Accessible information in combined and sequential quantum measurementson a binary-state signal
- 1 January 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 55 (1) , 22-26
- https://doi.org/10.1103/physreva.55.22
Abstract
The accessible information obtained in combined and sequential quantum measurements is calculated for a binary pure quantum state signal. It is shown that the accessible information obtained in the combined measurement is equal to that obtained in the sequential measurement. The result indicates that the conjecture by Peres and Wootters [Phys. Rev. Lett. 66, 1119 (1991)] is not valid, at least for a binary quantum state signal. Furthermore, the result is compared with that obtained by Brody and Meister [Phys. Rev. Lett. 76, 1 (1996)].Keywords
This publication has 7 references indexed in Scilit:
- Elements of Information TheoryPublished by Wiley ,2001
- Upper bound of the accessible information and lower bound of the Bayes cost in quantum signal-detection processesPhysical Review A, 1996
- Minimum Decision Cost for Quantum EnsemblesPhysical Review Letters, 1996
- Optimal Extraction of Information from Finite Quantum EnsemblesPhysical Review Letters, 1995
- Quantum limits on bosonic communication ratesReviews of Modern Physics, 1994
- Optimal detection of quantum informationPhysical Review Letters, 1991
- Statistical decision theory for quantum systemsJournal of Multivariate Analysis, 1973