Abstract
| Language | English |
|---|---|
| Pages | 10097-10103 |
| Number of pages | 6 |
| Journal | Journal of Physics A: Mathematical and Theoretical |
| Volume | 31 |
| Issue number | 50 |
| DOIs | |
| Publication status | Published - 1998 |
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Keywords
- quantum state separation
- exact cloning
- physics
- quantum states
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Quantum state separation, unambiguous discrimination and exact cloning. / Chefles, A.; Barnett, S.M.
In: Journal of Physics A: Mathematical and Theoretical, Vol. 31, No. 50, 1998, p. 10097-10103.Research output: Contribution to journal › Article
TY - JOUR
T1 - Quantum state separation, unambiguous discrimination and exact cloning
AU - Chefles, A.
AU - Barnett, S.M.
PY - 1998
Y1 - 1998
N2 - Unambiguous discrimination and exact cloning reduce the square-overlap between quantum states, exemplifying the more general type of procedure we term state separation. We obtain the maximum probability with which two equiprobable quantum states can be separated by an arbitrary degree, and find that the established bounds on the success probabilities for discrimination and cloning are special cases of this general bound. The latter also gives the maximum probability of successfully producing N exact copies of a quantum system whose state is chosen secretly from a known pair, given M initial realizations of the state, where N > M. We also discuss the relationship between this bound and that on unambiguous state discrimination.
AB - Unambiguous discrimination and exact cloning reduce the square-overlap between quantum states, exemplifying the more general type of procedure we term state separation. We obtain the maximum probability with which two equiprobable quantum states can be separated by an arbitrary degree, and find that the established bounds on the success probabilities for discrimination and cloning are special cases of this general bound. The latter also gives the maximum probability of successfully producing N exact copies of a quantum system whose state is chosen secretly from a known pair, given M initial realizations of the state, where N > M. We also discuss the relationship between this bound and that on unambiguous state discrimination.
KW - quantum state separation
KW - exact cloning
KW - physics
KW - quantum states
UR - http://arxiv.org/PS_cache/quant-ph/pdf/9808/9808018v1.pdf
UR - http://dx.doi.org/10.1088/0305-4470/31/50/007
U2 - 10.1088/0305-4470/31/50/007
DO - 10.1088/0305-4470/31/50/007
M3 - Article
VL - 31
SP - 10097
EP - 10103
JO - Journal of Physics A: Mathematical and Theoretical
T2 - Journal of Physics A: Mathematical and Theoretical
JF - Journal of Physics A: Mathematical and Theoretical
SN - 0305-4470
IS - 50
ER -