417 citations · 2.5k across the 29 of their papers we have counts for
29 papers
The Quantum Blackwell Theorem and Minimum Error State Discrimination
Anthony Chefles
A quantum analogue of the famous Blackwell Theorem in classical statistics has recently been proposed. Given two quantum channels A and B, a set of payoff functions have been prove…
Distributed implementation of standard oracle operators
Anthony Chefles
The standard oracle operator corresponding to a function f is a unitary operator that computes this function coherently, i.e. it maintains superpositions. This operator acts on a b…
Unambiguous discrimination among oracle operators
Anthony Chefles, Akira Kitagawa, Masahiro Takeoka +2
We address the problem of unambiguous discrimination among oracle operators. The general theory of unambiguous discrimination among unitary operators is extended with this applicat…
Entanglement quantification with Fisher information
Akira kitagawa, Masahiro Takeoka, Masahide Sasaki +1
We show that the Fisher information associated with entanglement-assisted coding has a monotonic relationship with the logarithmic negativity, an important entanglement measure, fo…
Entanglement evaluation of non-Gaussian states generated by photon subtraction from squeezed states
Akira Kitagawa, Masahiro Takeoka, Masahide Sasaki +1
We consider the problem of evaluating the entanglement of non-Gaussian mixed states generated by photon subtraction from entangled squeezed states. The entanglement measures we use…
Quantum protocols for anonymous voting and surveying
J. A. Vaccaro, Joseph Spring, Anthony Chefles
We describe quantum protocols for voting and surveying. A key feature of our schemes is the use of entangled states to ensure that the votes are anonymous and to allow the votes to…