2013/04/18 by Karel Lemr, Karol Bartkiewicz, Antonín Černoch +1 · 79 citations
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Computer network #Computer science #Electrical engineering #Engineering #Mathematics #Neural Networks and Reservoir Computing #Optical Network Technologies #Photonics #Physics #Quantum #Quantum Information and Cryptography #Quantum mechanics #Qubit #Router #SIGNAL (programming language) #Scheme (mathematics) #Topology (electrical circuits) #quant-ph
paper · pdf · doi:10.1103/physreva.87.062333
published in Physical Review A 87(6) (American Physical Society) · 7 pages, 6 figures
arxiv created 2013/04/18 · openalex publication_date 2013/06/25 · arxiv updated 2013/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
An all-linear-optical scheme for a fully featured quantum router is presented. This device directs the signal photonic qubit according to the state of one control photonic qubit. In the introduction we formulate the list of requirements imposed on a fully quantum router. Then we describe our proposal, showing the exact principle of operation on a linear-optical scheme. Subsequently we provide a generalization of the scheme in order to optimize the success probability by means of a tunable controlled-phase gate. Finally, we show how one can modify the device to route multiple signal qubits using the same control qubit.