Generalized quantum state discrimination problems
نویسندگان
چکیده
منابع مشابه
Characterization of quantum computable decision problems by state discrimination
One advantage of quantum algorithms over classical computation is the possibility to spread out, process, analyse and extract information in multipartite configurations in coherent superpositions of classical states. This will be discussed in terms of quantum state identification problems based on a proper partitioning of mutually orthogonal sets of states. The question arises whether or not it...
متن کامل-symmetric quantum state discrimination
1Department of Physics, King’s College London, Strand, LondonWC2R 1LS, UK 2Mathematical Sciences, Brunel University, Uxbridge UB8 3PH, UK 3Physics Department, University of Chicago, Chicago, IL 60637, USA 4Helmholtz-Center Dresden-Rossendorf, PO Box 51 01 19, 01314 Dresden, Germany 5Department of Physics, Renmin University of China, Beijing 100872, People’s Republic of China 6Tomsk State Univer...
متن کاملQuantum state discrimination
It is a fundamental consequence of the superposition principle for quantum states that there must exist non-orthogonal states, that is states that, although different, have a non-zero overlap. This finite overlap means that there is no way of determining with certainty in which of two such states a given physical system has been prepared. We review the various strategies that have been devised ...
متن کاملInformation-Disturbance Tradeoff in Quantum State Discrimination
When discriminating between two pure quantum states, there exists a quantitative tradeoff between the information retrieved by the measurement and the disturbance caused on the unknown state. We derive the optimal tradeoff and provide the corresponding quantummeasurement. Such an optimal measurement smoothly interpolates between the two limiting cases of maximal information extraction and no me...
متن کاملStructure of minimum-error quantum state discrimination
Distinguishing different quantum states is a fundamental task having practical applications in information processing. Despite the effort devoted so far, however, strategies for optimal discrimination are known only for specific examples. In this paper we consider the problem of minimum-error quantum state discrimination where one attempts to minimize the average error. We show the general stru...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2015
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.91.052304