Unambiguous discrimination of nonorthogonal entangled quantum states in cavity QED

Publication date: Available online 10 July 2019Source: Physics Letters AAuthor(s): R.J. de Assis, J.S. Sales, N.G. de AlmeidaAbstractIn this work we propose a scheme in the context of superconducting cavities to unambiguously discriminate non-orthogonal quantum field states when one of them is one of the four Bell states. The present work, which generalizes an earlier proposal [1] dealing with non-entangled states, also makes use of a single high Q cavity, a sample of three-level atoms, Ramsey zones and selective detectors, thus consisting of an oversimplification from the experimental view.

Source: Physics Letters A - July 12, 2019 Category: Physics Source Type: research