Practical measurement of joint weak values and their connection to the annihilation operator

Details Practical measurement of joint weak values and their connection to the annihilation operator Practical measurement of joint weak values and their connection to the annihilation operator

2005-01-13

arxiv.org/abs/quant-ph/0501072v1

Physics Letters A 334 (2005) 337-344.

Physics

Quantum Physics

13 pages, accepted to Physics Letters A (Dec. 2004)

Scientific paper

10.1016/j.physleta.2004.11.037

Weak measurements are a new tool for characterizing post-selected quantum systems during their evolution. Weak measurement was originally formulated in terms of von Neumann interactions which are practically available for only the simplest single-particle observables. In the present work, we extend and greatly simplify a recent, experimentally feasible, reformulation of weak measurement for multiparticle observables [Resch and Steinberg (2004, Phys. Rev. Lett., 92, 130402)]. We also show that the resulting ``joint weak values'' take on a particularly elegant form when expressed in terms of annihilation operators.

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