Two-reservoir model of quantum error correction

Journal Article · Wed Feb 15 04:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.022337· OSTI ID:20974553

Clemens, James P; Gea-Banacloche, Julio ^[1]

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1. Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701 (United States) and Department of Physics, Miami University, Oxford, Ohio 45056 (United States)

We consider a two-reservoir model of quantum error correction with a hot bath causing errors in the qubits and a cold bath cooling the ancilla qubits to a fiducial state. We consider error correction protocols both with and without measurement of the ancilla state. The error correction acts as a kind of refrigeration process to maintain the data qubits in a low entropy state by periodically moving the entropy to the ancilla qubits and then to the cold reservoir. We quantify the performance of the error correction as a function of the reservoir temperatures and cooling rate by means of the fidelity and the residual entropy of the data qubits. We also make a comparison with the continuous quantum error correction model of Sarovar and Milburn [Phys. Rev. A 72, 012306 (2005)].

• OSTI ID: 20974553
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 73; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CORRECTIONS
ENTROPY
ERRORS
INFORMATION THEORY
PERIODICITY
QUANTUM MECHANICS
QUBITS
RESERVOIR TEMPERATURE