Phys. Rev. Lett. 81, 5932–5935 (1998)Quantum Repeaters: The Role of Imperfect Local Operations in Quantum CommunicationReceived 20 March 1998; published in the issue dated 28 December 1998 In quantum communication via noisy channels, the error probability scales exponentially with the length of the channel. We present a scheme of a quantum repeater that overcomes this limitation. The central idea is to connect a string of (imperfect) entangled pairs of particles by using a novel nested purification protocol, thereby creating a single distant pair of high fidelity. Our scheme tolerates general errors on the percent level, it works with a polynomial overhead in time and a logarithmic overhead in the number of particles that need to be controlled locally. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.5932
DOI:
10.1103/PhysRevLett.81.5932
PACS:
03.67.Hk, 03.65.Bz, 42.50.-p
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.