of excitation of a coherent population trapping resonance for D1 line of alakli atoms with nuclear spin …
Tomograms in the Quantum-Classical transition
V. I. Man'ko, G. Marmo, A. Simoni +2
The quantum-classical limits for quantum tomograms are studied and compared with the corresponding classical tomograms, using two different definitions for the limit. One is the Pl…
Differential geometry of density states
V. I. Man'ko, G. Marmo, E. C. G. Sudarshan +1
We consider a geometrization, i.e., we identify geometrical structures, for the space of density states of a quantum system. We also provide few comments on a possible application…
Pure superposition states of atoms generated by a bichromatic elliptically polarized filed
A. V. Taichenachev, V. I. Yudin, V. L. Velichansky +1
We find specific polarizations of components of a bichromatic field, which allow one to prepare pure superposition states of atoms, using the coherent population trapping effect. T…
Spectral Narrowing via Quantum Coherence
Eugeniy E. Mikhailov, Vladimir A. Sautenkov, Yuri V. Rostovtsev +4
We have studied the transmission of an optically thick Rb vapor that is illuminated by monochromatic and noise broaden laser fields in Lambda configuration. The spectral width of t…
Partial positive scaling transform: a separability criterion
Olga V. Manko, V. I. Manko, G. Marmo +3
The problem of constructing a necessary and sufficient condition for establishing the separability of continuous variable systems is revisited. Simon [R. Simon, Phys. Rev. Lett. 84…
Four-level and two-qubit systems, sub-algebras, and unitary integration
A. R. P. Rau, G. Selvaraj, D. Uskov
Four-level systems in quantum optics, and for representing two qubits in quantum computing, are difficult to solve for general time-dependent Hamiltonians. A systematic procedure i…