Supersymmetry-assisted high-fidelity ground-state preparation of a single neutral atom in an optical tweezer
Supersymmetry-assisted high-fidelity ground-state preparation of a single neutral atom in an optical tweezer
复制标题
DOI：
10.1103/physreva.103.012415
复制
发表时间：
2021-01
影响因子：
2.9
通讯作者：
Xiwang Luo;M. Raizen;Chuanwei Zhang
中科院分区：
文献类型：
--
作者：
Xiwang Luo;M. Raizen;Chuanwei Zhang
光镊中的中性原子量子比特阵列是一种很有前途的量子计算平台。尽管实验取得了进展，但实现中性原子量子计算的一个主要障碍是量子比特初始化。在这里，我们提出，超对称性，在粒子物理学中发展的理论框架，可以用于中性原子量子比特的超高保真度初始化。我们证明了通过将所有激发态原子抽离到一个超对称的辅助光镊中，可以在光镊的振动基态确定性地制备单个原子。该方案适用于现实的高斯光镊中捕获的玻色子和费米子原子量子比特，并可能为实现大规模量子计算，模拟和中性原子的信息处理铺平道路。
Arrays of neutral-atom qubits in optical tweezers are a promising platform for quantum computation. Despite experimental progress, a major roadblock for realizing neutral-atom quantum computation is the qubit initialization. Here we propose that supersymmetry, a theoretical framework developed in particle physics, can be used for ultrahigh-fidelity initialization of neutral-atom qubits. We show that a single atom can be deterministically prepared in the vibrational ground state of an optical tweezer by adiabatically extracting all excited atoms to a supersymmetric auxiliary tweezer. The scheme works for both bosonic and fermionic atom qubits trapped in realistic Gaussian optical tweezers and may pave the way for realizing large-scale quantum computation, simulation, and information processing with neutral atoms.