Compact Ion-Trap Quantum Computing Demonstrator

By I. Pogorelov, T. Feldker, Christian D. Marciniak, L. Postler, G. Jacob, O. Krieglsteiner, Verena Podlesnic, Michael Meth, V. Negnevitsky, M. Stadler and 6 more. PRX Quantum, 2021

312 citations recorded by the source corpus.

Quantum information processing is steadily progressing from a purely academic discipline towards applications throughout science and industry. Transitioning from lab-based, proof-of-concept experiments to robust, integrated realizations of quantum information processing hardware is an important step in this process. However, the nature of traditional laboratory setups does not offer itself readily to scaling up system sizes or allow for applications outside of laboratory-grade environments. This transition requires overcoming challenges in engineering and integration without sacrificing the state-of-the-art performance of laboratory implementations. Here, we present a 19-inch rack quantum computing demonstrator based on $^{40}\textrm{Ca}^+$ optical qubits in a linear Paul trap to address many of these challenges. We outline the mechanical, optical, and electrical subsystems. Further, we describe the automation and remote access components of the quantum computing stack. We conclude by describing characterization measurements relevant to digital quantum computing including entangling operations mediated by the Molmer-Sorenson interaction. Using this setup we produce maximally-entangled Greenberger-Horne-Zeilinger states with up to 24 ions without the use of post-selection or error mitigation techniques; on par with well-established conventional laboratory setups.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/74b63c4cdc719a646ce014d084a0ce0ac66d9139

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

A universal qudit quantum processor with trapped ions (2021, background): “This could be further reduced by several orders of magnitude with improved addressing optics [30].”
Demonstration of fault-tolerant universal quantum gate operations (2021, methodology): “Further details on the experimental setup can be found in the recent publication [33].”