| Title: |
High-Fidelity Universal Gates in the 171 Yb Ground-State Nuclear-Spin Qubit |
| Authors: |
Muniz, J. A.; Stone, M.; Stack, D. T.; Jaffe, M.; Kindem, J. M.; Wadleigh, L.; Zalys-Geller, E.; Zhang, X.; Chen, C.-A.; Norcia, M. A.; Epstein, J.; Halperin, E.; Hummel, F.; Wilkason, T.; Li, M.; Barnes, K.; Battaglino, P.; Bohdanowicz, T. C.; Booth, G.; Brown, A.; Brown, M. O.; Cairncross, W. B.; Cassella, K.; Coxe, R.; Crow, D.; Feldkamp, M.; Griger, C.; Heinz, A.; Jones, A. M. W.; Kim, H.; King, J.; Kotru, K.; Lauigan, J.; Marjanovic, J.; Megidish, E.; Meredith, M.; McDonald, M.; Morshead, R.; Narayanaswami, S.; Nishiguchi, C.; Paule, T.; Pawlak, K. A.; Pudenz, K. L.; Pérez, D. Rodríguez; Ryou, A.; Simon, J.; Smull, A.; Urbanek, M.; van de Veerdonk, R. J. M.; Vendeiro, Z. |
| Source: |
PRX Quantum ; volume 6, issue 2 ; ISSN 2691-3399 |
| Publisher Information: |
American Physical Society (APS) |
| Publication Year: |
2025 |
| Description: |
Arrays of optically trapped neutral atoms are a promising architecture for the realization of quantum computers. In order to run increasingly complex algorithms, it is advantageous to demonstrate high-fidelity and flexible gates between long-lived and highly coherent qubit states. In this work, we demonstrate a universal high-fidelity gate set with individually controlled and parallel application of single-qubit gates and two-qubit gates operating on the ground-state nuclear-spin qubit in arrays of tweezer-trapped atoms. We utilize the long lifetime, flexible control, and high gate fidelity of our system to characterize native gates using single- and two-qubit Clifford and symmetric subspace randomized-benchmarking circuits with more than 200 controlled- () gates applied to one or two pairs of atoms. We measure our two-qubit entangling gate fidelity to be 99.72(3)% (99.40(3)%) with (without) postselection. In addition, we introduce a simple and optimized method for calibration of multiparameter quantum gates. These results represent important milestones toward executing complex and general quantum computation with neutral atoms. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1103/prxquantum.6.020334 |
| DOI: |
10.1103/PRXQuantum.6.020334 |
| DOI: |
10.1103/PRXQuantum.6.020334/fulltext |
| Availability: |
https://doi.org/10.1103/prxquantum.6.020334; https://link.aps.org/article/10.1103/PRXQuantum.6.020334; http://harvest.aps.org/v2/journals/articles/10.1103/PRXQuantum.6.020334/fulltext |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.AAA257EA |
| Database: |
BASE |