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Letter

Nature Physics 3, 534–537 (1 August 2007) | doi:10.1038/nphys627

Controlled dephasing of electrons by non-gaussian shot noise

Izhar Neder , Florian Marquardt , Moty Heiblum , Diana Mahalu & Vladimir Umansky

In a |[lsquo]|controlled dephasing|[rsquo]| experiment, an interferometer loses its coherence owing to entanglement of the interfering electron with a controlled quantum system, which effectively is equivalent to path detection. In previous experiments, only partial dephasing was achieved owing to weak interactions between many detector electrons and the interfering electron, leading to a gaussian-phase randomizing process.