Tuomas Pyhäranta

Tuomas Pyhäranta is a Doctoral Researcher at the Department of Applied Physics, Aalto University, and contributes to the Centre of Excellence in Quantum Technology (QTF). His work intersects quantum thermodynamics, condensed matter physics, and nanoscale energy systems.

• Quantum heat fluctuations in driven systems
• Bose-Einstein condensation and phase transitions
• Thermodynamic geometry of quantum gases
• Single-electron injection for precision measurement

Tuomas's research focuses on quantum thermodynamics and quantum technology applications. His recent work includes modeling heat engines enhanced by Bose-Einstein condensates (BECs), analyzing energy transfer in bipartite quantum systems without external driving, and optimizing frequency-to-power conversion via single-electron devices. Key methodologies involve nonequilibrium thermodynamics, statistical mechanics, and quantum transport in nanoscale systems.

His six recent publications (2019–2023) explore: (1) geometric frameworks for BEC-enhanced heat engines, (2) Lee-Yang theory in condensation, (3) heat fluctuations in superconducting devices, and (4) correlation-driven energy exchange without external work. Topics span quantum statistical mechanics, nanoscale thermodynamics, and precision quantum metrology.

• Projects: Quantum Engineering of Charge, Heat, and Entropy Production in Nano-Devices (2017–2021), Finnish Centre of Excellence in Quantum Technology (2018–2020), and Realisation of the redefined kelvin (2019–2023), funded by the Academy of Finland and EU competitive grants.
• Collaborators include Jukka P. Pekola, Christian Flindt, and Karl Brandner.