Description
Small anisotropies in the Cosmic Microwave Background (CMB) should contain information on quantum fluctuations from the cosmic inflation in the early universe. In particular, the linear polarization anisotropy at degree scales is a key measurement to probe the signal of primordial gravitational waves. One of the challenges for ground-based CMB experiments is the mitigation of the instrumental low-frequency noise caused by atmospheric fluctuations. Polarization modulation by a rotating half-wave plate is a promising technique to mitigate this noise.
Speaker
Satoru Takakura
(The University of Tokyo)