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Quantum
Information and Computation
ISSN: 1533-7146
published since 2001
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Vol.8 No.1&2
January 2008 |
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Universal quantum computation with electronic qubits in decoherence-free
subspace
(pp0096-0105)
X.-L.
Zhang, Mang Feng, and Kelin Gao
doi:
https://doi.org/10.26421/QIC8.1-2-7
Abstracts: We investigate how to carry
out universal quantum computation deterministically with free electrons
in decoherence-free subspace by using polarizing beam splitters, charge
detectors, and single-spin rotations. Quantum information in our case is
encoded in spin degrees of freedom of the electron-pairs which construct
a decoherence-free subspace. We design building blocks for two
noncommutable single-logic-qubit gates and a logic controlled phase
gate, based on which a universal and scalable quantum information
processing robust to dephasing is available in a deterministic way.
Key words:
decoherence-free subspace, quantum information |
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