Measuring the Density Matrix by Local Addressing

Details Measuring the Density Matrix by Local Addressing Measuring the Density Matrix by Local Addressing

2003-09-08

arxiv.org/abs/quant-ph/0309067v1

Phys. Rev. A 64, 065401 (2001)

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.64.065401

We introduce a procedure to measure the density matrix of a material system. The density matrix is addressed locally in this scheme by applying a sequence of delayed light pulses. The procedure is based on the stimulated Raman adiabatic passage (STIRAP) technique. It is shown that a series of population measurements on the target state of the population transfer process yields unambiguous information about the populations and coherences of the addressed states, which therefore can be determined.

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