Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Journal of Quantum Electronics

Entangled coherent states:generation

Hu Jie

Published Jan 1, 2011• 0 citations
OpenAlex

Abstract

A scheme of generating the Bell-type and cluster-type entangled coherent states(ECSs) via a single two-level atom and cavity modes initially prepared in coherent states is proposed.Discussions on the two ECSs are presented.When the atom interacts separately with two Ramsey zones and two cavity modes,the generation of Bell-type ECSs in separate cavities is realized after an atomic measurement.By adding the Ramsey zones and cavity modes,the cluster-type ECSs can be generated.The interaction time between the atom and cavity modes are allπ/2λ,where A is the effective atom-cavity coupling constant. At last the experimental feasibility of such proposal is discussed.

Related papers

Cluster-type entangled coherent states generation

F. C. Lourenço, A. Vidiella-Barranco, Niklaus Ursus Wetter +1 more

We present a generation scheme for the cluster‐type entangled coherent state (CTECS) among four spatially separated cavities. CTECS is a continuous variable extension, proposed by Munhoz et al. [1], of the qubits‐based cluster state, which is known to be the basis of one‐way quantum computing model. In this work we show how such generation could be achieved in a simple way. We consider two types of interaction between atoms and the quantized cavity field; the first one using a three‐level atom, described by the degenerate Raman coupled model and the second one using the dispersive two‐level Jaynes‐Cummings model. Besides the flying atom, which interacts with the four cavities, the scheme also uses one or two Ramsey Zones (depending on the type of atom), where a classical field transforms the atom's internal energy levels in an appropriate way. After crossing the cavities, the atom has to be measured, and CTECS are generated irrespective of the atomic detection result. In addition to the generation scheme, we also study the effect of energy dissipation on the CTECS. Explicit equations for the time dependent density operator and the purity are given.

AIP conference proceedings•Jan 1, 2008•2 citations

Generation of two-mode entangled coherent states via a cavity QED system

Qing-Xia Mu, Yonghong Ma, Ling Zhou

A scheme is presented for the generation of entangled coherent states in a single-atom cavity-QED system. In the scheme, a three-level V -type atom interacts dispersively with a two-mode cavity and is driven by a classical field. We show that under large detuning conditions the cavity field can evolve into maximally entangled coherent states when one cavity mode is initially prepared in an odd coherent state. The effect of the cavity losses on the entanglement is also studied.

Journal of Physics A Mathematical and Theoretical•May 15, 2009•6 citations

Generation of cluster-type entangled squeezed vacuum states

Wen Jing-Ji, Shao Xiao-Qiang, Jin Xing-Ri +2 more

We present a scheme to prepare cluster-type entangled squeezed vacuum states (CTESVS) by considering the two-photon interaction between a two-level atom and a high-quality cavity, driven by a strong classical field. After the realization of simple atomic measurements, the generation of CTESVS in four separate cavities is accomplished within the cavity decay time. In the case of large atom–cavity detuning, the scheme is immune to the effect of atomic spontaneous emission.

Chinese Physics B•May 1, 2008•7 citations

Scheme for generating a cluster-type entangled squeezed vacuum state via cavity QED

文晶姬, Yeon, Kyu-Hwang +2 more

A scheme is proposed to generate an N-qubit cluster-type entangled squeezed vacuum state(CTESVS) based on the two-photon interaction between a two-level atom and the cavity fields with the cavity QED system. The CTESVS in N separate cavities can be effectively obtained after performing a simple one-qubit measurement on the atom. The influence of cavity decay on the CTESVS is also discussed.

中国物理B：英文版•Jan 1, 2014•0 citations

Generation of cluster states for cavity fields

Jia Lian-Jun, Zhen‐Biao Yang, Huai‐Zhi Wu +1 more

This paper proposes an alternative scheme for generating cluster-type of entangled coherent states. This scheme is based on resonant interaction of a two-mode cavity with a two-level atom driven by strong classical fields. Thus the required interaction time is greatly shortened, which is very important in view of decoherence.

Chinese Physics B•Nov 1, 2008•6 citations

Generation of a 4-qubit cluster of entangled coherent states in bimodal QED cavities

E. M. Becerra-Castro, Wesley Bueno Cardoso, Ardiley Torres Avelar +1 more

We propose a scheme to generate a 4-qubit cluster of entangled coherent states in bimodal QED cavities. The scheme employs a single two-level atom that interacts dispersively with cavity modes initially prepared in coherent states. The fidelity and success probability of the state preparation are obtained considering the influence of atomic velocity spread and atomic efficiency detection. The scheme is also generalized for higher order cluster states.

arXiv:0709.0010•Journal of Physics B Atomic Molecular and Optical Physics•Apr 7, 2008•28 citations
A scheme of generating the Bell-type and cluster-type entangled coherent states(ECSs) via a single two-level atom and cavity modes initially prepared in coherent states is proposed.Discussions on the two ECSs are presented.When the atom interacts separately with two Ramsey zones and two cavity modes,the generation of Bell-type ECSs in separate cavities is realized after an atomic measurement.By adding the Ramsey zones and cavity modes,the cluster-type ECSs can be generated.The interaction time between the atom and cavity modes are allπ/2λ,where A is the effective atom-cavity coupling constant. At last the experimental feasibility of such proposal is discussed.
We present a generation scheme for the cluster‐type entangled coherent state (CTECS) among four spatially separated cavities. CTECS is a continuous variable extension, proposed by Munhoz et al. [1], of the qubits‐based cluster state, which is known to be the basis of one‐way quantum computing model. In this work we show how such generation could be achieved in a simple way. We consider two types of interaction between atoms and the quantized cavity field; the first one using a three‐level atom, described by the degenerate Raman coupled model and the second one using the dispersive two‐level Jaynes‐Cummings model. Besides the flying atom, which interacts with the four cavities, the scheme also uses one or two Ramsey Zones (depending on the type of atom), where a classical field transforms the atom's internal energy levels in an appropriate way. After crossing the cavities, the atom has to be measured, and CTECS are generated irrespective of the atomic detection result. In addition to the generation scheme, we also study the effect of energy dissipation on the CTECS. Explicit equations for the time dependent density operator and the purity are given.