Quantum Thermodynamics of Precision in Electronic Devices

量子技术利用微观世界的反直觉物理来获得相对于纯经典系统的优势。为了实现商业用途，目前主要的研究努力致力于扩大目前嘈杂的中等规模量子设备的规模。需要克服的根本挑战是噪声，噪声的存在是基本的量子和热力学原理以及测量和控制此类设备的精度限制所必需的。为了克服这一挑战，我们需要了解量子设备精确度的基本热力学限制。值得注意的是，最近有人预测，与经典过程相比，相干量子过程显示出一种新的量子优势：量子热力学定律允许以更少的能量和熵代价获得更高的测量精度。Aspects的雄心勃勃的目标是在两个最有前途的量子技术平台上演示、探索和利用这种新的效应：即超导量子比特和纳米机电设备。具体地说，我们将设计和制造量子电路器件，以实验评估计时和量子比特读出的能量成本。在先进理论和数值模拟的支持下，我们将在我们的测量中展示量子热力学精度的优势。这一突破性的进展将为量子计量学带来一种新的范式，其中量子热力学效应将提高效率和精度。我们早期研究人员的平衡联盟建立在我们强大的现有合作和我们对高能效量子技术未来的统一和连贯愿景的基础上。汇聚了精密测量、量子信息和非平衡统计物理方面的世界领先专业知识，Aspects将对欧洲量子技术格局产生深远和持久的影响。

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 intermediate-scale quantumdevices. The fundamental challenge to be overcome is noise, whose presence is necessitated by basic quantum and thermodynamicprinciples 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 beenpredicted that coherent quantum processes exhibit a new kind of quantum advantage with respect to classical processes: the laws ofquantum thermodynamics allow higher measurement precision for less energy and entropy cost. The ambitious goal of ASPECTS is todemonstrate, explore, and exploit this novel effect on two of the most promising quantum technology platforms: namely,superconductingqubits and nanoelectromechanical devices. Specifically, we will design and build quantum circuit devices to experimentally assess theenergy cost of timekeeping and qubit readout. With support from advanced theory and numerical simulations, we will demonstratequantum-thermodynamic precision advantage in our measurements. This ground-breaking advance will usher in a new paradigm forquantum metrology in which quantum-thermodynamic effects boost both efficiency and precision. Our balanced consortium of earlycareer researchers is founded on our strong existing collaborations and our unified and coherent vision for the future of energy-efficientquantum technologies. Bringing together world-leading expertise in precision measurement, quantum information, and non-equilibriumstatistical physics, ASPECTS will make a deep and lasting impact on the European quantum technologies landscape.