ON THE CONTROL OF OPEN QUANTUM BATTERIES

Quantum control techniques provide a powerful framework to harness the potential of quantum technologies while addressing limitations imposed by noise and experimental constraints. These techniques enable critical tasks such as noise mitigation, dynamical shortcut engineering, and measurement optimization, with broad applications in quantum metrology, quantum state engineering, quantum computation, and quantum thermodynamics. In this thesis, we investigate how measurement-based quantum control protocols can enhance the thermodynamic performance of open quantum batteries (OQBs) across three complementary studies, focusing on noise resilience and operational efficiency in realistic, non-idealized scenarios. The first study characterizes the role of noise, particularly non-Markovian noise, in degrading the performance of OQBs. We demonstrate that environmental memory effects may play a non-trivial role in enhancing or degrading battery performance, particularly in charger-mediated interactions. The second work extends the concept of measurement-enhanced work extraction (daemonic ergotropy) to continuously monitored OQBs. We derive fundamental bounds on extractable work under both ideal and non-ideal conditions, establishing a theoretical framework for evaluating work extraction in continuously monitored quantum systems. In the third study we analyze the energy discharging from a quantum battery through a non-ideal quantum non-demolition (QND) energy measurement protocol, both in terms of work extracted and in terms of net energy balance, quantifying trade-offs between work gain and measurement costs. We show that, provided the extraction uses unitary operations and measurement efficiency exceeds a critical threshold, a net energy gain is possible. These works explore complementary aspects of OQB control, collectively advancing the understanding of quantum energy storage in noisy environments. The first characterizes context-dependent noise impacts, the second provides tools to benchmark measurement-based control, and the third identifies viability conditions for imperfect measurement-based extraction protocols. This work bridges theoretical quantum thermodynamics with experimentally relevant constraints, offering actionable insights for the design of noise-resilient quantum batteries. By advancing active control strategies tailored to non-Markovian environments and imperfect measurements, our results contribute to the development of robust quantum energy storage systems for near-term quantum technologies.