Distinguishing n Hamiltonians on C^n by a single measurement

Details Distinguishing n Hamiltonians on C^n by a single measurement Distinguishing n Hamiltonians on C^n by a single measurement

2001-03-06

arxiv.org/abs/quant-ph/0103021v1

Phys. Rev. A 65, 022302, 2002

Physics

Quantum Physics

4 pages, Revtex

Scientific paper

10.1103/PhysRevA.65.022303

If an experimentalist wants to decide which one of n possible Hamiltonians
acting on an n dimensional Hilbert space is present, he can conjugate the time
evolution by an appropriate sequence of known unitary transformations in such a
way that the different Hamiltonians result in mutual orthogonal final states.
We present a general scheme providing such a sequence.

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