Session C4: Spintronics and Quantum Computing
3:40 PM–4:52 PM, Friday, October 23, 2009
Green Center Room: 211
Chair: Mark Coffey, Colorado School of Mines
Abstract ID: BAPS.2009.4CF.C4.4
Abstract: C4.00004 : Fidelity of Arbitrary Single-Qubit Gates
4:28 PM–4:40 PM
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Abstract 
Authors:
Nathan Steiger
(Brigham Young University)
Peter Pemberton-Ross
(Cambridge University)
Recent work suggests that conservation laws limit the inherent accuracy of gate operations in quantum computing. One way to quantify these limitations is through a gate operation's fidelity. We extend and clarify previous work by Karasawa et al. (J. Phys. A \textbf{42}, 225303, (2009)) for an arbitrary single-qubit gate operation by incorporating the Schr\"{o}dinger form of the uncertainty relation and arrive at a Bloch sphere representation of the gate fidelity. We find that these modifications are non-trivial and could have important ramifications for quantum computing.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2009.4CF.C4.4