Archives

Physics Nobel prize for entangled photons

The 2022 Nobel prize in physics was awarded jointly to Alain Aspect, John Clauser, and Anton Zeilinger, “for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science”. This is fantastic news for our field. This Nobel has been mooted for some years now, although perhaps there was some speculation […]

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REF2021 — Physics at Heriot-Watt

The results for the long-awaited REF2021 UK research assessment exercise have arrived, and Heriot-Watt has done very well, in particular in physics: Heriot-Watt University is top in Scotland for its world-leading (4*) Physics research, in the REF 2021 results released today. Physics also came top in the UK for its world-leading research outputs and saw […]

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EMQ Lab joins international QEYSSat science team

We’re proud to announce that our lab is now part of the international QEYSSat science team. QEYSSat is a quantum communication satellite mission initiated and developed by Thomas Jennewein at the University of Waterloo, together with the Canadian Space Agency. The QEYSSat team can be found here. Read our press release announcing the new QEYSSat […]

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Quantum holds the key to secure conference calls

Our quantum conference key agreement paper has now been published in Science Advances. Here’s our press release: The world is one step closer to ultimately secure conference calls, thanks to a collaboration between Quantum Communications Hub researchers and their German colleagues, enabling a quantum-secure conversation to take place between four parties simultaneously. The demonstration, led […]

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Bridging the gap — quantum frequency conversion of a quantum dot to telecom frequency

We’ve had a new paper published together with Brian Gerardot’s group in Applied Physics Letters, highlighted by the editors and on the cover, no less. Chris from my group and Zak have kindly done a writeup for our physics undergrad society newsletter — see below. Quantum information processing requires deterministic, high purity single-photon sources. However, for […]

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EMQL joins the UK Quantum Technology Hub for Quantum Communications

The UK national agenda in quantum technology is moving into its second 5-year phase, with all four quantum hubs receiving renewed funding. Having previously been a partner, our lab is now a full member of the Quantum Communications Hub led by the University of York — their press release for the new phase can be found […]

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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 – […]

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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 […]

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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 […]

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Quantum circuit discovery for quantum-enhanced logistics

Not a result (yet), but an intro to a new research direction for our lab. Financed and supported by the Oxford Quantum Hub NQOIT, we’re collaborating with Prof. David Corne from Heriot-Watt’s School of Mathematical & Computer Sciences and local logistics services provider Route Monkey to develop quantum enhanced-software via circuit discovery. HW press release […]

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