Nonlocal single particle steering generated through single particle entanglement

Entanglement in single-particle systems

We address some of the most commonly raised questions about entanglement, especially with regard to the so-called occupation number entanglement. To answer unambiguously whether entanglement can exist in a one-atom delocalized state, we propose an experiment capable of showing violations of Bell’s inequality using only this state and local operations. We review previous discussions for one-phot...

Entanglement Witnesses from Single-Particle Interference

We describe a general method of realizing entanglement witnesses in terms of the interference pattern of a single quantum probe. After outlining the principle, we discuss specific realizations both with electrons in mesoscopic Aharonov-Bohm rings and with photons in standard Young’s double-slit or coherent-backscattering interferometers. How much information can be gained about separate parts o...

Quantum teleportation and Bell’s inequality using single-particle entanglement

A single-particle entangled state can be generated by illuminating a beam splitter with a single photon. Quantum teleportation utilizing such a single-particle entangled state can be successfully achieved with a simple setup consisting only of linear optical devices such as beam splitters and phase shifters. Application of the locality assumption to a single-particle entangled state leads to Be...

Plasmonic polymers unraveled through single particle spectroscopy.

Plasmonic polymers are quasi one-dimensional assemblies of nanoparticles whose optical responses are governed by near-field coupling of localized surface plasmons. Through single particle extinction spectroscopy correlated with electron microscopy, we reveal the effect of the composition of the repeat unit, the chain length, and extent of disorder on the energies, intensities, and line shapes o...

Anisotropic single-particle dissipative particle dynamics model