Related Experiment Video
Updated: Jun 22, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Parity violation constraints using cosmic microwave background polarization spectra from 2006 and 2007 observations
1Kavli Institute for Particle Astrophysics and Cosmology and Department of Physics, Stanford University, Stanford, California 94305, USA. e2wu@stanford.edu
Abstract:
We constrain parity-violating interactions to the surface of last scattering using spectra from the QUaD experiment's second and third seasons of observations by searching for a possible systematic rotation of the polarization directions of cosmic microwave background photons. We measure the rotation angle due to such a possible "cosmological birefringence" to be 0.55 degrees +/-0.82 degrees (random) +/-0.5 degrees (systematic) using QUaD's 100 and 150 GHz temperature-curl and gradient-curl spectra over the spectra over the multipole range 200
More Related Videos
09:55Troubleshooting and Quality Assurance in Hyperpolarized Xenon Magnetic Resonance Imaging: Tools for High-Quality Image Acquisition
Published on: January 5, 2024
14:18Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
Published on: February 28, 2016
Related Concept Videos
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
Polar Curves
Atomic Emission Spectroscopy: Interference
Group Polarization
Atomic Nuclei: Larmor Precession Frequency
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations