Tillmann's paper on the quantum enhanced estiamtion of non-commuting phases is published in Physical Review Letters. It shows that the simultaneous estimation of all three components of a magnetic field can be better than estimating them indivdually. It presents the measurements that come close to attaining the quantum limit. Our study also reveals that too much quantum entanglement may be detrimental to attaining the Heisenberg scaling in the estimation of unitarily generated parameters.
Here is the link to a highlight on the Physics website.
Paper on tomography of superconducting detectors published in New Journal of Physics
Latest paper with Ian Walmsley's group at Oxford, studying how photon numbers can be inferred from the continuous trace outputs of superconducting transition edge sensors.