Engineering of heralded narrowband color-entangled states
Authors: Zavatta A., Artoni M., La Rocca G.
Autors Affiliation: Ist Nazl Ottica, CNR, Largo E Fermi 6, I-50125 Florence, Italy; European Lab Nonlinear Spect, Via N Carrara 1, I-50019 Sesto Fiorentino, Italy; Univ Firenze, Dipartimento Fis Astron, I-50019 Sesto Fiorentino, Italy; Ist Nazl Ottica, CNR, Via Branze 45, I-25123 Brescia, Italy; Brescia Univ, Dept Informat Engn, I-25123 Brescia, Italy; Scuola Normale Super Pisa, I-56126 Pisa, Italy; CNISM, I-56126 Pisa, Italy
Abstract: The efficient generation of entanglement is an essential requirement for quantum communications; however, long distances can only be achieved by utilizing entangled states that can be efficiently mapped into matter. Hence, sources generating states with bandwidths naturally compatible with the linewidths of atomic transitions are crucial. We harness the indistinguishability between two spontaneous four-wave mixing processes to achieve the heralded generation of single-photon frequency-bin entangled states. State manipulation admits entanglement and generation probability optimizations yet with negligible absorption. The scheme could also be adapted to photonic and solid interfaces.
Journal/Review: PHYSICAL REVIEW A
Volume: 99 (3) Pages from: 031802-1 to: 031802-7
More Information: We are indebted to Prof. Jin Hui Wu for many insightful discussions. Support from the Italian Ministry of Foreign Affairs (MAECI) and the National Natural Science Foundation of China (NSFC) (Cooperative Program PGR05482), Ente Cassa di Risparmio di Firenze, and the Italian Ministry of University and Research (MIUR) (QSec-GroundSpace) are greatly acknowledged.KeyWords: QUANTUM COMMUNICATION; PULSE-PROPAGATIONDOI: 10.1103/PhysRevA.99.031802Citations: 7data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2023-12-03References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here