Publikation: Coherent State Evolution in a Superconducting Qubit from Partial-Collapse Measurement
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2006
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Katz, Nadav
Ansmann, M.
Bialczak, Radoslaw C.
Lucero, Erik
McDermott, R.
Neeley, Matthew
Steffen, Matthias
Cleland, Andrew N.
Martinis, John M.
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Science. 2006, 312(5779), pp. 1498-1500. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1126475
Zusammenfassung
Measurement is one of the fundamental building blocks of quantum-information processing systems. Partial measurement, where full wavefunction collapse is not the only outcome, provides a detailed test of the measurement process. We introduce quantum-state tomography in a superconducting qubit that exhibits high-fidelity single-shot measurement. For the two probabilistic outcomes of partial measurement, we find either a full collapse or a coherent yet nonunitary evolution of the state. This latter behavior explicitly confirms modern quantum-measurement theory and may prove important for error-correction algorithms in quantum computation.
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KATZ, Nadav, M. ANSMANN, Radoslaw C. BIALCZAK, Erik LUCERO, R. MCDERMOTT, Matthew NEELEY, Matthias STEFFEN, Eva M. WEIG, Andrew N. CLELAND, John M. MARTINIS, Alexander N. KOROTKOV, 2006. Coherent State Evolution in a Superconducting Qubit from Partial-Collapse Measurement. In: Science. 2006, 312(5779), pp. 1498-1500. ISSN 0036-8075. eISSN 1095-9203. Available under: doi: 10.1126/science.1126475BibTex
@article{Katz2006-06-09Coher-25277,
year={2006},
doi={10.1126/science.1126475},
title={Coherent State Evolution in a Superconducting Qubit from Partial-Collapse Measurement},
number={5779},
volume={312},
issn={0036-8075},
journal={Science},
pages={1498--1500},
author={Katz, Nadav and Ansmann, M. and Bialczak, Radoslaw C. and Lucero, Erik and McDermott, R. and Neeley, Matthew and Steffen, Matthias and Weig, Eva M. and Cleland, Andrew N. and Martinis, John M. and Korotkov, Alexander N.}
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