Related Experiment Video
Updated: May 3, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Dynamical Casimir emission from polariton condensates
Selma Koghee1, Michiel Wouters1
1TQC, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Wilrijk, Belgium.
Abstract:
We study theoretically the dynamical Casimir effect in an exciton-polariton condensate that is suddenly created by an ultrashort laser pulse at normal incidence. As a consequence of the abrupt change of the quantum vacuum, Bogoliubov excitations are generated. The subsequent evolution, governed by polariton interactions and losses, is studied within a linearized truncated Wigner approximation. We focus in particular on the momentum distribution and spatial coherence. The limiting behavior at large and small momenta is determined analytically. A simple scaling relation for the final condensate depletion as a function of the system parameters is found and the correlation length is shown to depend linearly on the condensate depletion.
More Related Videos
Related Concept Videos
Potential Due to a Polarized Object
Atomic Nuclei: Nuclear Relaxation Processes
Spin–Spin Coupling Constant: Overview
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
The de Broglie Wavelength
Induced Electric Dipoles
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Dielectric Polarization in a Capacitor

