Quantum superposition and entanglement of mesoscopic plasmons

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dc.creatorFasel, Sylvain
dc.creatorHalder, Matthaeus
dc.creatorGisin, Nicolas
dc.creatorZbinden, Hugo
dc.date2005-12-02
dc.date.accessioned2026-07-07T06:56:31Z
dc.date.available2026-07-07T06:56:31Z
dc.descriptionQuantum superpositions and entanglement are at the heart of the quantum information science. There have been only a few investigations of these phenomena at the mesoscopic level, despite the fact that these systems are promising for quantum state storage and processing. Here we present two novel experiments with surface plasmons propagating on cm-long metallic stripe waveguides. We demonstrate that two plasmons can be entangled at remote places. In addition, we create a single plasmon in a temporal superposition state: it exists in a superposition of two widely separated moments. These quantum states, created using photons at telecom wavelength, are collectively held by a mesoscopic number of electrons coding a single quantum bit of information; They are shown to be very robust against decoherence.
dc.description5 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0512022
dc.identifierhttp://arxiv.org/abs/quant-ph/0512022
dc.identifierNew J. Phys. 8, 13 (2006)
dc.identifierdoi:10.1088/1367-2630/8/1/013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/106667
dc.subjectQuantum Physics
dc.titleQuantum superposition and entanglement of mesoscopic plasmons
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