Physics Department Colloquia (October 17 through December 31) Tuesday, October 21 3:30 PM K. Perez Colloquium: Probing the Dark Universe with X-ray Optics Tuesday, October 28 3:30 PM L. Fu Colloquium: Electrons in Pairs and Fractions: New Phases in 2D Quantum Materials Tuesday, November 4 3:30 PM C. Hill Colloquium: High-Precision CMB Power Spectra and Cosmological Constraints from the Atacama Cosmology Telescope Tuesday, November 11 3:30 PM K. Kechedzhi Colloquium: Towards practical quantum simulation with quantum echo Tuesday, November 18 3:30 PM N. Gedik Colloquium: Capturing light induced phase transitions with femtosecond movies Tuesday, November 25 All Day Colloquium Rescheduled for February - Stay tuned Tuesday, December 2 3:30 PM L. Kewley Colloquium: A new vision for the Center for Astrophysics | Harvard & Smithsonian