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- STEPHEN D. BARTLETT
- School of Physics, The University of Sydney, New South Wales 2006, Australia
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- TERRY RUDOLPH
- Optics Section, Blackett Laboratory, Imperial College, London, London SW7 2BW, United Kingdom
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- ROBERT W. SPEKKENS
- Perimeter Institute for Theoretical Physics, 31 Caroline St. N, Waterloo, Ontario N2L 2Y5, Canada
書誌事項
- 公開日
- 2006-02
- DOI
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- 10.1142/s0219749906001591
- 公開者
- World Scientific Pub Co Pte Lt
この論文をさがす
説明
<jats:p> A controversy that has arisen many times over in disparate contexts is whether quantum coherences between eigenstates of certain quantities are fact or fiction. We present a pedagogical introduction to the debate in the form of a hypothetical dialogue between proponents from each of the two camps: a factist and a fictionist. A resolution of the debate can be achieved, we argue, by recognizing that quantum states do not only contain information about the intrinsic properties of a system but about its extrinsic properties as well, that is, about its relation to other systems external to it. Specifically, the coherent quantum state of the factist is the appropriate description of the relation of the system to one reference frame, while the incoherent quantum state of the fictionist is the appropriate description of the relation of the system to another, uncorrelated, reference frame. The two views, we conclude, are alternative but equally valid paradigms of description. </jats:p>
収録刊行物
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- International Journal of Quantum Information
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International Journal of Quantum Information 04 (01), 17-43, 2006-02
World Scientific Pub Co Pte Lt
