Measuring errors in single-qubit rotations by pulsed electron paramagnetic resonance

Journal Article · Sat Jan 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.012332· OSTI ID:20650214

Morton, John J.L.; Porfyrakis, Kyriakos; Briggs, G Andrew D. ^[1]; Tyryshkin, Alexei M; Lyon, S A ^[2]; Ardavan, Arzhang ^[1]

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1. Department of Materials, Oxford University, Oxford OX1 3PH (United Kingdom)
2. Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544 (United States)

The ability to measure and reduce systematic errors in single-qubit logic gates is crucial when evaluating quantum computing implementations. We describe pulsed electron paramagnetic resonance (EPR) sequences that can be used to measure precisely even small systematic errors in rotations of electron-spin-based qubits. Using these sequences we obtain values for errors in the rotation angle and axis for single-qubit rotations using a commercial EPR spectrometer. We conclude that errors in qubit operations by pulsed EPR are not limiting factors in the implementation of electron-spin-based quantum computers.

• OSTI ID: 20650214
• Journal Information: Physical Review. A, Vol. 71, Issue 1; Other Information: DOI: 10.1103/PhysRevA.71.012332; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ELECTRON SPIN RESONANCE
ELECTRONS
EPR SPECTROMETERS
ERRORS
IMPLEMENTATION
INFORMATION THEORY
PARAMAGNETISM
QUANTUM MECHANICS
ROTATION
SPIN