PhD Studentship Quantum Photonic Memory for Telecommunication Networks

University of Southampton is pleased to invite applicants to apply for a new opening PhD position in spectroscopy. The initial contract for this position is 5 years. Applications are welcome before August 31, 2020.

Quantum photonic networks enable powerful technologies like quantum computing, unprecedented sensing capability, and guaranteed secure communication, operating at high bandwidth and in ambient conditions. This PhD project, in the Southampton group of Dr Patrick M Ledingham, concerns the development of a quantum optical memory - a device that stores and recalls on-demand quantum photonic states - to allow for synchronisation capability that will be crucial to scale up a future quantum photonic network.

A quantum memory must be capable of efficient storage and recall of broadband single photons, by mapping them into and out of atomic ensembles, in a way that is compatible with high-speed telecommunication networks. Your project will combine novel optical pumping techniques and integrated approaches to develop vapour and solid-state platforms that can be the basis for a high-speed noise-free quantum memory for telecom light. The memory will use protocols and techniques such as atomic frequency comb memory [1] and off-resonant cascaded absorption memory [2], which we have recently shown to be a completely noise-free quantum memory at room temperature.

Photonics is emerging as a strong platform for realising quantum-based technologies, since quantum information can be encoded into photons and travel long distances in low-loss telecommunication fibres under ambient conditions, without noise, and at high bandwidth. This opens the possibility for you to explore and exploit quantum phenomena without the need for ultrahigh vacuum or ultracold cryogenic systems. This practical project will enable you to develop experimental skills in laser spectroscopy, quantum and non-linear optics, cryogenics, RF electronics, data analysis and control programming. You will present your work at national and international conferences, and there are plenty of chances for local and international collaboration.

: applications should be received no later than 31 August 2020 for standard admissions, but later applications may be considered depending on the funds remaining in place.

Applications should be made online, please select the academic session 2020-21 "PhD Physics(Full time)" as the programme. Please enter Dr Patrick Ledingham under the proposed supervisor.

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