Dr Léonce Dupays is a Postdoctoral Research Associate in the Department of Mathematics at King’s College London. He attended a preparatory class in physics and mathematics from 2014 to 2016 in Lycée Clémenceau, Nantes, France. He then graduated with a master’s in quantum physics from Paris-Saclay University in 2019, along with an engineering diploma from the Institut d’Optique in Palaiseau, France.

Under the supervision of Professor Adolfo del Campo, he began his PhD in quantum physics at the Donostia International Physics Center in Bilbao, Spain. The second part of his PhD was conducted at the University of Luxembourg, where he successfully defended his thesis in January 2024. His PhD research focused on out-of-equilibrium dynamics of many-body and open quantum systems, with a particular emphasis on their control through techniques known as shortcuts to adiabaticity. During his PhD, he developed expertise in open quantum systems, stochastic calculus, out-of-equilibrium scale-invariant dynamics, and strongly correlated systems described by Tomonaga-Luttinger liquid theory.

He joined King’s College in October 2024 under the guidance of Lecturer Paola Ruggiero and in close proximity to Professor Benjamin Doyon's group. His research remains focused on one-dimensional systems, where he explores concepts of entanglement entropy and generalized hydrodynamics.

Research interests

Dr Dupays' research activities focus on the out-of-equilibrium dynamics of low-dimensional, strongly correlated quantum systems. His recent research includes studying interaction quenches in the Tomonaga-Luttinger liquid and its exact dynamics. Recently, he has also worked on open quantum systems, including non-Hermitian quenches in the Luttinger liquid and third quantization procedures. His work at King’s focuses on entanglement entropy and generalized hydrodynamics.

• Out-of-equilibrium dynamics of one-dimensional many-body quantum systems
• Open quantum systems
• Entanglement entropy

Further information

• Google scholar
• Delta-kick cooling, time-optimal control of scale-invariant dynamics, and shortcuts to adiabaticity assisted by kicks, L. Dupays, D. Spierings, A. Steinberg, A. del Campo, Phys. Rev. Res. 3, 033261 (2021)
• Exact dynamics of the Tomonaga-Luttinger liquid and shortcuts to adiabaticity, L. Dupays, B. Dora, A. del Campo, Phys. Rev. B 110,  155104 (2024)
• Slow approach to adiabaticity in many-body non-Hermitian systems: the Hatano-Nelson Model, L. Dupays, A. del Campo, B. Dora