2005/10/13 by Jaromı́r Fiurášek, J. Fiurasek, Jacob Sherson +4
Computer Science · Physics and Astronomy · #Atomic and Subatomic Physics Research #Optoelectronics #Physics #Quantum #Quantum Information and Cryptography #Quantum information #Quantum mechanics #Quantum memory #Quantum network #Quantum optics and atomic interactions #quant-ph
paper · pdf · doi:10.1103/physreva.73.022331
published as Phys. Rev. A 73, 022331 (2006). · 8 pages, 2 figures, RevTeX4
arxiv created 2005/10/13 · openalex publication_date 2006/02/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A scheme for retrieving quantum information stored in collective atomic spin systems onto optical pulses is presented. Two off-resonant light pulses cross the atomic medium in two orthogonal directions and are interferometrically recombined in such a way that one of the outputs carries most of the information stored in the medium. In contrast to previous schemes our approach requires neither multiple passes through the medium nor feedback on the light after passing the sample, which makes the scheme very efficient. The price for that is some added noise which is, however, small enough for the method to beat the classical limits.