A scalable helium gas cooling system for trapped-ion applications

Lebrun-Gallagher, F R, Johnson, N I, Akhtar, M, Weidt, S, Bretaud, D, Hile, S J, Owens, A, Bonus, F and Hensinger, W K (2022) A scalable helium gas cooling system for trapped-ion applications. Quantum Science and Technology, 7. 024002-024002. ISSN 2058-9565

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Microfabricated ion-trap devices offer a promising pathway towards scalable quantum computing. Research efforts have begun to focus on the engineering challenges associated with developing large-scale ion-trap arrays and networks. However, increasing the size of the array and integrating on-chip electronics can drastically increase the power dissipation within the ion-trap chips. This leads to an increase in the operating temperature of the ion-trap and limits the device performance. Therefore, effective thermal management is an essential consideration for any large-scale architecture. Presented here is the development of a modular cooling system designed for use with multiple ion-trapping experiments simultaneously. The system includes an extensible cryostat that permits scaling of the cooling power to meet the demands of a large network. Following experimental testing on two independent ion-trap experiments, the cooling system is expected to deliver a net cooling power of 111 W at ∼70 K to up to four experiments. The cooling system is a step towards meeting the practical challenges of operating large-scale quantum computers with many qubits.

Item Type: Article
Keywords: cryogenic ion-trap system, closed-loop cryogenic system, scalable quantum computing architecture
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 20 May 2022 09:52
Last Modified: 20 May 2022 10:00
URI: http://sro.sussex.ac.uk/id/eprint/106020

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