Streaming universal distortion-free entanglement concentration (2009)
Blume-Kohout, Robin, Croke, Sarah, Gottesman, Daniel
This paper presents a streaming (sequential) protocol for universal entanglement concentration at the Shannon bound. Alice and Bob begin with N identical (but unknown) two-qubit pure states, each...
Noiseless linear amplification via weak measurements (2009)
We discuss the recently introduced concept of non-deterministic noiseless linear amplification, demonstrating that such an operation can only be performed perfectly with vanishing probability of...
On the conditions for discrimination between quantum states with minimum error (2008)
Barnett, Stephen M., Croke, Sarah
We provide a simple proof for the necessity of conditions for discriminating with minimum error between a known set of quantum states.
Quantum state discrimination (2008)
Barnett, Stephen M., Croke, Sarah
It is a fundamental consequence of the superposition principle for quantum states that there must exist non-orthogonal states, that is states that, although different, have a non-zero overlap. This...
No-signaling bound on quantum state discrimination (2008)
Croke, Sarah, Andersson, Erika, Barnett, Stephen M.
Quantum correlations do not allow signaling, and any operation which may be performed on one system of an entangled pair cannot be detected by measurement of the other system alone. This no-signaling...
No-signaling bound on quantum state discrimination (2008)
Croke, Sarah, Andersson, Erika, Barnett, Stephen M.
Quantum correlations do not allow signaling, and any operation which may be performed on one system of an entangled pair cannot be detected by measurement of the other system alone. This no-signaling...
No-Signalling Bound on Quantum State Discrimination (2007)
Croke, Sarah, Andersson, Erika, Barnett, Stephen M.
Quantum correlations do not allow signalling, and any operation which may be performed on one system of an entangled pair cannot be detected by measurement of the other system alone. This...
Mosley, Peter J., Croke, Sarah, Walmsley, Ian A., Barnett, Stephen M.
We present the first experimental demonstration of the maximum confidence measurement strategy for quantum state discrimination. Applying this strategy to an arbitrary set of states assigns to each...
Maximum Confidence Quantum Measurements (2006)
Croke, Sarah, Andersson, Erika, Barnett, Stephen M., Gilson, Claire R., Jeffers, John
We consider the problem of discriminating between states of a specified set with maximum confidence. For a set of linearly independent states unambiguous discrimination is possible if we allow for...