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理论物理通讯：英文版

Scheme for Generation of Maximally Entangled States via Entanglement Swapping

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

Published Jan 1, 2006• 1 citation
OpenAlex

Abstract

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.

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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.
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.