Geometric theory of nonlocal two-qubit operations
نویسندگان
چکیده
Jun Zhang, Jiri Vala, Shankar Sastry, and K. Birgitta Whaley Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720 Department of Chemistry and Pitzer Center for Theoretical Chemistry, University of California, Berkeley, California 94720 Mathematical Sciences Research Institute, 1000 Centennial Drive, Berkeley, California 94720 ~Received 21 September 2002; published 18 April 2003!
منابع مشابه
Nonlocal Properties of Two-Qubit Gates and Mixed States, and the Optimization of Quantum Computations
Entanglement of two parts of a quantum system is a nonlocal property unaffected by local manipulations of these parts. It can be described by quantities invariant under local unitary transformations. Here we present, for a system of two qubits, a set of invariants which provides a complete description of nonlocal properties. The set contains 18 real polynomials of the entries of the density mat...
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