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Arbitrary and Fast Quantum Gate with Semiconductor Double-Dot Molecules on a Chip |
| ZOU Wei-Ping1, ZHANG Gang2, XUE Zheng-Yuan1**
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1Laboratory of Quantum Information Technology, and School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006
2Department of Mathematics and Physics, West Anhui University, Lu'an 237012
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| Cite this article: |
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ZOU Wei-Ping, ZHANG Gang, XUE Zheng-Yuan 2011 Chin. Phys. Lett. 28 120308 |
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Abstract We propose a scheme to achieve a kind of nontrivial two-qubit operation using controllable electrons in double-dot molecules coupled to a transmission line resonator. The implemented operation is geometrical in nature and insensitive to the state of the transmission line resonator. In particular, we are able to avoid conventional dispersive coupling so that a high speed gate operation can be achieved, which is important in view of decoherence. Meanwhile, we are able to further generalize the operation to an arbitrary phase case by dynamic decoupling with two sequences.
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| Keywords:
03.67.Lx
42.50.Pq
42.50.Dv
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Received: 20 May 2011
Published: 29 November 2011
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| PACS: |
03.67.Lx
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(Quantum computation architectures and implementations)
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42.50.Pq
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(Cavity quantum electrodynamics; micromasers)
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42.50.Dv
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(Quantum state engineering and measurements)
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