Speaker
Prof.
James D. Franson
(University of Maryland, USA)
Description
Schrodinger cat states, which are quantum-mechanical superpositions of macroscopic states, are of fundamental interest in studying the boundary between the quantum and classical worlds. I will discuss a method for generating phase-entangled macroscopic coherent states using weak optical nonlinear phase shifts. These states can produce nonlocal interference effects that violate Bell’s inequality. They are also relatively robust against photon loss and decoherence, which may have practical applications in quantum cryptography.
