Quantum algorithms from fluctuation theorems: Thermal-state preparation
Quantum algorithms from fluctuation theorems: Thermal-state preparation
Fluctuation theorems provide a correspondence between properties of quantum systems in thermal equilibrium and a work distribution arising in a non-equilibrium process that connects two quantum systems with Hamiltonians $H_0$ and $H_1=H_0+V$. Building upon these theorems, we present a quantum algorithm to prepare a purification of the thermal state of …