Quantum algorithms and applications for open quantum systems
Accurate models for open quantum systems─ quantum states that have nontrivial
interactions with their environment─ may aid in the advancement of a diverse array of fields …
interactions with their environment─ may aid in the advancement of a diverse array of fields …
Stabilizing open quantum batteries by sequential measurements
A quantum battery is a work reservoir that stores energy in quantum degrees of freedom.
When immersed in an environment, an open quantum battery needs to be stabilized against …
When immersed in an environment, an open quantum battery needs to be stabilized against …
The Ising critical quantum Otto engine
We study a four-stroke Otto engine whose working fluid is a quantum Ising chain. The
thermodynamic cycle consists in sweeps of the transverse magnetic field occurring in …
thermodynamic cycle consists in sweeps of the transverse magnetic field occurring in …
Speed-ups to isothermality: Enhanced quantum thermal machines through control of the system-bath coupling
Isothermal transformations are minimally dissipative but slow processes, as the system
needs to remain close to thermal equilibrium along the protocol. Here, we show that …
needs to remain close to thermal equilibrium along the protocol. Here, we show that …
Identifying optimal cycles in quantum thermal machines with reinforcement-learning
The optimal control of open quantum systems is a challenging task but has a key role in
improving existing quantum information processing technologies. We introduce a general …
improving existing quantum information processing technologies. We introduce a general …
Simulating Markovian open quantum systems using higher-order series expansion
We present an efficient quantum algorithm for simulating the dynamics of Markovian open
quantum systems. The performance of our algorithm is similar to the previous state-of-the-art …
quantum systems. The performance of our algorithm is similar to the previous state-of-the-art …
Quadratic enhancement in the reliability of collective quantum engines
We study fluctuations in many-body quantum heat engines operating in the presence of
collective system-bath interactions. We show that collective effects in open quantum systems …
collective system-bath interactions. We show that collective effects in open quantum systems …
Model-free optimization of power/efficiency tradeoffs in quantum thermal machines using reinforcement learning
A quantum thermal machine is an open quantum system that enables the conversion
between heat and work at the micro or nano-scale. Optimally controlling such out-of …
between heat and work at the micro or nano-scale. Optimally controlling such out-of …
Maximum power and corresponding efficiency for two-level heat engines and refrigerators: optimality of fast cycles
We study how to achieve the ultimate power in the simplest, yet non-trivial, model of a
thermal machine, namely a two-level quantum system coupled to two thermal baths. Without …
thermal machine, namely a two-level quantum system coupled to two thermal baths. Without …
Finite-time quantum Stirling heat engine
We study the thermodynamic performance of a finite-time non-regenerative quantum Stirling-
like cycle used as a heat engine. We consider specifically the case in which the working …
like cycle used as a heat engine. We consider specifically the case in which the working …