360 citations · 1.5k across the 29 of their papers we have counts for
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Fidelity of Gaussian channels
Carlton M. Caves, Krzysztof Wodkiewicz
A noisy Gaussian channel is defined as a channel in which an input field mode is subjected to random Gaussian displacements in phase space. We introduce the quantum fidelity of a G…
Violation of Bell's inequality for continuous variables
L. Praxmeyer, B. -G. Englert, K. Wodkiewicz
We construct a wide class of bounded continuous variables observables that lead to violations of Bell inequalities for the EPR state and give an intuitive Wigner function explanati…
Bloch Equations and Completely Positive Maps
Sonja Daffer, Krzysztof Wodkiewicz, John K. McIver
The phenomenological dissipation of the Bloch equations is reexamined in the context of completely positive maps. Such maps occur if the dissipation arises from a reduction of a un…
Classical phase-space descriptions of continuous-variable teleportation
Carlton M. Caves, Krzysztof Wodkiewicz
The nonnegative Wigner function of all quantum states involved in teleportation of Gaussian states using the standard continuous-variable teleportation protocol means that there is…