Strong micro-macro entanglement from a weak cross-Kerr nonlinearity [PDF]
We study the entanglement generated by a weak cross-Kerr nonlinearity between two initial coherent states, one of which has an amplitude close to the single-photon level, while the other one is macroscopic. We show that strong micro-macro entanglement is
Kaviani, Hamidreza +4 more
core +2 more sources
Single photons versus coherent state input in waveguide quantum electrodynamics: light scattering, Kerr and cross-Kerr effect [PDF]
While the theoretical studies in waveguide quantum electrodynamics predominate with single-photon and two-photon Fock state (photon number states) input, the experiments are primarily carried out using a faint coherent light.
Roy, Dibyendu, Vinu, Athul
core +4 more sources
Spectrum of a micromaser with Kerr nonlinearity [PDF]
We analyse the spectrum of a micromaser with a Kerr-type nonlinearity in its cavity. We show that the intracavity Kerr nonlinearity has significant effects on the spectrum leading to narrowing of the subnatural linewidth and frequency ...
Deb, Bimalendu, Ray, Deb Shankar
core +1 more source
Observation of a large, resonant, cross-Kerr nonlinearity in a cold Rydberg gas
We report the experimental observation of a cross-Kerr nonlinearity in a free-space medium based on resonantly excited, interacting Rydberg atoms and electromagnetically induced transparency.
Josiah Sinclair +4 more
doaj +1 more source
Entanglement transfer via cross-Kerr nonlinearity
We propose a scheme for realizing entanglement transfer based on the cross-Kerr nonlinear interaction between field-modes. By using this scheme the entanglement can be transferred from the field-states with discrete variables to the field-states with continuous variables.
null Yang Jian +4 more
openaire +1 more source
“Fast” optical Kerr gate with “slow” nonlinearity [PDF]
We describe a “fast” optical Kerr gate which can work using nonlinear material with “slow” Kerr nonlinearity. It uses two delayed opening pulses polarized in such a way that the nonlinearity created by the first one is exactly compensated by that of the ...
GADONAS, Roaldas +2 more
core +1 more source
Entanglement concentration for arbitrary four-particle linear cluster states
Cluster states, whose model are a remarkably rich structure in measurement-based quantum computation, hold high degree of entanglement, while entanglement is very fragile during the process of transmission because of the inevitable interaction with the ...
Ting-Ting Song +2 more
doaj +1 more source
Enhancing Kerr nonlinearity via quantum interference from incoherent pumping [PDF]
The effect of quantum interference from incoherent pump field on the Kerr nonlinearity of V- and Lambda-type three-level systems is investigated. It is found that enhanced Kerr nonlinearity can be obtained via quantum interference of incoherent pump ...
Seifoory, H. +4 more
core +1 more source
Complete analysis of the maximally hyperentangled state via the weak cross-Kerr nonlinearity [PDF]
We present a simple method for the complete analysis of maximally hyperentangled state in polarization and spatial-mode degrees of freedom assisted by the weak cross-Kerr nonlinearity.
Zeng, Zhi
core +4 more sources
Cross-Kerr nonlinearity in the surface plasmon polariton waves generated at the interface of graphene and gain medium [PDF]
Surface plasmon polariton (SPP) waves generated at the interface of graphene and a gain-assisted medium due to the effective Kerr nonlinear variation of the dielectric function are controlled and modified. The gain doublet in the SPP waves is measured at
M. S. Abdul Jabar +3 more
core +1 more source

