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Quantum Engineering
in Low-Dimensional Systems 

Our research interest is to introduce new insights, and new aspects of quantum physics, by exploiting the interaction effects by manipulating  electron wavefunctions in a controllable manner to allow technological exploitation of basic quantum physics and utilising the recent discovery on the self-organisation of fractional quantum states and electron spins. The major challenges to be investigated: spin and charge  manipulation, demonstrating electron entanglement and detection, mapping self-organised fractional states and their spin states, controlled manipulation and detection of hybrid  fractional states and establishing if they are entangled. Our research activity opens up a new area in the quantum physics of condensed matter with the possibilty of generation of Non-Abelian fractions which can be used in a Topological Quantum Computation scheme..

New: PhD opportunities. Scroll down for further details. 

Sanjeev Kumar is a UKRI Future Leaders Fellow  at the Department of Electronic and Electrical Engineering, University College London, and leads work on investigating electron transport in low dimensional semiconductor nanostructures for fundamental aspects of quantum condensed matter physics for quantum technologies.

Sanjeev Kumar

Principal Investigator 

Nanoscale devices 

We measure electron transport in nanoscale devices by forming one-dimensional (1D) quantum wires via the split gate technique and use a top gate to control the density and shape of confinement which defines the 1D channel.. 

Chip carrier 

We fabricate quantum devices using high quality GaAs/AlGaAs based III-V semiconductor heterostructures in a cleanroom by converting the high quality wafers in a Hall-bar geometry (shown in inset) and then performing  electron-beam lithography to define split gates and top gate as shown above. The final device is wire bonded in a ledless chip carrier... 


Ultra low temperature 

Dilution refrigerator 

All the measurements are performed at mK range (<50mK) as the electron's mean free path is over 100's of micrometer therefore ballistic transport can be investigated at variety of experimental conditions.
Background image: Cryofree dilution refrigerators with superconducting magnet. 

PhD Opportunities: PhD Studentship in “Quantum Engineering in Low Dimensional Semiconductors”

Duration of study: Full time-four years fixed term

Starting date: October 2019

Application deadline: Closing date for application is June 30, 2019 or until the position is filled.

Funding: This is a fully funded 4-year PhD studentship to cover the Home/UK and EU

students tuition fees plus a stipend of £16,777/year (2019/2020) tax-free for living costs

(increasing with inflation).

Please send your academic CV with an expression of interest to

Dr S Kumar ( including contact details of three potential


For further details, click here