Extracting joint weak values with local, single-particle measurements

Details Extracting joint weak values with local, single-particle measurements Extracting joint weak values with local, single-particle measurements

2003-10-17

arxiv.org/abs/quant-ph/0310113v1

Physical Review Letters 92, 130402 (2004)

Physics

Quantum Physics

6 pages

Scientific paper

10.1103/PhysRevLett.92.130402

Weak measurement is a new technique which allows one to describe the evolution of postselected quantum systems. It appears to be useful for resolving a variety of thorny quantum paradoxes, particularly when used to study properties of pairs of particles. Unfortunately, such nonlocal or joint observables often prove difficult to measure weakly in practice (for instance, in optics -- a common testing ground for this technique -- strong photon-photon interactions would be needed). Here we derive a general, experimentally feasible, method for extracting these values from correlations between single-particle observables.

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