Free-Space Quantum Communication for Reliable and Secure Communication Networks

The issue of security in future communication networks is a fundamental and an increasingly crucial problem that has attracted many researchers. Cryptosystems are an indispensable part of modern telecommunication networks to secure the privacy of data transmission and to protect it from electronic copying, cloning and destroying, and to also deter unauthorized entry into the network. Vast majority of today’s cryptosystems are able to offer only computational security within the limitations of conventional computing power. Based on the firm laws of quantum mechanics rather than some unproven foundations of mathematical complexity, quantum cryptography provides a radically different solution for secret key distribution promising unconditional security.

In this project, the design and development of different communication and signal processing techniques required for the implementation of reliable and efficient quantum cryptographic systems over atmospheric optical links is studied. Most of the literature on communication theory and signal processing is particularly developed for classical communication while the nature of the problem is quite different for quantum channels. For example, quantum principles like No-cloning theorem may make some standard classical communication and signal processing techniques useless. Considering the principles of information theory and analytical and numerical models available for characterization of the atmospheric optical channel, this project will design novel techniques to increase the data rate and the reliability of free-space quantum communication links. To achieve this, we are looking for an enthusiastic and strongly motivated student to join our group who will work along with a diverse range of experts and researchers in IDCOM and LiFi R&D Centre.   

Further Information: 

Quantum Key Exchange
Quantum Key Exchange

Principal Supervisor: 

Eligibility: 

Minimum entry qualification - an Honours degree at 2:1 or above (or International equivalent) in a relevant science or engineering discipline, possibly supported by an MSc Degree. The candidate will be expected to have good programming skills (e.g., Matlab) and a good mathematical background. Further information on English language requirements for EU/Overseas applicants.

Funding: 

Strong candidates may be considered for full EPSRC funding - open to UK/EU candidates only.

Further information and other funding options.

Informal Enquiries: