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Electronic Hong-Ou-Mandel interferometer for multi-mode entanglement detection

Vittorio Giovannetti·Diego Frustaglia·Fabio Taddei·Rosario Fazio
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Abstract

We show that multi-mode entanglement of electrons in a mesoscopic conductor can be detected by a measurement of the zero-frequency current correlations in an electronic Hong-Ou-Mandel interferometer. By this mean, one can further establish a lower bound to the entanglement of formation of two-electron input states. Our results extend the work of Burkard and Loss [Phys. Rev. Lett. 91, 087903 (2003)] to many channels and provide a way to test the existence of entangled states involving both orbital and spin degrees of freedom.

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Vittorio Giovannetti, Diego Frustaglia, Fabio Taddei, Rosario Fazio. 2008-02-18. Electronic Hong-Ou-Mandel interferometer for multi-mode entanglement detection. https://doi.org/10.1103/physrevb.74.115315

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