Quantum computation in decoherence-free subspace with superconducting devices
Quantum Physics
2009-09-08 v3
Abstract
We propose a scheme to implement quantum computation in decoherence-free subspace with superconducting devices inside a cavity by unconventional geometric manipulation. Universal single-qubit gates in encoded qubit can be achieved with cavity assisted interaction. A measurement-based two-qubit Controlled-Not gate is produced with parity measurements assisted by an auxiliary superconducting device and followed by prescribed single-qubit gates. The measurement of currents on two parallel devices can realize a projective measurement, which is equivalent to the parity measurement on the involved devices.
Cite
@article{arxiv.0806.0753,
title = {Quantum computation in decoherence-free subspace with superconducting devices},
author = {Zheng-Yuan Xue and Shi-Liang Zhu and Z. D. Wang},
journal= {arXiv preprint arXiv:0806.0753},
year = {2009}
}
Comments
v2: thoroughly rewritten version with title and motivation changed; v3: published version with detail dirivations