2010/07/27 by Christoph Simon, Hugues de Riedmatten, Mikael Afzelius
Computer Science · Physics and Astronomy · #Atomic and Subatomic Physics Research #Quantum Information and Cryptography #Quantum optics and atomic interactions #quant-ph
paper · pdf · doi:10.1103/physreva.82.010304
published as Phys. Rev. A 82, 010304(R) (2010) · 5 pages, 1 figure
openalex publication_date 2010/07/27 · arxiv created 2010/07/28 · arxiv updated 2010/07/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose a temporally multiplexed version of the Duan-Lukin-Cirac-Zoller (DLCZ) quantum-repeater protocol using controlled inhomogeneous spin broadening in atomic gases. A first analysis suggests that the advantage of multiplexing is negated by noise due to spin-wave excitations corresponding to unobserved directions of Stokes photon emission. However, this problem can be overcome with the help of a moderate-finesse cavity which is in resonance with Stokes photons, but invisible to the anti-Stokes photons. Our proposal promises greatly enhanced quantum repeater performance with atomic gases.