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Q: Fachverband Quantenoptik und Photonik

Q 33: Quantum information: Concepts and methods II

Q 33.5: Vortrag

Dienstag, 19. März 2013, 15:00–15:15, E 214

Quantum optical state reconstruction using weak values — •Joachim Fischbach and Matthias Freyberger — Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany

Reconstructing the state of a given system is a fundamental problem in quantum mechanics. We show that the special form of weak values, first introduced by Aharonov, Albert, and Vaidman, can be elegantly used to reconstruct the quantum state of a mode of light. Particularly simple reconstruction relations are found for modulus and phase of the wave function. Finally, we present a numerical simulation of a possible experimental setup, that basically consists of a modified eight-port interferometer, and discuss the limitations of the scheme [1].

[1] J. Fischbach and M. Freyberger, Phys. Rev. A 86, 052110 (2012)