AI 中文总结
研究中性原子量子处理器因光学可达性与原子存储时间权衡限制量子比特数的问题，提出新型低温增强中性原子装置，实现单原子两小时囚禁寿命，为扩展到数万个原子阵列提供可行途径。
AI 中文摘要
中性原子量子处理器正迅速向拥有超过一万个量子比特的系统规模发展，这有助于实现一类新的量子计算算法和量子模拟实验，但当前的中性原子平台通常需要在光学可达性和原子在光势中的存储时间之间进行权衡，限制了可用量子比特数。本文报道了一种新型的、低温增强的中性原子装置的运行情况，该装置克服了这些明显相互矛盾的要求。我们展示了在光镊阵列中单个$^{88}\mathrm{Sr}$原子的真空限制囚禁寿命长达两小时，同时保留了完全光学接入且无需复杂的低温外壳。我们的测量表明，通过相对简单的低温恒温器设计可以实现极长的单原子寿命。我们的架构可以直接移植到其他原子种类，并为扩展到数万个原子的有序阵列展示了一条可行的途径。
英文摘要
Neutral-atom quantum processors are rapidly scaling toward system sizes of more than ten thousand qubits, allowing for the realization of a new class of quantum computing algorithms and quantum simulation experiments. However, current neutral-atom platforms generally have to find a compromise between the optical accessibility and the storage time of atoms in optical potentials, limiting the available qubit numbers. Here we report on the operation of a novel, cryogenically enhanced, neutral-atom apparatus that overcomes these apparently conflicting requirements. We demonstrate vacuum-limited trapping lifetimes of up to two hours of single $^{88}\mathrm{Sr}$ atoms in an optical tweezer array while preserving full optical access and without the need for complex cryogenic enclosures. Our measurements show that exceptionally long single-atom lifetimes can be achieved with a relatively simple cryostat design. Our architecture can be straightforwardly ported to other atomic species and shows a viable path for scaling up to sorted arrays of tens of thousands of atoms.
