Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Leoński, Wiesław"'
Publikováno v:
Phys. Rev. A 108, 033512 (2023)
We show that the loss of nonclassicality (including quantum entanglement) cannot be compensated by the (incoherent) amplification of PT-symmetric systems. We address this problem by manipulating the quantum fluctuating forces in the Heisenberg-Langev
Externí odkaz:
http://arxiv.org/abs/2302.04235
Publikováno v:
Phys. Rev. A 100, 053820 (2019)
A two-mode optical parity-time (PT) symmetric system, with gain and damping, described by a quantum quadratic Hamiltonian with additional small Kerr-like nonlinear terms, is analyzed from the point of view of nonclassical-light generation. Two kinds
Externí odkaz:
http://arxiv.org/abs/1910.10690
Akademický článek
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We discuss a model with ultra-cold atoms confined in optical superlattices. In particular, we study the ground-state properties of two spin-1 bosons trapped in a double-well potential. Depending on the external magnetic field and biquadratic interact
Externí odkaz:
http://arxiv.org/abs/1406.3756
Autor:
Kondej, Sylwia, Leoński, Wiesław
Publikováno v:
J. Phys. A: Math. Theor. 47 (2014) 225201
We study a straight infinite planer waveguide with, so called, leaky wire attached to the walls of the waveguide. The wire is modelled by an attractive delta interaction supported by a finite segment. If the wire is placed perpendicularly then the sy
Externí odkaz:
http://arxiv.org/abs/1405.6429
Autor:
Sawerwain, Marek, Leoński, Wiesław
Recently, it has been presented some algorithms and physical models which give prospects for construction of quantum computers capable to solve systems of linear equations. The common feature which is shared in these works is the use of qubits which
Externí odkaz:
http://arxiv.org/abs/1309.0800
Publikováno v:
Phys. Rev. A 85, 012321 (2012)
Entanglement between two electrons belonging to an auto-ionization system and a neighbor two-level atom produced by the dipole-dipole interaction is studied. The entanglement is quantified using the quadratic negativity of a bipartite system includin
Externí odkaz:
http://arxiv.org/abs/1201.1445
Publikováno v:
Phys. Rev. A 83, 052326 (2011)
Two nonlinear Kerr oscillators mutually coupled by parametric pumping are studied as a source of states entangled in photon numbers. Temporal evolution of entanglement quantified by negativity shows the effects of sudden death and birth of entangleme
Externí odkaz:
http://arxiv.org/abs/1104.4889
Publikováno v:
Phys. Rev. A 83, 053430 (2011)
Photoelectron ionization spectra of an autoionization system with one discrete level interacting with a neighbor two-level atom are discussed. The formula for long-time ionization spectra is derived. According to this formula, the spectra can be comp
Externí odkaz:
http://arxiv.org/abs/1104.1527
Publikováno v:
Phys. Rev. A 83, 053416 (2011)
Photoelectron ionization spectra of a system interacting with a neighbor two-level atom are investigated using the Laplace-transform method. These spectra are typically composed of several peaks. Photoelectron ionization spectra conditioned by the me
Externí odkaz:
http://arxiv.org/abs/1103.1753