activity
20022005
most citedCompletely positive maps with memory

199 citations · 294 across the 5 of their papers we have counts for

collaborators

5 papers

quant-ph2005★ 10 cited

Generating optimal states for a homodyne Bell test

Sonja Daffer, Peter L. Knight

We present a protocol that produces a conditionally prepared state that can be used for a Bell test based on homodyne detection. Based on the results of Munro [PRA 1999], the state…

quant-ph2004★ 9 cited

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…

quant-ph2003★ 199 cited

Completely positive maps with memory

Sonja Daffer, Krzysztof Wodkiewicz, James D. Cresser +1

The prevailing description for dissipative quantum dynamics is given by the Lindblad form of a Markovian master equation, used under the assumption that memory effects are negligib…

quant-ph2003★ 13 cited

Nonlocality of Two-Mode Squeezing with Internal Noise

Sonja Daffer, Krzysztof Wodkiewicz, John K. McIver

We examine the quantum states produced through parametric amplification with internal quantum noise. The internal diffusion arises by coupling both modes of light to a reservoir fo…

quant-ph2002★ 63 cited

Quantum Markov Channels for Qubits

Sonja Daffer, Krzysztof Wodkiewicz, John K. McIver

We examine stochastic maps in the context of quantum optics. Making use of the master equation, the damping basis, and the Bloch picture we calculate a non-unital, completely posit…