Uncertainty characteristics of generalized quantum measurements
Physical Review A. Atomic, Molecular, and Optical Physics Volume 67 Issue 2
Page 022106-1-022106-7
published_at 2003-02-13
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| File | |
| Title ( eng ) |
Uncertainty characteristics of generalized quantum measurements
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| Creator | |
| Source Title |
Physical Review A. Atomic, Molecular, and Optical Physics
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| Volume | 67 |
| Issue | 2 |
| Start Page | 022106-1 |
| End Page | 022106-7 |
| Abstract |
The effects of any quantum measurement can be described by a collection of measurement operators {Mˆ m} acting on the quantum state of the measured system. However, the Hilbert space formalism tends to obscure the relationship between the measurement results and the physical properties of the measured system. In this paper, a characterization of measurement operators in terms of measurement resolution and disturbance is developed. It is then possible to formulate uncertainty relations for the measurement process that are valid for arbitrary input states. The motivation of these concepts is explained from a quantum communication viewpoint. It is shown that the intuitive interpretation of uncertainty as a relation between measurement resolution and disturbance provides a valid description of measurement back action. Possible applications to quantum cryptography, quantum cloning, and teleportation are discussed.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2003-02-13 |
| Rights |
Copyright (c) 2003 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 1094-1622
[DOI] 10.1103/PhysRevA.67.022106
[NCID] AA10764867
[DOI] http://dx.doi.org/10.1103/PhysRevA.67.022106
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