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Implementation of generalized measurements with minimal disturbance on a quantum computer
Author(s) -
Decker T.,
Grassl M.
Publication year - 2006
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.200610308
Subject(s) - exploit , homogeneous space , representation (politics) , quantum , disturbance (geology) , computer science , state (computer science) , theoretical computer science , quantum state , algorithm , quantum computer , computer engineering , mathematics , physics , quantum mechanics , computer security , paleontology , geometry , politics , political science , law , biology
We consider the problem of efficiently implementing a generalized measurement on a quantum computer. Using methods from representation theory, we exploit symmetries of the states we want to identify respectively symmetries of the measurement operators. In order to allow the information to be extracted sequentially, the disturbance of the quantum state due to the measurement should be minimal.