Mesoscopic transport of fermions through an engineered optical lattice connecting two reservoirs

工程化储层中的绝热量子轨迹

Adiabatic quantum trajectories in engineered reservoirs

研究工程化储层辅助的绝热量子态传输协议效率，通过推导最优含时Lindblad方程调度，发现其在Born-Markov极限外可能优于幺正协议，为开放量子系统绝热捷径理论做出贡献。

Contact resistance and phase slips in mesoscopic superfluid atom transport

We have experimentally measured transport of superfluid, bosonic atoms in a mesoscopic system: a small channel connecting two large reservoirs. Starting far from equilibrium (superfluid in a single reservoir), we observe first resistive flow transitioning at a critical current into superflow, characterized by oscillations. We reproduce this full evolution with a simple electronic circuit model. We compare our fitted conductance to two different microscopic phenomenological models. We also show that the oscillations are consistent with LC oscillations as estimated by the kinetic inductance and …

Cavity-based reservoir engineering for Floquet-engineered superconducting circuits

Considering the example of superconducting circuits, we show how Floquet engineering can be combined with reservoir engineering for the controlled preparation of target states. Floquet engineering refers to the control of a quantum system by means of time-periodic forcing, typically in the high-frequency regime, so that the system is governed effectively by a time-independent Floquet Hamiltonian with novel interesting properties. Reservoir engineering, on the other hand, can be achieved in superconducting circuits by coupling a system of artificial atoms (or qubits) dispersively to pumped leak…

Reservoir-engineered spin squeezing: macroscopic even-odd effects and hybrid-systems implementations

We revisit the dissipative approach to producing and stabilizing spin-squeezed states of an ensemble of $N$ two-level systems, providing a detailed analysis of two surprising yet generic features of such protocols. The first is a macroscopic sensitivity of the steady state to whether $N$ is even or odd. We discuss how this effect can be avoided (if the goal is parity-insensitive squeezing), or could be exploited as a new kind of sensing modality to detect the addition or removal of a single spin. The second effect is an anomalous emergent long timescale and a "prethermalized" regime that occur…

人工手性自旋液体平台中半量子化热导的可控构建

Controlled Buildup of Half-Quantized Thermal Conductance in an Engineered Chiral Spin Liquid Platform

本研究在耦合伊辛链储库的人工手性自旋液体平台中，通过绝热开启隧穿耦合实现动态准稳态下接近半量子化的热导，验证了其与Landauer-Büttiker理论的一致性，为拓扑热输运研究提供可控平台。

利用工程化储库对多模模型中的电荷与激子转移进行量子模拟

Quantum Simulation of Charge and Exciton Transfer in Multi-mode Models using Engineered Reservoirs

本研究利用囚禁离子系统，结合定制自旋-声子相互作用与储库工程技术，实现多模振动耦合模型中电荷与激子转移的开放系统量子模拟，揭示振动模式对转移效率的调控机制，为相关化学过程模拟及器件设计提供新途径。