Noise-robust entanglement distribution for quantum networking

About the position

This is a four-year PhD position in the Beyond Binary Quantum Information (BBQ) Lab at Heriot-Watt University, Edinburgh, in partnership with the BT Group. The position is primarily based at Heriot-Watt University, with BT offering at least three months' worth of placements.

Project description

The PhD project will develop methods for the efficient generation and measurement of high-dimensional (HD) time-bin entanglement and explore its noise-robust distribution over single-mode fibre testbeds operated by BT. The project will also develop theoretical models to study the effects of noise present in such links and use them to optimise the quality of the entanglement link. The project will lay the groundwork for further research in extending high-dimensional entanglement over larger national network scales.

Motivation

Entanglement plays a critical role in next-generation quantum technologies ranging from distributed quantum computing systems to device-independent quantum key distribution. However, the transport of entanglement over real-world links such as optical telecommunications networks present critical challenges in terms of noise and loss. Recent studies have shown that photons entangled in more than two levels (high-dimensional entanglement) offer significant advantages in this regard, enabling the development of practical and low-cost quantum networks in the future.

About the lab

The Beyond Binary Quantum Information (BBQ) Lab is led by Prof. Mehul Malik and consists of a dynamic team of researchers working at the forefront of the quantum technology revolution. You will conduct your research in the extensive photonics laboratory facilities of the BBQ Lab, which is funded by generous grants from the European Research Council (ERC), the UK Engineering and Physical Science Research Council (EPSRC), and the Royal Academy of Engineering. The BBQ Lab has significant links to leading groups in the EU/North America, and is a member of two UK National Quantum Technology Hubs (IQN/Integrated Quantum Networks and QuSIT/Quantum Sensing, Imaging, and Timing). In addition, we have an ongoing partnership with the NASA Jet Propulsion Lab (JPL) Caltech that includes access to state-of-the-art superconducting detector technology being developed at JPL.

What you will gain

• Significant expertise in theoretical and experimental quantum information science, with specific skills in programming, experimental quantum photonics, and entanglement theory
• Opportunity to develop your communication skills and build your network through international/UK collaborative projects, publication of peer-reviewed papers, and presentations at UK/EU meetings and workshops
• Potential to travel and present your work at leading international conferences in the field

Requirements

• Good understanding of quantum physics and photonics, as well as enthusiasm for experimental work
• Background in one of the following disciplines: Physics, Optics, Electronic Engineering, Computer Science, Natural Sciences (although we are open to any enthusiastic applicant with a science-related background)
• A top-class degree/high grades in your field of study are essential

Application details

• Applications from women and other underrepresented groups in Physics are especially encouraged
• Formal applications must be made through the Heriot-Watt online application system
• Please upload a cover letter, CV, and academic transcripts onto the application system (under "Supplemental items")
• Please arrange for one academic reference to be submitted via the application system ("External reference request"). A second academic reference will be requested at interview stage
• Closing date: February 15th, 2026
• Starting date: From October 1st, 2026 (some flexibility available)

Funding

• Open to all nationalities
• Supported by an EPSRC Industrial Doctoral Landscape Award (IDLA) in partnership with BT
• Additional funding is available to cover UK Visa costs, including the Immigration Healthcare Surcharge
• Annual tax-free stipend of approximately £21,383 (predicted UKRI level 2025/26) that is adjusted yearly for inflation
• Research-grade laptop provided
• Access to £3000 of departmental funds for travel to conferences and workshops
• Significant additional funds for attending national and international conferences are available from BBQLab

Informal enquiries may be made to Dr. Sugandh Sirohi at s.sirohi(at)hw.ac.uk.