Research

The Quantum Energy and Transport group investigates quantum thermodynamics and quantum transport in nanoscale systems. We aim to understand how quantum coherence and correlations can be harnessed in out-of-equilibrium quantum systems for energy harvesting, heat management and quantum information processing. Our research spans non-Hermitian physics in open quantum systems, quantum metrology, and information processing in mesoscopic quantum devices.

Non-Hermitian physics

We investigate non-Hermitian phenomena in open quantum systems, with a particular focus on Liouvillian dynamics and exceptional points. We are interested in understanding how dissipation and non-Hermitian effects can be exploited as resources for controlling quantum states, generating entanglement, and developing new schemes for quantum information processing.

Selected publications

• Signatures of Liouvillian Exceptional Points in a Quantum Thermal Machine , S. Khandelwal, N. Brunner and G. Haack, PRX Quantum 2, 040346 (2021).
• Chiral Bell-State Transfer via Dissipative Liouvillian Dynamics , S. Khandelwal, W. Chen, K. W. Murch and G. Haack, Physical Review Letters 133, 070403 (2024).

Quantum metrology and thermodynamics

We study quantum transport and thermodynamics in nanoscale and mesoscopic systems, with particular interest in systems driven out of equilibrium. Our research explores energy and particle currents, fluctuations, heat transport and quantum thermal machines, as well as their applications to quantum sensing and precision measurements. We aim to understand how quantum coherence, correlations and transport properties can be exploited to improve the characterization and performance of quantum devices.

Selected publications

• Quantum Kinetic Uncertainty Relations in Mesoscopic Conductors at Strong Coupling , G. Blasi, R. Ravell Rodríguez, M. Moskalets, R. López and G. Haack, Physical Review Letters 137, 056302 (2026).
• Current-based metrology with two-terminal mesoscopic conductors , S. Khandelwal, G. T. Landi, G. Haack and M. T. Mitchison, Physical Review B 112, L161409 (2025).
• Exponential gain in clock precision using quantum correlated ticks , F. Meier, Y. Minoguchi, G. Blasi, G. Haack and M. Huber, arXiv:2601.10785 (2026).

Quantum information processing and neuromorphic computing

We investigate how open quantum systems can be harnessed for information processing by exploiting their intrinsic dynamics and nonequilibrium properties. Rather than treating dissipation and transport solely as limitations, we explore how they can provide resources for encoding, processing and retrieving information.

Our research includes transport-based approaches to quantum state characterization, thermodynamic computing using nonequilibrium systems, and quantum neuromorphic computing.

Selected publications

• Transport Approach to Quantum State Tomography , J. Bourgeois, G. Blasi and G. Haack, Physical Review Letters 136, 010802 (2026).
• Thermodynamic Networks: Harnessing Non-Equilibrium Steady States for Computation , P. Lipka-Bartosik, G. Blasi, J. Lalueza Puértolas, G. Haack, M. Perarnau-Llobet and N. Brunner, arXiv:2605.15985 (2026).