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Quantum teleportation by particle-hole annihilation in the Fermi sea

C. W. J. Beenakker·M. Kindermann
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Abstract

A tunnel barrier in a degenerate electron gas was recently discovered as a source of entangled particle-hole excitations. The entanglement is produced by elastic tunneling events, without requiring electron-electron interactions. Here we investigate the inverse process, the annihilation of an electron and a hole by elastic scattering. We find that this process leads to teleportation of the (unknown) state of the annihilated electron to a second, distant electron -- if the latter was previously entangled with the annihilated hole. We propose an experiment, involving low-frequency noise measurements on a two-dimensional electron gas in a high magnetic field, to detect teleportation of electrons and holes in the two lowest Landau levels.

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C. W. J. Beenakker, M. Kindermann. 2017-12-05. Quantum teleportation by particle-hole annihilation in the Fermi sea. https://doi.org/10.1103/physrevlett.92.056801

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