2014/10/16 by John M. Donohue, Jonathan Lavoie, Kevin J. Resch
Computer Science · Physics and Astronomy · #Computer science #Laser #Mechanical and Optical Resonators #Multiplexing #Optics #Optoelectronics #Photon #Photon entanglement #Physics #Polarization (electrochemistry) #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum information science #Quantum mechanics #Quantum optics and atomic interactions #Telecommunications #Ultrashort pulse #physics.optics #quant-ph
paper · pdf · doi:10.1103/physrevlett.113.163602
published as Phys. Rev. Lett. 113, 163602 (2014) · 4 pages main body, 2 pages references, 5 pages supplemental material. 4 figures in main body, 2 figures and 2 tables in supplemental material
arxiv created 2014/10/16 · openalex publication_date 2014/10/16 · arxiv updated 2014/10/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Maximizing the information transmission rate through quantum channels is essential for practical implementation of quantum communication. Time-division multiplexing is an approach for which the ultimate rate requires the ability to manipulate and detect single photons on ultrafast time scales while preserving their quantum correlations. Here we demonstrate the demultiplexing of a train of pulsed single photons using time-to-frequency conversion while preserving their polarization entanglement with a partner photon. Our technique converts a pulse train with 2.69 ps spacing to a frequency comb with 307 GHz spacing which may be resolved using diffraction techniques. Our work enables ultrafast multiplexing of quantum information with commercially available single-photon detectors.