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An experimental observation of geometric phases for mixed states using NMR interferometry
Other titles
Observation of geometric phases for mixed states using NMR interferometry [Published]
Citation
Du, J., Zou, P., Shi, M., Kwek, L. C., Pan, J.-W., Oh, C. H., Ekert, A., Oi, D. K. L., & Ericsson, M. (2003). Observation of geometric phases for mixed states using NMR interferometry. Physical Review Letters, 91(10), Article 100403. https://doi.org/10.1103/PhysRevLett.91.100403
Author
Du, Jiangfeng
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Zou, Ping
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Shi, Mingjun
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Pan, Jian-Wei
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Oh, Choo Hiap
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Ekert, Artur K.
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Oi, Daniel K. L.
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Ericsson, Marie
Abstract
Examples of geometric phases abound in many areas of physics. They offer both fundamental insights into many physical phenomena and lead to interesting practical implementations. One of them, as indicated recently, might be an inherently fault-tolerant quantum computation. This, however, requires to deal with geometric phases in the presence of noise and interactions between different physical subsystems. Despite the wealth of literature on the subject of geometric phases very little is known about this very important case. Here we report the first experimental study of geometric phases for mixed quantum states. We show how different they are from the well understood, noiseless, pure-state case.
Date Issued
2003
Publisher
American Physical Society
Journal
Physical Review Letters