Encoding many qubits in a rotor

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.052327· OSTI ID:21408801

Raynal, Philippe; Kalev, Amir ^[1]; Suzuki, Jun ^[2]; Englert, Berthold-Georg ^[1]

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1. Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 (Singapore)
2. National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo, 101-8430 (Japan)

We propose a scheme for encoding many qubits in a single rotor, that is, a continuous and periodic degree of freedom. A key feature of this scheme is its ability to manipulate and entangle the encoded qubits with a single operation on the system. We also show, using quantum error-correcting codes, how to protect the qubits against small errors in angular position and momentum which may affect the rotor. We then discuss the feasibility of this scheme and suggest several candidates for its implementation. The proposed scheme is immediately generalizable to qudits of any finite dimension.

• OSTI ID: 21408801
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.052327; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEGREES OF FREEDOM
ERRORS
OPERATION
PERIODICITY
QUBITS
INFORMATION
QUANTUM INFORMATION
VARIATIONS