Encoding many qubits in a rotor

Details Encoding many qubits in a rotor Encoding many qubits in a rotor

2010-03-05

arxiv.org/abs/1003.1201v2

Phys. Rev. A 81, 052327 (2010)

Physics

Quantum Physics

11 pages, 5 figures

Scientific paper

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.

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