19 citations · 29 across the 2 of their papers we have counts for
4 papers · 1 filter
Perfect transfer of multiple excitations in quantum networks
T. Brougham, G. M. Nikolopoulos, I. Jex
We present a general formalism to the problem of perfect state-transfer (PST), where the state involves multiple excitations of the quantum network. A key feature of our formalism…
Estimating the expectation values of spin 1/2 observables with finite resources
Thomas Brougham, Erika Andersson
We examine the problem of estimating the expectation values of two observables when we have a finite number of copies of an unknown qubit state. Specifically we examine whether it…
Maximum observable correlation for a bipartite quantum system
Michael J. W. Hall, Erika Andersson, Thomas Brougham
The maximum observable correlation between the two components of a bipartite quantum system is a property of the joint density operator, and is achieved by making particular measur…
Cloning and Joint Measurements of Incompatible Components of Spin
Thomas Brougham, Erika Andersson, Stephen M. Barnett
A joint measurement of two observables is a {\it simultaneous} measurement of both quantities upon the {\it same} quantum system. When two quantum-mechanical observables do not com…