Two-qubit entangling gates within arbitrarily long chains of trapped ions
| Autor: | K. A. Landsman, Kenneth R. Brown, Christopher Monroe, Daiwei Zhu, Yukai Wu, Norbert M. Linke, Pak Hong Leung, L.-M. Duan |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Atomic Physics (physics.atom-ph) Inverse FOS: Physical sciences Quantum Physics 01 natural sciences Physics - Atomic Physics 010305 fluids & plasmas Ion Computer Science::Emerging Technologies Quantum gate Qubit Quantum mechanics 0103 physical sciences Coulomb Ion trap 010306 general physics Scaling Quantum computer |
| DOI: | 10.48550/arxiv.1905.10421 |
| Popis: | Ion trap systems are a leading platform for large scale quantum computers. Trapped ion qubit crystals are fully-connected and reconfigurable, owing to their long range Coulomb interaction that can be modulated with external optical forces. However, the spectral crowding of collective motional modes could pose a challenge to the control of such interactions for large numbers of qubits. Here, we show that high-fidelity quantum gate operations are still possible with very large trapped ion crystals, simplifying the scaling of ion trap quantum computers. To this end, we present analytical work that determines how parallel entangling gates produce a crosstalk error that falls off as the inverse cube of the distance between the pairs. We also show experimental work demonstrating entangling gates on a fully-connected chain of seventeen $^{171}{\rm{Yb}}^{+}$ ions with fidelities as high as $97(1)\%$. Comment: 10 pages, 6 figures |
| Databáze: | OpenAIRE |
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