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Superdense Coding of Quantum States

Harrow, Aram and Hayden, Patrick and Leung, Debbie (2004) Superdense Coding of Quantum States. Physical Review Letters, 92 (18). Art. No. 187901. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:HARprl04

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Abstract

We describe a method for nonobliviously communicating a 2l-qubit quantum state by physically transmitting l + o(l) qubits, and by consuming l ebits of entanglement plus some shared random bits. In the nonoblivious scenario, the sender has a classical description of the state to be communicated. Our method can be used to communicate states that are pure or entangled with the sender's system; l + o(l) and 3l + o(l) shared random bits are sufficient, respectively.


Item Type:Article
Additional Information:©2004 The American Physical Society (Received 30 August 2003; published 4 May 2004) A.H. acknowledges funding from the NSA and ARDA under ARO Contract No. DAAD19-01-1-06. P.H. and D.L. acknowledge the support of the Sherman Fairchild, the Richard Tolman, and the Croucher foundations, as well as the U.S. NSF under Grant No. EIA-0086038.
Subject Keywords:quantum communication; encoding; quantum entanglement
Record Number:CaltechAUTHORS:HARprl04
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:HARprl04
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.92.187901
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4508
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:25 Aug 2006
Last Modified:18 Sep 2014 18:11

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