Results 21 to 30 of about 24,160 (188)

Entanglement Dynamics Induced by a Squeezed Coherent Cavity Coupled Nonlinearly with a Qubit and Filled with a Kerr-Like Medium

open access: yesEntropy, 2021
An analytical solution for a master equation describing the dynamics of a qubit interacting with a nonlinear Kerr-like cavity through intensity-dependent coupling is established.
Abdel-Baset A. Mohamed, Hichem Eleuch
doaj   +1 more source

Enhancing Third- and Fifth-Order Nonlinearity via Tunneling in Multiple Quantum Dots

open access: yesNanomaterials, 2019
The nonlinearity of semiconductor quantum dots under the condition of low light levels has many important applications. In this study, linear absorption, self-Kerr nonlinearity, fifth-order nonlinearity and cross-Kerr nonlinearity of multiple quantum ...
Si-Cong Tian   +9 more
doaj   +1 more source

Kerr nonlinearity and group velocity dispersion of InGaAs/InP and GaAsSb/InP waveguides in the mid-infrared

open access: yesAPL Photonics, 2023
We report measurements of Kerr nonlinearity and group velocity dispersion in In0.53Ga0.47As/InP and GaAs0.51Sb0.49/InP ridge waveguides in the mid-infrared using four-wave mixing at λ ≈ 5 µm.
Kevin Zhang   +2 more
doaj   +1 more source

Passive CPHASE Gate via Cross-Kerr Nonlinearities [PDF]

open access: yesPhysical Review Letters, 2016
A fundamental and open question is whether cross-Kerr nonlinearities can be used to construct a controlled-phase (CPHASE) gate. Here we propose a gate constructed from a discrete set of atom-mediated cross-Kerr interaction sites with counter-propagating photons. We show that the average gate fidelity $F$ between a CPHASE and our proposed gate increases
Brod, Daniel J., Combes, Joshua
openaire   +3 more sources

Complete hyperentangled state analysis using weak cross-Kerr nonlinearity and auxiliary entanglement

open access: yesNew Journal of Physics, 2020
We present a new method for the complete analysis of hyperentangled Bell state and Greenberger–Horne–Zeilinger state in polarization and spatial-mode degrees of freedom, resorting to weak cross-Kerr nonlinearity and auxiliary frequency entanglement.
Zhi Zeng, Ka-Di Zhu
doaj   +1 more source

Optical Pattern Formation in a Rydberg-Dressed Atomic Gas with Non-Hermitian Potentials

open access: yesPhotonics, 2022
Spontaneous pattern formation from a spatially homogeneous background of nonlinear systems driven out of equilibrium is a widespread phenomenon in nature.
Zeyun Shi   +3 more
doaj   +1 more source

Kerr nonlinearity enhancement by double tunnelling from quantum dot nanostructure

open access: yesResults in Physics, 2016
A model of the dynamical equations of the density matrix describes double tunnelling between double quantum dot (QD) system states, this is to study Kerr nonlinearity in QD structure.
B. Al-Nashy   +2 more
doaj   +1 more source

Spatial solitons in Schrodinger equation with a spatially modulated nonlinearity: Variational approach [PDF]

open access: yesMathematics and Computational Sciences, 2023
In is paper, we have studied the propagation of spatial solitons in the medium with a spatially modulated nonlinearity. Wave equation includes the terms of diffraction and periodic self- focusing.
Mahboubeh Ghalandari
doaj   +1 more source

Scaling laws for soliton pulse compression by cascaded quadratic nonlinearities [PDF]

open access: yes, 2007
We present a detailed study of soliton compression of ultra-short pulses based on phase-mismatched second-harmonic generation (\textit{i.e.}, the cascaded quadratic nonlinearity) in bulk quadratic nonlinear media.
Ashihara   +27 more
core   +2 more sources

Nonlinear quantum optical computing via measurement [PDF]

open access: yes, 2004
We show how the measurement induced model of quantum computation proposed by Raussendorf and Briegel [Phys. Rev. Letts. 86, 5188 (2001)] can be adapted to a nonlinear optical interaction. This optical implementation requires a Kerr nonlinearity, a single
Hutchinson, G. D., Milburn, G. J.
core   +1 more source

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