M Barbieri et al 2009 New J. Phys. 11 093012 doi:10.1088/1367-2630/11/9/093012
M Barbieri1,2,4, M E Goggin1,3, M P Almeida1, B P Lanyon1 and A G White1
Show affiliationsUsing a linear optic quantum gate we perform a variable strength quantum non-demolition measurement, to elucidate the role of which-path knowledge in a complementarity experiment. Specifically, we demonstrate that the entanglement created by the measurement interaction prevents an exhaustive description in terms of complementary wave-like and particle-like behaviour of a single photon in an interferometer.
03.67.Lx Quantum computation architectures and implementations
03.67.Mn Entanglement measures, witnesses, and other characterizations
Issue 9 (September 2009)
Received 1 May 2009
Published 14 September 2009
M Barbieri et al 2009 New J. Phys. 11 093012
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