Simultaneous generation of two spin-wave-photon entangled states in an atomic ensemble
arXiv:1509.03159 · doi:10.1103/PhysRevA.93.052327
Abstract
The generation and storage of entangled photons play important roles in quantum information technique. Spontaneous Raman scattering (SRS) in atomic ensembles provides a promising method to generate entangled photons capable of storage. In the past experiments, a spin-wave-photon entangled state is produced via SRS in an atomic ensemble, with which a pair of entangled photons is obtained. Here, we report a scheme of simultaneously generating two spin-wave-photon entangled states in an atomic ensemble by collecting Stokes photons at two different directions. Based on the obtained two atom-photon entangled sources, we generate a three-photon GHZ polarization-entangled state and conditionally prepare a polarization-entangled photon pair, respectively.
References in corpus (10)
- Resource-efficient linear optical quantum computation
- Experimental entanglement of six photons in graph states
- Quantum Storage of Photonic Entanglement in a Crystal
- Experimental demonstration of a BDCZ quantum repeater node
- Entanglement Detection in the Stabilizer Formalism
- A Robust Atom-Photon Entanglement Source for Quantum Repeaters
- Remote Entanglement between a Single Atom and a Bose-Einstein Condensate
- Direct measurement of decoherence for entanglement between a photon and stored atomic excitation
- Efficient retrieval of a single excitation stored in an atomic ensemble
- Highly Retrievable Spinwave-Photon Entanglement Source