Finite-Time Quantum Dissipation Engineering

QDE is an emerging paradigm in which an ancillary quantum system is used to remove entropy from a primary quantum system of interest. As a means for entropy reduction, quantum dissipation engineering (QDE) is useful across the domains of quantum sensing, computing, communication, and networking. Whereas most existing approaches concern QDE over an infinite time horizon, this paper studies the use of engineered environments to prepare the primary system in a pure state within finite time. This corresponds to completely transferring the primary system's initial entropy to the engineered environment in finite time. Necessary and sufficient conditions for performing this task are derived. These conditions elucidate the potential of finite-time QDE using real-world quantum systems.