Gravitational-wave detection beyond the standard quantum limit through EPR entanglement

Dr. Yiqiu Ma (host Krawczynski), Caltech
October 13, 2017 at 2:15 pm
241 Compton
Event Description 

The sensitivity of advanced gravitational-wave is limited by Standard Quantum Limit. To surpass this detection limit, methods for a broadband suppression of quantum noise is necessary. In this talk, after a brief introduction about quantum noise physics in gravitational wave detectors, we will show that this task can be done by exploiting Einstein–Podolsky–Rosen-entangled light. Harnessing their mutual quantum correlations and the difference in the way each beam propagates in the interferometer, the quantum noise can be engineered in a required manner. Our proposal is appropriate for all future gravitational-wave detectors for achieving sensitivities beyond the standard quantum limit.

Joint Astrophysics and Quantum Information & Materials Seminars

Coffee: 2:00 pm, 241 Compton