444 citations · 985 across the 30 of their papers we have counts for
5 papers · 2 filters
Sequential measurements: Busch-Gleason theorem and its applications
Kieran Flatt, Stephen M. Barnett, Sarah Croke
Probabilities enter quantum mechanics via Born's rule, the uniqueness of which was proven by Gleason. Busch subsequently relaxed the assumptions of this proof, expanding its domain…
Optimal sequential measurements for bi-partite state discrimination
Sarah Croke, Stephen M. Barnett, Graeme Weir
State discrimination is a useful test problem with which to clarify the power and limitations of different classes of measurement. We consider the problem of discriminating between…
Optimal discrimination of single-qubit mixed states
Graeme Weir, Stephen M. Barnett, Sarah Croke
We consider the problem of minimum-error quantum state discrimination for single-qubit mixed states. We present a method which uses the Helstrom conditions constructively and analy…
Proposed optical realisation of a two photon, four-qubit entangled state
Atirach Ritboon, Sarah Croke, Stephen M. Barnett
The four-qubit states , exhibiting genuinely multi-partite entanglement have been shown to have many interesting properties and have been suggested for novel a…
Difficulty of distinguishing product states locally
Sarah Croke, Stephen M Barnett
Non-locality without entanglement is a rather counter-intuitive phenomenon in which information may be encoded entirely in product (unentangled) states of composite quantum systems…