Robust scheme to generate N-atom W state in two distant cavities

Li, Wen-An

doi:10.1016/j.optcom.2010.03.020

Cited by 5 publications

(6 citation statements)

References 55 publications

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“…Current literature on the generation of W-states rely on different techniques. One of the well-known schemes is the cavity-fiber-cavity systems [40,41], where the entangled states are generated by coupling the atoms or molecules inside a cavity through an optical fiber and attempt to engineer central spin (qubit-star or spin star) models [58] indirectly by fine tuning the model parameters. These proposals naturally require a continuous physical coupling between the cavities, whereas we consider discrete interactions among the shuttle and register qubits with less control over the system parameters.…”

Section: Possible Implementationmentioning

confidence: 99%

“…An outstanding issue remains regarding the efficient generation and certification of GME. Several proposals have been developed in the literature each with their own associated strengths and drawbacks [20,[32][33][34][35][36][37][38][39][40][41][42], while there has been remarkable advances in the experimental generation of GME states [43][44][45]. An additionally important issue relates to the ability to entangle disconnected parts of a quantum device which enhances their versatility [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

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Robust multipartite entanglement generation via a collision model

et al. 2019

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We examine a simple scheme to generate genuine multipartite entangled states across disjoint qubit registers. We employ a shuttle qubit that is sequentially coupled, in an energy preserving manner, to the constituents within each register through rounds of interactions. We establish that stable W-type entanglement can be generated among all qubits within the registers. Furthermore, we find that the entanglement is sensitive to how the shuttle is treated, showing that a significantly larger degree is achieved by performing projective measurements on it. Finally, we assess the resilience of this entanglement generation protocol to several types of noise and imperfections, showing that it is remarkably robust. arXiv:1803.05243v2 [quant-ph]

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Section: Possible Implementationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Robust multipartite entanglement generation via a collision model

et al. 2019

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“…Then the Hamiltonian H 2 of (3) can be replaced by the effective Hamiltonian, which includes three parts: (i) the Stark shifts, (ii) the coupling between two bosonic modes induced by the atoms and (iii) the coupling between the bosonic modes and classical field. The effective Hamiltonian [19,23] is…”

Section: Modelmentioning

confidence: 99%

“…The coupled atomcavity-fiber systems are regarded as one of the most promising candidates for implementing distributed computation. Some schemes have been proposed for entanglement engineering for two or more atoms trapped in distant cavities connected by a fiber or fibers [15][16][17][18][19][20] and in coupled cavities [21,22]. In this paper, we propose a scheme for generation of NOON states for two atomic samples trapped in two distant optical cavities.…”

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confidence: 99%

Generation of NOON Sates for Two Atomic Samples Trapped in Two Distant Cavities

Lin

2011

Int J Theor Phys

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A scheme is proposed for generating NOON states for two atomic samples trapped in two distant cavities connected by a third cavity and optical fibers. In the scheme, all the atoms are always populated in the two degenerate ground states, so the atoms' spontaneous emission can be omitted approximately. During the operation neither the cavity modes nor fiber modes are excited, which is important in view of decoherence. The scheme does not include projective measurement and the NOON state is generated deterministically.

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“…For instance, entanglement of W states is not only maximally persistent and robust under particle loss, but also immune against global dephasing, and rather robust against bit flip noise. Considering the importance of W states, the generation of W states has attracted great attention in the last decade [16][17][18][19][20][21][22]. However, all these states are entangled states that are defined in Hilbert spaces with two dimensions.…”

Section: Introductionmentioning

confidence: 99%

Deterministic generation of a three-dimensional entangled state via quantum Zeno dynamics

Huang

2011

Phys. Rev. A

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A scheme is proposed for the generation of a three-dimensional entangled state for two atoms trapped in a cavity via quantum Zeno dynamics. Because the scheme is based on the resonant interaction, the time required to produce entanglement is very short compared with the dispersive protocols. We show that the resulting effective dynamics allows for the creation of robust qutrit-qutrit entanglement. The influence of various decoherence processes such as spontaneous emission and photon loss on the fidelity of the entangled state is investigated. Numerical results show that the scheme is robust against the cavity decay since the evolution of the system is restricted to a subspace with null-excitation cavity fields. Furthermore, the present scheme has been generalized to realize N-dimensional entanglement for two atoms.

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Robust scheme to generate N-atom W state in two distant cavities

Cited by 5 publications

References 55 publications

Robust multipartite entanglement generation via a collision model

Robust multipartite entanglement generation via a collision model

Generation of NOON Sates for Two Atomic Samples Trapped in Two Distant Cavities

Deterministic generation of a three-dimensional entangled state via quantum Zeno dynamics

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