Error correction in ensemble registers for quantum repeaters and quantum computers

Abstract

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 atoms are presented.

4 pages, 2 figures

References in corpus (3)

• Experimental demonstration of quantum memory for light
• Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks
• Quantum computing with collective ensembles of multi-level systems

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