Quantitative wave–particle duality and sensitivity of phase measurements

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Abstract

We approach the quantification theory of the wave–particle duality restricting ourselves to a qubit entangled with its environment. We use the notion of the conditional expectation value and conditional variance to provide an alternative derivation of the well-known “strong” inequality for the which-way knowledge and quantum-erasure visibility.

Keywords

wave–particle duality quantitative duality sensitivity 
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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  1. 1.Joint Laboratory of Optics of Palacký University and Institute of Physics of Academy of Sciences of the Czech RepublicOlomoucCzech Republic

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