Abstract
In the framework of ion-trap quantum computing, we develop a characterization of experimentally realistic imperfections which may affect the Cirac-Zoller implementation of the cnot gate.
The cnot operation is performed by applying a protocol of five laser pulses of appropriate frequency and polarization. The laser-pulse protocol exploits auxiliary levels, and its imperfect implementation leads to unitary as well as non-unitary errors affecting the cnot operation.
We provide a characterization of such imperfections, which are physically realistic and have never been considered before to the best of our knowledge. Our characterization shows that imperfect laser pulses unavoidably cause a leak of information from the states which alone should be transformed by the ideal gate, into the ancillary states exploited by the experimental implementation.
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References
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© 2010 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Felloni, S., Strini, G. (2010). An Error Model for the Cirac-Zoller cnot Gate. In: Sergienko, A., Pascazio, S., Villoresi, P. (eds) Quantum Communication and Quantum Networking. QuantumComm 2009. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 36. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11731-2_25
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DOI: https://doi.org/10.1007/978-3-642-11731-2_25
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-11730-5
Online ISBN: 978-3-642-11731-2
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