Measurement of Geometric Phase for Mixed States Using Single Photon Interferometry
Measurement of Geometric Phase for Mixed States Using Single Photon Interferometry
Geometric phase may enable inherently fault-tolerant quantum computation. However, due to potential decoherence effects, it is important to understand how such phases arise for mixed input states. We report the first experiment to measure mixed-state geometric phases in optics, using a Mach-Zehnder interferometer, and polarization mixed states that are produced …