Yan He presents quantum metasurfaces at NanoP 2026

October 2026 🎤: From Glasgow to Rome! Yan He presented our work, “Secure Quantum Metasurfaces for Direct Quantum Key Distribution Measurements”, at NanoP 2026 on 6 October.

The idea is to build the quantum measurement into the optical surface itself. Yan shared our metasurface designs for directing photons into the measurement channels needed for quantum key distribution, working towards more compact receivers.

Lovely to see Yan sharing this work with the wider nanophotonics community. Well done, Yan! 🎉

Read the paper by Yan He and Adetunmise C. Dada.

Yan He presenting quantum metasurface designs at NanoP 2026, beside the conference banner and a slide showing nanobar simulations.
Yan He presenting at NanoP 2026 in Rome.
Yan He speaking at NanoP 2026 beside a slide illustrating a conventional quantum key distribution receiver.
A closer look at the optics behind quantum key distribution.

Jesvita Menezes in the AQT CDT Student Spotlight

October 2026 🌟: A lovely spotlight on Jes! The Applied Quantum Technology CDT has featured Jesvita Menezes in the first of its new Student Spotlight interviews.

From a poster prize at BQIT in Bristol to her first conference talk at Photon, it has been a busy first year. Jes shares what drew her to the CDT, the value of learning alongside a cohort, and her advice for prospective PhD students.

Great to see Jes’s experiences—and her enthusiasm for the year ahead at EQOQI—getting this recognition. Well done, Jes! 🎉 Read the full Student Spotlight on LinkedIn.

Jesvita Menezes presenting her first conference talk on entanglement detection at Photon 2026
Jes presenting at Photon 2026.
Jesvita Menezes standing beside her quantum entanglement research poster
Jes with her conference poster.

Photos: Applied Quantum Technology CDT on LinkedIn.

Building quantum key distribution measurements into a metasurface

September 2026 ✨: Two measurement bases, woven into one surface. Our new preprint explores a metasurface designed to measure light for quantum key distribution and route the outcomes to four detector channels.

Interleaved silicon nanobars in a metasurface design for quantum key distribution at 1550 nm.
Geometry-informed Blender rendering of the proposed metasurface for quantum key distribution at 1550 nm.

The trick is in the spacing. Patterns for linear and circular polarisation are interwoven at less than half a wavelength. An ordinary propagating-wave aperture mask cannot pick out one measurement basis without also attenuating or disturbing the other.

Yan He and Adetunmise C. Dada explore how this design can build the BB84 measurement into the device itself. Read the paper: Secure Quantum Metasurfaces for Direct Quantum Key Distribution Measurements.

Jes’s first conference talk at Photon 2026

September 2026 🎤: Congratulations to Jesvita Menezes on her first conference talk at Photon 2026, hosted by Newcastle University! A lovely milestone for Jes and a proud moment for the lab.

Jes presented our work on detecting high-dimensional entanglement using adaptive Bell tests, with Xu Kang Tan, Sanjan D. Murthy and Adetunmise C. Dada. The work is now available as a preprint: Direct Adaptive Certification of High-Dimensional Entanglement with Bell Tests.

Read Jes’s own reflections on LinkedIn. Well done, Jes!

Jesvita Menezes presenting her research overview at Photon 2026.
Jes presenting at Photon 2026. Photo via Jesvita Menezes on LinkedIn.
Jesvita Menezes discussing entanglement detection at Photon 2026.
Discussing high-dimensional entanglement. Photo via Jesvita Menezes on LinkedIn.

Quantum metasurfaces at Photon 2026

September 2026 🔬: Dr Adetunmise Dada presented “Secure Quantum Metasurfaces for Direct Quantum Key Distribution Measurements” at Photon 2026 in Newcastle on 4 September.

The talk formed part of the Nanophotonics & Nanoscale Quantum Optics session and presented work with Yan He on dielectric metasurfaces designed to implement quantum key distribution measurements within a single optical surface. The research uses numerical modelling to explore compact, passive quantum communication receivers.

A preprint is now available: Secure Quantum Metasurfaces for Direct Quantum Key Distribution Measurements (submitted 19 September 2026).

Adetunmise Dada presenting at Photon 2026.
Adetunmise Dada at Photon 2026, 4 September 2026.
Dr Adetunmise Dada speaking in front of the title slide naming him and Yan He as authors of the quantum metasurfaces work.
Presenting the quantum metasurface work with Yan He.

Detecting high-dimensional entanglement with adaptive Bell tests

August 2026 🔬: Entanglement can be hiding in plain sight. If the measurement settings are poorly aligned, even an entangled state can keep its secrets. Our new preprint explores how a Bell test can help find the right settings without first reconstructing the whole quantum state.

Bell-test values versus optimisation steps for simulated systems with 2, 4, 6 and 8 dimensions.
Adaptive Bell-test results for simulated systems with 2, 4, 6 and 8 dimensions.

Each Bell-test result steers the next adjustment. In simulations, the method revealed high-dimensional entanglement in the state families tested from two to eight dimensions, with fresh data providing an independent check at the end.

The work is by Xu Kang Tan, Jesvita Menezes, Sanjan D. Murthy and Adetunmise C. Dada, with equal contributions from Xu Kang Tan and Jesvita Menezes. Read the paper: Direct Adaptive Certification of High-Dimensional Entanglement with Bell Tests.

