Error correction in ensemble registers for quantum repeaters and quantum computers

We propose to use a collective excitation blockade mechanism to identify errors that occur due to disturbances of single atoms in ensemble quantum registers where qubits are stored in the collective population of different internal atomic states. A simple error correction procedure and a simple deco...

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Veröffentlicht in:	Physical review letters 2008-03, Vol.100 (11), p.110506-110506, Article 110506
Hauptverfasser:	Brion, E, Pedersen, L H, Saffman, M, Mølmer, K
Format:	Artikel
Sprache:	eng
Schlagworte:	ALKALI METALS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COLLECTIVE EXCITATIONS CORRECTIONS DISTURBANCES ERRORS QUANTUM COMPUTERS QUANTUM MECHANICS QUBITS
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creator	Brion, E Pedersen, L H Saffman, M Mølmer, K
description	We propose to use a collective excitation blockade mechanism to identify errors that occur due to disturbances of single atoms in ensemble quantum registers where qubits are stored in the collective population of different internal atomic states. A simple error correction procedure and a simple decoherence-free encoding of ensemble qubits in the hyperfine states of alkali-metal atoms are presented.
doi_str_mv	10.1103/physrevlett.100.110506
format	Article
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subjects	ALKALI METALS CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COLLECTIVE EXCITATIONS CORRECTIONS DISTURBANCES ERRORS QUANTUM COMPUTERS QUANTUM MECHANICS QUBITS
title	Error correction in ensemble registers for quantum repeaters and quantum computers
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