Efficiently Cooling Quantum Systems with Finite Resources: Insights from Thermodynamic Geometry

Understand

Landauer's limit on heat dissipation during information erasure is critical as devices shrink, requiring optimal pure-state preparation to minimise errors.

• However, Nernst's third law states this demands infinite resources in energy, time, or control complexity.
• We address the challenge of cooling quantum systems with finite resources.
• Using Markovian collision models, we explore resource trade-offs and present efficient cooling protocols (that are optimal for qubits) for coherent and incoherent control.