a Physics Teaching Section of Basic Course Department, Air Force Early Warning Academy, Wuhan 430019, China;b Department of Physics, Central China Normal University, Wuhan 430079, China
Abstract:
Effects of photon addition on quantum nonlocality of squeezed entangled coherent states for Bell-inequality tests are studied theoretically. By utilizing the method of photon-parity measurement, it is found that photon addition can always increase the degrees of Bell violations within a certain parameter range. A possible scheme for generating photon-added squeezed entangled coherent states is proposed.