Yearly Archives: 2018

Multi-level coherence

Our work on the certification and quantification of multi-level coherence, a collaboration with Marco Piani at the University of Strathclyde, Gerardo Adesso at Nottingham, and Andrew White at the University of Queensland, has recently appeared in PRX. Here’s the press release from the University of Nottingham: The research – Certification and Quantification of Multilevel Quantum Coherence – […]

Read More

Multi-time entanglement

Entanglement usually refers to stronger-than-classical correlations between spatially separated quantum systems. It can however also manifest itself across points in time, in a number of different ways, as discussed in this excellent popular science article by George Musser. Most research on temporal correlations goes back to Leggett and Garg, who showed that subsequent measurements on […]

Read More

How to make a pure downconversion photon

It’s been almost a year since I last added some news here but that doesn’t mean nothing has happened in the lab. We’ve made some very good progress on one of our major goals, the creation of spectrally pure single photons via parametric downconversion. This progress is summarised in one theory paper published earlier last […]

Read More