Influence of phase damping on nonclassical properties of the two-mode Jaynes Cummings model

Hessian, H. A.; Ritsch, Helmut

doi:10.1088/0953-4075/35/22/305

Cited by 23 publications

(11 citation statements)

References 73 publications

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“…[34][35][36], we arrive at the explicit expression of the exact solution of the master equation (2) for multi-quanta twomode JC model in the following form:…”

Section: Analytic Solution Of the Master Equationmentioning

confidence: 99%

Entropy Growth and Formation of Stationary Entanglement due to Intrinsic Noise in the Two-Mode JC Model

Hessian¹

2013

Quant. Phys. Lett.

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Abstract:We investigate the dynamics of the two-mode Jaynes-Cummings model with generalized nonlinear coupling including intrinsic noise as described by the Milburn equation. Based on a general analytic solution of the corresponding master equation, we calculate the growth of entropy in the system at the special case of two Raman-coupled long lived atomic states as well as the partial entropies of the atom and field subsystem. We see that the system is very sensitive to phase noise, if both fields are initially in a coherent state. The dynamics then rapidly leads to suppression of quantum revivals and a steady entanglement between the fields and the atom. This hints for serious limitations for the use of Raman induced transitions in quantum information processing setups. For an alternative entanglement measure we calculate the negativity of the eigenvalues of the partially transposed density matrix and compare it to the difference of the total entropy to the sum of field and atom partial entropies.

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“…[34][35][36], we arrive at the explicit expression of the exact solution of the master equation (2) for multi-quanta twomode JC model in the following form:…”

Section: Analytic Solution Of the Master Equationmentioning

confidence: 99%

Entropy Growth and Formation of Stationary Entanglement due to Intrinsic Noise in the Two-Mode JC Model

Hessian¹

2013

Quant. Phys. Lett.

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“…However, the recent studies of decoherence effect for different systems are increased due to the variety of applications in areas as quantum optics and quantum information [4][5][6][7]. In fact, the interactions between a quantum system with the environment are caused two types of irreversible effects, e.g., quantum dissipation and quantum decoherence [8,9].…”

Section: Introductionmentioning

confidence: 99%

Dispersive reservoir influence on the superconducting phase qubit

Hessian

Mohamed

Homid

2015

Int. J. Quantum Inform.

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In this article, an analytical description is presented based on the master equation. This master equation is formed from the system of superconducting phase qubit which is coupled to a torsional resonator and damped by a dispersive reservoir. An analytical approach for searching of some physical phenomena on the qubit system is presented, such as qubit inversion, purity and negativity. In addition, these phenomena are discussed for the resonance and off-resonance cases for many different initial states. From computational results, it is found that the mentioned phenomena depend on the dispersive reservoir parameter which leads to their death. However, the complete destruction of system coherence in the presence of dispersive reservoir leads to the death of entanglement between the qubit and torsional resonator.

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“…Decoherence phenomenon is the most dangerous obstacle for all entanglement manipulations. However, the recent studies of decoherence effect for different systems are increased due to the variety of applications in areas as quantum optics and quantum information [4][5][6][7]. In fact, the interactions between a quantum system with the environment are caused two types of irreversible effects, e.g., quantum dissipation and quantum decoherence [8,9].…”

Section: Introductionmentioning

confidence: 99%