耦合原子与分子玻色-爱因斯坦凝聚体的涨落谱与响应函数
Fluctuation Spectra and Response Function of Coupled Atomic and Molecular BECs
AI总结：
该研究针对受高斯白噪声影响的Feshbach共振耦合原子-分子玻色-爱因斯坦凝聚体，利用玻色约瑟夫森结与布洛赫球方法，揭示其涨落谱与响应特性，实现功率利用率与品质因数的优化。
AI中文摘要：
我们研究了通过Feshbach共振耦合的原子-分子玻色-爱因斯坦凝聚体的非平衡性质，其中Feshbach耦合与失谐受高斯白噪声影响。利用玻色约瑟夫森结框架与布洛赫球描述，我们分析了决定系统动力学的失谐、相干性与噪声的相互作用。耦合与失谐噪声产生不同的涨落谱，兼具Feshbach共振峰与对称非共振峰。我们表征了原子二聚体系统在周期驱动下的色散与吸收响应，Feshbach共振处的原子-分子杂化使线宽最大化，同时最小化有效温度及驱动场与系统间的相位差，这带来了优化的功率利用率与品质因数。
英文摘要：
We investigate out-of-equilibrium properties of atomic molecular Bose Einstein condensates coupled through a Feshbach resonance, with the Feshbach coupling and detuning subject to Gaussian white noise. Using a bosonic Josephson junction framework and a Bloch sphere description, we examine the interplay of detuning, coherence, and noise governing the system dynamics. Coupling and detuning noise produce distinct fluctuation spectra, featuring both Feshbach resonant and symmetric off resonant peaks. We characterize the dispersive and absorptive response of the atom dimer system under periodic driving. The atom molecule hybridization at the Feshbach resonance maximizes the linewidth and minimizes both the effective temperature and the phase difference between the driving field and the system. This leads to an optimized power utilization and quality factor.
