原子电子约瑟夫森项链中的旋量凝聚体持续电流
Spinor condensate persistent currents in an atomtronic Josephson necklace
AI总结：
本研究探究环形多约瑟夫森结上旋量原子玻色-爱因斯坦凝聚体的持续电流，考察多种因素对其的影响，揭示第二种组分可实现超流的多种操控机制，为相关工程应用提供路线图。
AI中文摘要：
当前，对多结约瑟夫森电路中超流的研究是物理学的前沿领域，可探究宏观相位相干性的基本表现，并应用于量子模拟、计量学和计算。本研究中，我们深入探究了环形多约瑟夫森结上的旋量原子玻色-爱因斯坦凝聚体的持续电流的稳定性与动力学，具体考察了正、负种间相互作用、同向与反向旋转、粒子数与马纳科夫（Manakov）不对称性，以及拉比（Rabi）耦合对两种组分携带的持续电流的影响。我们的分析表明，第二种组分的存在为环形超流的操控提供了多种前所未有的机制，包括相位滑移工程、稳定性控制、电流反转切换以及超流泵浦。本研究为项链势中二元环形凝聚体的持续电流工程提供了路线图，对原子电子学、物质波干涉测量以及原子玻色气体的传感具有重要意义。
英文摘要：
The investigation of superflow in multi-junction Josephson circuits is currently a leading frontier of physics research, probing the fundamental manifestations of macroscopic phase coherence and enabling applications to quantum simulation, metrology and computing. In this work, we extensively investigate the stability and dynamics of persistent currents of a spinor atomic Bose-Einstein condensate on a ring with multiple Josephson junctions. Specifically, we examine the effects of positive and negative interspecies interactions, co- and counter-rotation, population and Manakov asymmetry, as well as Rabi coupling on the persistent currents carried by the two components. Our analysis reveals that the presence of a second species offers multiple mechanisms for unprecedented manipulation of supercurrents on the ring, including phase-slip engineering, stability control, current-inversion switching and supercurrent pumping. Our study provides a roadmap for the engineering of persistent currents in binary ring condensates in necklace potentials, with significant implications for atomtronics, matter-wave interferometry and sensing using atomic Bose gases.
