2018/09/10 by Alessandro Zavatta, A. Zavatta, M. Artoni +2
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Mixing (physics) #Narrowband #Optics #Photon #Photon entanglement #Physics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum mechanics #Quantum network #Quantum optics and atomic interactions #Quantum teleportation #Qubit #Spontaneous parametric down-conversion #W state #quant-ph
paper · pdf · doi:10.1103/physreva.99.031802
published as Phys. Rev. A 99, 031802 (2019)
arxiv created 2018/09/10 · openalex created_date 2018/09/27 · openalex publication_date 2019/03/19 · arxiv updated 2019/03/27 · openalex updated_date 2026/08/05
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.