Quantum superposition and entanglement of mesoscopic plasmons
arXiv:quant-ph/0512022 · doi:10.1088/1367-2630/8/1/013
Abstract
Quantum 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.
5 pages, 6 figures
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Cited by in corpus (18)
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- Quantum theory of spontaneous and stimulated emission of surface plasmons
- Quantum Statistics of Surface Plasmon Polaritons in Metallic Stripe Waveguides
- Observation of quantum interference in the plasmonic Hong-Ou-Mandel effect
- Single-photon excitation of surface plasmon polaritons
- Long-range surface plasmon polariton excitation at the quantum level
- Quantum plasmonics with a metal nanoparticle array
- Real-space Hopfield diagonalization of inhomogeneous dispersive media
- Quantum plasmonic excitation in graphene and robust-to-loss propagation
- Quantum theory of surface plasmon polariton scattering
- Quantum plasmonics: second-order coherence of surface plasmons launched by quantum emitters into a metallic film
- Quantitative aspects of entanglement in the optically driven quantum dots
- Quantum entanglement based on surface phonon polaritons in condensed matter systems
- Spontaneous emission of radiation by metallic electrons in the presence of electromagnetic fields of surface plasmon oscillations
- Probing Cooper Pairs with Franson Interferometry
- On-demand continuous-variable quantum entanglement source for integrated circuits
- Quantum random number generation using an on-chip nanowire plasmonic waveguide
- Quantum Tomography of the Photon-Plasmon Conversion Process in a Metal Hole Array