Research Scientist (Theoretical Quantum Cryptography)

London /
Science & Technology – Cyber & Quantum Technologies /
Quantinuum has developed a range of technologies and recently launched the first self-testing quantum random number generator based on quantum correlations.  This is currently implemented on quantum computers and also, in the future, on a single-purpose device.  Deployment of this technology in the cryptography space is paving the way for new levels of information security.
Location: London, Cambridge or Oxford (remote and flexible working available)

About the role
As a research scientist in theoretical quantum cryptography you will work in our quantum cryptography team, which combines expertise in different fields such as quantum information, quantum and general cryptography, mathematics and experimental physics. Our group researches and develops quantum-based solutions to problems in cryptography, see [1] for a sample of our work. Examples of our research interests include quantum random number generators, quantum key distribution but also any other cryptographic tasks with a quantum advantage.One particular focus of ours is to introduce methods for certifying the quantum behaviour of devices; this is closely related to the device-independent approach to quantum information. Our team works closely with the optics and engineering teams for the real-world implementation and deployment of our products. In this role, you will work directly with one or more of the senior members of the team either in Cambridge or in Oxford (relocation costs are covered).

Location: London, Cambridge or Oxford (remote and flexible working available)


    • Research and design new cryptography applications with a quantum advantage, together with their security proofs.
    • Find innovative solutions to the challenges faced in quantum cryptography.
    • Study, both analytically and numerically, complex problems arising in quantum information. A particular example is the study of quantum correlations.

Key Requirements:

    • MSc (or equivalent experience) in physics, mathematics, computer science or a related field.
    • Knowledge of quantum information theory.
    • Scientific programming skills (e.g. Python, C/C++ and/or other).
    • Capacity and desire to work in an interdisciplinary team.


    • PhD (or equivalent experience) in physics, mathematics, computer science or a related field.
    • Exposure to one of the following fields: Quantum cryptography, in particular the so-called device-independent approach, Quantum communications, (Quantum) complexity theory.
    • Knowledge of numerical optimisation techniques and tools.
    • An understanding of general (non-quantum) cryptography and/or of theoretical quantum optics.  
    • Track record of publications in relevant fields.
What is in it for you?
Working alongside a highly talented team, with leading names in the quantum computing industry. We offer a highly competitive package, equity, 28 days of paid holiday (in addition to public holidays), a workplace pension, a positive approach to flexible working and enhanced parental and adoption benefits.

About Us:

Science Led and Enterprise Driven. 

Our team of scientists is leading the way in the development of quantum computing. The world’s largest integrated quantum computing company, we united Cambridge Quantum’s advanced software development with Honeywell Quantum Solutions’ high-fidelity hardware to accelerate quantum computing. With full-stack technology, we’re scaling quantum computing and developing applications to solve the world’s most pressing challenges. We could be even better with you!

At Quantinuum, we believe quantum information systems will revolutionize the way we work and live. We are leading the way by helping our customers develop quantum-enabled solutions that provide a competitive-edge in their markets. 

We’re hiring the world’s best talent to make it happen. Join us!  

Please note that employment with us is subject to successfully passing our pre-employment screening checks. We are an inclusive equal opportunity employer. You will be considered without regard to age, race, creed, color, national origin, ancestry, marital status, affectional or sexual orientation, gender identity or expression, disability, nationality, sex, or veteran status.