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Proceedings Paper

Protocols and prospects for building a quantum repeater
Author(s): Peter van Loock
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Paper Abstract

An overview will be given of various approaches to implementing a quantum repeater for quantum communication over large distances. This includes a discussion of systems and protocols that are experimentally feasible and thus realizable in the midterm in order to go beyond the current limit of a few hundred km given by direct quantum-state transmissions. At the same time, these schemes should be, in principle, scalable to arbitrary distances. In this context, the influence of various elements and strategies in a quantum repeater protocol on the final fidelities and rates shall be addressed: initial entanglement distribution, Bell measurements, multiplexing, postselection, quantum memories, and quantum error detection/correction. Solely on the hardware side, the differences in using just single quanta or instead employing many quanta for the flying (photons) and the stationary (atoms) qubits will be pointed out.

Paper Details

Date Published: 29 October 2013
PDF: 7 pages
Proc. SPIE 8899, Emerging Technologies in Security and Defence; and Quantum Security II; and Unmanned Sensor Systems X, 88990U (29 October 2013); doi: 10.1117/12.2033316
Show Author Affiliations
Peter van Loock, Johannes Gutenberg Univ. Mainz (Germany)


Published in SPIE Proceedings Vol. 8899:
Emerging Technologies in Security and Defence; and Quantum Security II; and Unmanned Sensor Systems X
Edward M. Carapezza; Keith L. Lewis; Mark T. Gruneisen; Miloslav Dusek; Richard C. Hollins; Thomas J. Merlet; John G. Rarity, Editor(s)

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