323 citations · 641 across the 36 of their papers we have counts for
Showing 2004 · quant-phShow all
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quant-ph2004★ 1 cited
Instruments and mutual entropies in quantum information
Alberto Barchielli, Giancarlo Lupieri
General quantum measurements are represented by instruments. In this paper the mathematical formalization is given of the idea that an instrument is a channel which accepts a quant…
quant-ph2004★ 19 cited
Instruments and channels in quantum information theory
Alberto Barchielli, Giancarlo Lupieri
While a positive operator valued measure gives the probabilities in a quantum measurement, an instrument gives both the probabilities and the a posteriori states. By interpreting t…
quant-ph2004★ 2 cited
Instrumental processes, entropies, information in quantum continual measurements
Alberto Barchielli, Giancarlo Lupieri
In this paper we will give a short presentation of the quantum Levy-Khinchin formula and of the formulation of quantum continual measurements based on stochastic differential equat…