Direct measurement of nonlinear properties of bipartite quantum states

Conference item

Nonlinear properties of quantum states, such as entropy or entanglement, quantify important physical resources and are frequently used in quantum information science. They are usually calculated from a full description of a quantum state, even though they depend only on a small number of parameters that specify the state. Here we extract a nonlocal and a nonlinear quantity, namely the Renyi entropy, from local measurements on two pairs of polarization entangled photons. We also introduce a "p...

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Authors: Bovino, F; Castagnoli, G; Ekert, A; Alves, C; Horodecki, P

• Publication status: Published
• Host title: OPEN SYSTEMS and INFORMATION DYNAMICS
• Volume: 13
• Issue: 3
• Pages: 281-289
• Publication date: 2006-09-01
• DOI: 10.1007/s11080-006-9008-0
• EISSN: 1793-7191
• ISSN: 1230-1612