International Journal of Modern Physics B

ENTANGLEMENT SWAPPING AND CONCENTRATION IN THE TWO-PHOTON JAYNES-CUMMINGS MODEL

YI-CAI WANG, Jin‐Ming Liu

Published Jun 20, 2007• 2 citations

Abstract

We propose a scheme for entanglement swapping and entanglement concentration without joint measurement by using the two-photon Jaynes-Cummings model. In the scheme, we can generate a maximally entangled pair between two initially uncorrelated atoms or cavities. Furthermore, the entangled state between two cavities is found to be a photon entanglement of two photons in one cavity and zero in another cavity.

DOI: 10.1142/s0217979207037387

Related papers

The Scheme of Entanglement Swapping in two-photon Jaynes-Cummings model

Liu Hong

Based on the interaction of atoms and two-photon in cavity QED,the author proposes an entanglement swapping scheme without joint measurement using a two-photon Jaynes-Cummings model.By means of entanglement swapping,we get a nonmaximally entangled pair between an atom and a cavity mode which previously have not any interaction with each other.Through entanglement concentration,we can obtain a maximally entangled state.It can be used in quantum information processing.

Journal of Gansu Lianhe UniversityJan 1, 20080 citations

Scheme for Generation of Maximally Entangled States via Entanglement Swapping

Wu, Zhenzhen, Fang +3 more

Based on two atoms and two cavities initially in two pairs of atom-photon nonmaximally entangled states, we propose a relatively simple scheme to create maximally entangled photon-photon and atom-photon states via entanglement swapping using techniques of cavity QED inspired by the scheme proposed in [Phys. Rev. A 71 (2005)044302] and [Phys. Rev. A 71 (2005) 034312]. Our scheme does not involve the measurement in Bell basis, we only require detecting the states of atoms.

理论物理通讯：英文版Jan 1, 20061 citation

Scheme for Generation of Maximally Entangled States via Entanglement Swapping

Wu Zhen-Zhen, Mao-Fa Fang, Chunlei Jiang

Based on two atoms and two cavities initially in two pairs of atom-photon nonmaximally entangled states, we propose a relatively simple scheme to create maximally entangled photon-photon and atom-photon states via entanglement swapping using techniques of cavity QED inspired by the scheme proposed in [Phys. Rev. A 71 (2005) 044302] and [Phys. Rev. A 71 (2005) 034312]. Our scheme does not involve the measurement in Bell basis, we only require detecting the states of atoms.

Communications in Theoretical PhysicsSep 1, 20063 citations

Generation of Maximally Entangled States Via Entanglement Swapping

Zhiping Huang

A relatively simple scheme for generating maximally entangled photon-photon and atom-photon states via entanglement swapping using techniques of cavity QED is proposed.The scheme of preparing the maximally entangled photon-photon state does not require the transfer of quantum information between the atoms and cavity.In the scheme the cavity is only virtually excited and thus the requirement on the quality factor of the cavity is greatly loosened.The scheme of preparing the maximally entangled atom-photon state based on the two-photon JaynesCummings model only requires detecting the state of the single atom rather than a joint-Bell measurement.

Journal of Fujian Normal UniversityJan 1, 20070 citations

Entanglement swapping in the two-photon Jaynes–Cummings model

A.D. dSouza, Wesley Bueno Cardoso, Ardiley Torres Avelar +1 more

In the present work, we study the entanglement swapping via the two-photon process without explicitly using the Bell-state measurement. We employ the appropriate ‘full two-photon Hamiltonian approach’ instead of the ‘effective Hamiltonian approach’ used in recent schemes. We obtain entanglement swapping with 94.7% fidelity for maximally entangled states by conveniently choosing the atom–field interaction time. The success probability is also considered.

Physica ScriptaDec 1, 200916 citations

Entanglement concentration of unknown states via the quantum dot plus double-sided cavity system

Xiao-Jie Yuan, Ming Yang, Ping Dong +1 more

In this letter we propose a scheme of entanglement concentration via entanglement swapping in the quantum dot (QD) plus double-sided cavity system with the help of an input photon. With our scheme, bipartite maximally entangled states among two spatially separated particles can be generated without direct interaction and initial entanglement. Moreover, four-particle maximally entangled states can be created too. Contrary to previous work investigating entanglement concentration in QD systems, the non-maximally entangled state to be concentrated can be unknown for us; furthermore, the complicated Bell-state measurement of entanglement swapping is replaced by single-photon detection, which will greatly reduce the realisation complexity of the current scheme.

Laser Physics LettersOct 14, 20154 citations