504 citations · 7.2k across the 114 of their papers we have counts for
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A Comparison of Quantum Oracles
Elham Kashefi, Adrian Kent, Vlatko Vedral +1
A standard quantum oracle for a general function is defined to act on two input states and return two outputs, with inputs and ($i,j \in…
Fidelity trade-off for finite ensembles of identically prepared qubits
Konrad Banaszek, Igor Devetak
We calculate the trade-off between the quality of estimating the quantum state of an ensemble of identically prepared qubits and the minimum level of disturbance that has to be int…
Fidelity of Single Qubit Maps
M. D. Bowdrey, D. K. L. Oi, A. J. Short +1
We give a simple way of characterising the average fidelity between a unitary and a general operation on a single qubit which only involves calculating the fidelities for a few pur…
Generation of correlated photons in controlled spatial modes by down-conversion in nonlinear waveguides
Konrad Banaszek, Alfred B. U'Ren, Ian A. Walmsley
We report the observation of correlated photon pairs generated by spontaneous parametric down-conversion in a quasi-phase matched KTiOPO4 nonlinear waveguide. The highest ratio of…