Quantum technologies exploit the counterintuitive physics of the microscopic world to gain an advantage over purely classical systems. In order to achieve commercial usefulness, major research efforts are now devoted to scaling up current noisy inter mediate scale quantum devices. The fundamental challenge to be overcome is noise, whose presence is necessitated by basic quantum and thermodynamic principles as well as limitations on the precision with which such devices can be measured and controlled. To overcome this challenge, we need to understand the fundamental thermodynamic limitations on precision in quantum devices.
Remarkably, it has recently been predicted that coherent quantum processes exhibit a new kind of quantum advantage with respect to classical processes: the laws of quantum thermodynamics allow higher measurement precision for less energy and entropy cost.
The ambitious goal of this theoretical project is to demonstrate, explore, and exploit this novel effect on two of the most promising quantum technology platforms: namely, superconducting qubits and nanoelectromechanical devices. In order to achieve this purpose, we will work together with some experimental groups. We will collaborate, in the context of an EU project recently funded, in the design and build of quantum circuit devices to experimentally assess the energy cost of timekeeping and qubit readout. With our support from advanced theory and numerical simulations, we are planning to demonstrate quantum-thermodynamic precision advantage in our measurements.
This EU project is in collaboration with:
Mark Mitchison. TRINITY COLLEGE DUBLIN
Natalia Ares. UNIVERSITY OF OXFORD
Marcus Huber. TECHNISCHE UNIVERSITAET WIEN
Simone Gasparinetti. CHALMERS TEKNISKA HOGSKOLA