Entanglement preservation of two coupled modes

Rossi, R.

doi:10.1016/j.physleta.2010.04.003

Cited by 7 publications

(6 citation statements)

References 24 publications

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“…We can control the system by interrupting the free evolution periodically with a certain operation, so that the state of the controlled evolution is confined in a subset of a state space very close to the initial state and the entanglement can be preserved very well. This idea is inspired by prior work of R. Rossi [22].…”

Section: Model and Schemementioning

confidence: 99%

Preservation of entanglement in a two-qubit-spin coupled system

et al. 2012

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A theoretical scheme to preserve the entanglement in a two-qubit-spin coupled system in the presence of Dzyaloshinskii-Moriya (DM) anisotropic antisymmetric interaction is proposed. Based on a sequence of operations performed periodically on the system, the scheme can preserve the entanglement of the system starting from any initial state with any high precision for any long duration.Comment: Accepted by Annals of Physic

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Section: Model and Schemementioning

confidence: 99%

Preservation of entanglement in a two-qubit-spin coupled system

et al. 2012

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“…Therefore, researchers used several strategies to preserve entanglement for a long time limit to allow the performances of quantum computation and quantum communication. In this regard, it was shown that the evolution of a quantum system can be slowed down or even frozen by frequent repeated projective measurements during a defined period of time which is known as the quantum Zeno effect [2,3,4,5]. Also, the other way for protecting the entanglement was performed by modulating the detuning between the qubits and the central frequency of an imperfect cavity [6,7].…”

Section: Introductionmentioning

confidence: 99%

Protection of entanglement for a two-qutrit V-type open system on the basis of system-reservoir bound states

2019

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In this work, a mechanism for long time protection of entanglement of a two-qutrit Vtype atomic system each of which interacts independently with a dissipative reservoir is investigated. It is shown that the protection process is related exclusively on the formation of bound states in system-reservoir energy spectrum. It is demonstrated that the degree of boundedness for the system-reservoir bound states is well-controlled by entering other V-type qutrits into the reservoirs, and also through the manipulation of the spontaneously generated interference related to decay channels of the V-type atoms.

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“…Therefore, it is very important to find out a mechanism whose advantage leads to an effective long-time entanglement preservation. So far, a lot of researches have been devoted to entanglement manipulation and protection, such as quantum Zeno effect (QZE) [4,5,6,7] and detuning modulation [8,9].…”

Section: Introductionmentioning

confidence: 99%

Requirement of system–reservoir bound states for entanglement protection

Behzadi

Ahansaz

Faizi

et al. 2018

Quantum Inf Process

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In this work, a genuine mechanism of entanglement protection of a two-qubit system interacting with a dissipative common reservoir is investigated. Based on the generating of bound state for the system-reservoir, we show that stronger bound state in the energy spectrum can be created by adding other non-interacting qubits into the reservoir. In the next step, it is found that obtaining higher degrees of boundedness in the energy spectrum leads to better protection of two-qubit entanglement against the dissipative noises. Also, it is figured out that the formation of bound state not only exclusively determines the long time entanglement protection, irrespective to the Markovian and non-Markovian dynamics, but also performs the task for reservoirs with different spectral densities.

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Entanglement preservation of two coupled modes

Cited by 7 publications

References 24 publications

Preservation of entanglement in a two-qubit-spin coupled system

Preservation of entanglement in a two-qubit-spin coupled system

Protection of entanglement for a two-qutrit V-type open system on the basis of system-reservoir bound states

Requirement of system–reservoir bound states for entanglement protection

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