تقرير
Time-Optimal Control of Collisional $\sqrt{\text{SWAP}}$ Gates in Ultracold Atomic Systems
| العنوان: | Time-Optimal Control of Collisional $\sqrt{\text{SWAP}}$ Gates in Ultracold Atomic Systems |
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| المؤلفون: | Jensen, Jesper Hasseriis Mohr, Sørensen, Jens Jakob, Mølmer, Klaus, Sherson, Jacob Friis |
| المصدر: | Phys. Rev. A 100, 052314 (2019) |
| سنة النشر: | 2019 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | We use quantum optimal control to identify fast collision-based two-qubit $\sqrt{\text{SWAP}}$ gates in ultracold atoms. We show that a significant speed up can be achieved by optimizing the full gate instead of separately optimizing the merge-wait-separate sequence of the trapping potentials. Our optimal strategy does not rely on the atoms populating the lowest eigenstates of the merged potential, and it crucially includes accumulation of quantum phases before the potentials are fully merged. Our analyses transcend the particular trapping geometry, but to compare with previous works, we present systematic results for an optical lattice and find greatly improved gate durations and fidelities. Comment: 15 pages, 13 figures, animations at https://www.quatomic.com/quatomic_publications/ |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevA.100.052314 |
| URL الوصول: | http://arxiv.org/abs/1907.08504 |
| رقم الأكسشن: | edsarx.1907.08504 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevA.100.052314 |
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