Measurement configurations versus dimension for adaptive Bell testing and quantum state tomography.
Measurement-setting costs for adaptive Bell tests and quantum state tomography.

Congratulations to Yan on her first paper!

Our paper has been published today in Scientific Reports.

This work was led by PhD student Yan He (her first paper🥳) and investigates broadband achromatic metalenses for the short-wave infrared (SWIR) region.

The study focuses on the important 1.8-2.3 μm band, relevant to quantum sensing, molecular spectroscopy, and free-space optical and quantum communications. Using a CaF₂-substrate metalens with silicon nanostructures, the work shows how chromatic aberration can be strongly suppressed across this broad SWIR window, while also shedding light on the nature of depolarisation in metasurface devices.

Published article: https://www.nature.com/articles/s41598-026-49825-0

Title: Broadband Achromatic Metalens for the Short-Wave Infrared
Authors: Yan He and Adetunmise C. Dada
Scientific Reports 16, 22398 (2026)

This was an important step for our work on compact SWIR photonic components for future quantum sensing and communication systems.

Congratulations Yan! 🎉

#quantumcommunications #metasurfaces #metalens #SWIR #photonics #quantumsensing #optics #nanophotonics #scientificreports

Hala and Yan at UK Semiconductors 2026

Yan He and Hala Aloufi are presenting their research at UK Semiconductors 2026, hosted by Sheffield Hallam University with the National Epitaxy Facility.

Yan will present a poster on metasurface design for the mid-infrared. Hala will present her work on nanowire assemblies for next-generation photonic sensing, developed with her co-supervisor in the School of Engineering, Dr Abdullah Al-Khalidi.

Good to see EQOQI group research contributing to the wider UK semiconductor and photonics community.

More about the team and our research:
https://adetunmise.org/research/team/

Tags: UK Semiconductors 2026, photonics, metasurfaces, semiconductors, quantum technologies

Promotion to Senior Lecturer

July 2026 🎉: Dr Adetunmise Dada has been promoted to Senior Lecturer (Associate Professor) in Optics and Quantum Technology at the University of Glasgow, effective 1 August 2026.

The promotion recognises his work in quantum photonics, teaching, research supervision and the continued development of the EQOQI Lab.

Quantum music at Glasgow Science Festival

June 2026 🎶: Dr Adetunmise Dada and singer-songwriter Maaike Siegerist brought quantum science and music together at the Glasgow Science Festival.

The event at the University of Glasgow Advanced Research Centre featured quantum-inspired songs, discussion of future quantum technologies and questions from the public.
https://www.linkedin.com/posts/adetunmisedada_really-enjoyed-being-part-of-thursday-night-activity-7471895639300177921-6x_s

Reuben Harris returns for a second summer internship

We are pleased to welcome Mr Reuben Harris back to the EQOQI Lab in June for another summer internship.

Reuben, an MSci Physics student, previously joined the lab as a Summer Intern in 2025, working on the development and testing of an entanglement generation setup. His project also involved implementing measurements to explore the feasibility of the BBM92 quantum key distribution protocol.

During his internship, Reuben has been building experience at the intersection of quantum optics, quantum information, and experimental physics. We are delighted to have him return in 2026 to continue contributing to our activities.

Welcome back, Reuben.

https://www.linkedin.com/in/reuben-harris-145635274/

Photonics Seminar at the University of St Andrews

Dr Adetunmise Dada gave the Photonics Seminar at the University of St Andrews today, speaking on engineering quantum light for scalable quantum information technologies, from single photons and entanglement to quantum measurement design.

The visit also provided valuable discussion around current challenges in quantum photonics and how measurement-engineered approaches can support future quantum information platforms. Many thanks to Graham Bruce, George Dwapanyin, and colleagues in the School of Physics and Astronomy for the invitation, warm hospitality, and thoughtful discussions.

New Manuscript Preprint💫

Congratulations to Yan He on her first manuscript preprint on arXiv, co-authored with Dr Adetunmise Dada.

The manuscript, titled “Broadband Achromatic Metalens for the Short-Wave Infrared,” explores the design of a broadband achromatic metalens for applications in the short-wave infrared region.

Read the preprint here:
https://arxiv.org/abs/2511.06053


A simulated metalens focus at 1800 nm, showing light intensity and polarization patterns at the focal plane.

BQIT Poster Prize for Jes

Congratulations to our PhD Student, Jesvita Menezes, on winning one of the poster prizes at the Bristol Quantum Information Technologies Workshop (BQIT) 🎉

Jes presented her poster at BQIT:26 the Bristol Quantum Information Technologies Workshop, an annual three-day meeting that brings together leading researchers and industry partners across quantum science and technology.

A photo of Jes posing next to her award winning poster at BQIT26

Very well deserved, Jes! Wishing you more success ahead 💫

Abi Returns to EQOQI!

🗞 October 2025: 
Some people leave the group. Some come back with unfinished quantum business.

We are very happy to welcome Abi back to the EQOQI Lab. Abi first worked with us on a project in 2022, and now returns as an MPhil researcher. It is always good when a former student comes back, it usually means we did not scare them away completely.
Welcome back, Abi. We are delighted to have you in the team again.