Experimental realization of an optical entanglement filter
Ryo Okamoto, Jeremy L. O’Brien, Holger Friedrich Hofmann, Tomohisa Nagata, Keiji Sasaki, Shigeki Takeuchi · 2009
The ability to filter quantum states is a key capability in quantum information science and technology, where one-qubit filters, or polarizers, have found wide application. Filtering on the basis of entanglement requires extension to multi-qubit filters with qubit-qubit interactions. Such devices have many important applications to quantum technologies.