报告题目：Defect-Free Arbitrary-Geometry Assembly of Mixed-Species Atom Arrays

报告人：许鹏研究员  中国科学院精密测量科学与技术创新研究院

报告时间：2023年1月6日（周五）10:00

报告地点：理六栋302会议室

线上：#腾讯会议：855-350-736        

邀请人：颜辉

报告内容：

  Optically trapped mixed-species single atom array with arbitrary geometry is an attractive and promising platform for various applications, because tunable quantum system with multiple components provides extra degrees of freedom for experimental control. Here, I will report the demonstration of two-dimensional dual-species atom assembly with  85Rb (87Rb) atoms [1]. This mixed-species atomic synthesis is achieved via rearranging initially randomly distributed atoms by a sorting algorithm (heuristic heteronuclear algorithm) which is designed for bottom-up atom assembly with both user-defined geometries and two-species atom number ratios. Combined with our previous work on heteronuclear atom entanglement [2], high-fidelity single atom operations[3],balanced coherence times of heteronuclear atomic qubits[4] and the full control of the internal and external degrees of heteronuclear atoms[5], we have build a fully tunable hybrid-atom system with scalable advantages which is a good starting point for high-fidelity quantum logic, many-body quantum simulation and single molecule array formation.

Reference

[1] Cheng Sheng,et al. Defect-Free Arbitrary-Geometry Assembly of Mixed-Species Atom Arrays, Phys. Rev. Lett. 128, 083202 (2022).

[2] Yong Zeng, et al. Entangling Two Individual Atoms of Different Isotopes via Rydberg Blockade, Phys. Rev. Lett. 119, 160502 (2017).

[3] Cheng Sheng, et al. High-Fidelity Single-Qubit Gates on Neutral Atoms in a Two-Dimensional Magic-Intensity Optical Dipole Trap Array, Phys. Rev. Lett. 121, 240501 (2018).

[4] Ruijun Guo, et al. Balanced Coherence Times of Atomic Qubits of Different Species in a Dual 3*3 Magic-Intensity Optical Dipole Trap Array, Phys. Rev. Lett. 124, 153201 (2020).

[5] Xiaodong He, et al. Coherently forming a single molecule in an optical trap, Science 370, 331(2020).

专家简介：

  许鹏，中国科学院精密测量科学与技术创新研究院，研究员。国家重点研发计划“基于冷里德堡原子的新奇物态调控”（2021YFA1402000）项目负责人；中科院青年创新促进会会员（2021年优秀会员）；2022年入选国家级青年人才项目（WRQB）；主要从事基于光镊中单原子和原子阵列的量子模拟和量子计算的工作，共发表SCI论文三十余篇，其中包括Science，Phys. Rev. Lett. ，Nat. Commun.等。