UNIGE document Scientific Article
previous document  unige:100453  next document
add to browser collection
Title

Multimode and Long-Lived Quantum Correlations Between Photons and Spins in a Crystal

Authors
Published in Physical Review Letters. 2017, vol. 118, no. 21, p. 210501
Abstract The realization of quantum networks and quantum repeaters remains an outstanding challenge in quantum communication. These rely on the entanglement of remote matter systems, which in turn requires the creation of quantum correlations between a single photon and a matter system. A practical way to establish such correlations is via spontaneous Raman scattering in atomic ensembles, known as the Duan-Lukin-Cirac-Zoller (DLCZ) scheme. However, time multiplexing is inherently difficult using this method, which leads to low communication rates even in theory. Moreover, it is desirable to find solid-state ensembles where such matter-photon correlations could be generated. Here we demonstrate quantum correlations between a single photon and a spin excitation in up to 12 temporal modes, in a 151Eu3+-doped Y2SiO5 crystal, using a novel DLCZ approach that is inherently multimode. After a storage time of 1 ms, the spin excitation is converted into a second photon. The quantum correlation of the generated photon pair is verified by violating a Cauchy-Schwarz inequality. Our results show that solid-state rare-earth-ion-doped crystals could be used to generate remote multimode entanglement, an important resource for future quantum networks.
Identifiers
Full text
Structures
Citation
(ISO format)
LAPLANE, Cyril et al. Multimode and Long-Lived Quantum Correlations Between Photons and Spins in a Crystal. In: Physical Review Letters, 2017, vol. 118, n° 21, p. 210501. https://archive-ouverte.unige.ch/unige:100453

72 hits

28 downloads

Update

Deposited on : 2017-12-18

Export document
Format :
Citation style :