排序方式: 共有32条查询结果,搜索用时 31 毫秒
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H. Eleuch N. Rachid 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2010,57(2):259-264
We study the photon statistics of the field emitted from a semiconductor microcavity containing a quantum well in the non-linear
regime. The q-deformed boson concept (quon) allows us to derive an analytical expression of the autocorrelation function in
non-resonant pumping. The dependence of the dynamical behavior of the autocorrelation function on the q deformation parameter
is discussed. 相似文献
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In this paper, we study a Hamiltonian system constituted by two coupled two-level atoms (qubits) interacting with a nonlinear generalized cavity field. The nonclassical two-qubit correlation dynamics are investigated using Bures distance entanglement and local quantum Fisher information under the influences of intrinsic decoherence and qubit–qubit interaction. The effects of the superposition of two identical generalized coherent states and the initial coherent field intensity on the generated two-qubit correlations are investigated. Entanglement of sudden death and sudden birth of the Bures distance entanglement as well as the sudden changes in local Fisher information are observed. We show that the robustness, against decoherence, of the generated two-qubit correlations can be controlled by qubit–qubit coupling and the initial coherent cavity states. 相似文献
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We introduce the scattering problem in the case of one-dimensional space. The transmission factor is calculated for the whole domain of the potential energy. Connection with a field in interaction with a two-level quantum system is established for which the coupling parameter is considered to be explicitly time-dependent. 相似文献
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S. Abdel-Khalek S. Barzanjeh H. Eleuch 《International Journal of Theoretical Physics》2011,50(9):2939-2950
We explore the dynamics of the entanglement in a semiconductor cavity QED containing a quantum well. We show the presence
of sudden birth and sudden death for some particular sets of the system parameters. 相似文献
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H. Eleuch 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2008,49(3):391-395
Our work presents a theoretical study on the behavior of the fluctuation statistics of the field emitted from a semiconductor
microcavity containing a quantum well. We derive an analytical expression of the noise spectra in non-resonant pumping. Dynamical
behaviors of the noise spectra depending on the thermal bath and the detuning between exciton and cavity frequencies are discussed. 相似文献
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International Journal of Theoretical Physics - We consider a dissipative system of two qubits interacting with a cavity field through the degenerate 2-photon transitions. The cavity is initially... 相似文献
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Sayed Abdel-Khalek Kamal Berrada Eied M. Khalil Abdel-Shafy F. Obada Esraa Reda Hichem Eleuch 《Entropy (Basel, Switzerland)》2021,23(5)
In this work, we introduce the standard Tavis-Cummings model to describe two-qubit system interacting with a single-mode field associated to power-law (PL) potentials. We explore the effect of the time-dependent interaction and the Kerr-like medium. We solve the Schrödinger equation to obtain the density operator that allows us to investigate the dynamical behaviour of some quantumness measures, such as von Neumann entropy, negativity and Mandel’s parameter. We provide how these entanglement measures depend on the system parameters, which paves the way towards better control of entanglement generation in two-qubit systems. We find that the enhancement and preservation of the atoms-field entanglement and atom-atom entanglement can be achieved by a proper choice of the initial parameters of the field in the absence and presence of the time-dependent interaction and Kerr medium. We examine the photons distribution of the field and determine the situations for which the field exhibits super-poissonian, poissonian or sub-poissonian distribution. 相似文献
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H.?Eleuch N.?Ben?NessibEmail author R.?Bennaceur 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2004,29(3):391-395
We present, in this work a simple analytical expression of line emission in weakly non ideal plasma using a simplified quantum model. This formalism allows to explain the variations of the line widths with the density in a weakly non ideal plasma. We apply this model to plasma neutral helium lines HeI 6678 Å and HeI 5876 Å and explain the non linearity of the line width.Received: 17 January 2004, Published online: 4 May 2004PACS:
32.70.Jz Line shapes, widths, and shifts - 31.15.Lc Quasiparticle methods - 42.50.-p Quantum optics 相似文献