论文标题
在光学晶格中用冷玻色子的纠缠，磁有序状态的绝热制备
Adiabatic preparation of entangled, magnetically ordered states with cold bosons in optical lattices
论文作者
论文摘要
我们分析了一种在光学晶格中制备两组骨原子的磁有序状态的方案。我们计算绝热和优化的时间依赖性坡道期间的动力学，以产生有效的自旋汉密尔顿人的基态，并确定对逼真的实验系统尺寸和时间表的稳定性。在有效的自旋1/2和自旋-1模型中，相位过渡点附近的坡道参数会产生纠缠的自旋对称状态，这些状态在量子增强的测量中具有潜在的未来应用。通过计算最终状态的量子Fisher信息来量化这些状态的制备及其对逆转的稳健性。我们确定，通常，有用的纠缠的产生应该比国家忠诚度所暗示的更强大，对实际应用的含义相应。
We analyze a scheme for preparation of magnetically ordered states of two-component bosonic atoms in optical lattices. We compute the dynamics during adiabatic and optimized time-dependent ramps to produce ground states of effective spin Hamiltonians, and determine the robustness to decoherence for realistic experimental system sizes and timescales. Ramping parameters near a phase transition point in both effective spin-1/2 and spin-1 models produces entangled spin-symmetric states that have potential future applications in quantum enhanced measurement. The preparation of these states and their robustness to decoherence is quantified by computing the Quantum Fisher Information of final states. We identify that the generation of useful entanglement should in general be more robust to heating than it would be implied by the state fidelity, with corresponding implications for practical applications.
