TY - JOUR
T1 - Unambiguous discrimination between linearly independent quantum states
AU - Chefles, A.
PY - 1998/3/16
Y1 - 1998/3/16
N2 - The theory of generalised measurements is used to examine the problem of discriminating unambiguously between non-orthogonal pure quantum states. Measurements of this type never give erroneous results, although, in general, there will be a non-zero probability of a result being inconclusive. It is shown that only linearly independent states can be unambiguously discriminated. In addition to examining the general properties of such measurements, we discuss their application to entanglement concentration.
AB - The theory of generalised measurements is used to examine the problem of discriminating unambiguously between non-orthogonal pure quantum states. Measurements of this type never give erroneous results, although, in general, there will be a non-zero probability of a result being inconclusive. It is shown that only linearly independent states can be unambiguously discriminated. In addition to examining the general properties of such measurements, we discuss their application to entanglement concentration.
KW - quantum states
KW - quantum
KW - physics
KW - probability
UR - http://arxiv.org/PS_cache/quant-ph/pdf/9807/9807022v1.pdf
UR - http://dx.doi/org/10.1016/S0375-9601(98)00064-4
U2 - 10.1016/S0375-9601(98)00064-4
DO - 10.1016/S0375-9601(98)00064-4
M3 - Article
SN - 0375-9601
VL - 239
SP - 339
EP - 347
JO - Physics Letters A
JF - Physics Letters A
IS - 6
ER -