Empowering a qudit-based quantum processor by traversing the dual bosonic ladder

Long B. Nguyen (), Noah Goss (), Karthik Siva, Yosep Kim, Ed Younis, Bingcheng Qing, Akel Hashim, David I. Santiago and Irfan Siddiqi
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Long B. Nguyen: University of California
Noah Goss: University of California
Karthik Siva: University of California
Yosep Kim: Korea University
Ed Younis: Lawrence Berkeley National Laboratory
Bingcheng Qing: University of California
Akel Hashim: University of California
David I. Santiago: University of California
Irfan Siddiqi: University of California

Nature Communications, 2024, vol. 15, issue 1, 1-8

Abstract: Abstract High-dimensional quantum information processing has emerged as a promising avenue to transcend hardware limitations and advance the frontiers of quantum technologies. Harnessing the untapped potential of the so-called qudits necessitates the development of quantum protocols beyond the established qubit methodologies. Here, we present a robust, hardware-efficient, and scalable approach for operating multidimensional solid-state systems using Raman-assisted two-photon interactions. We then utilize them to construct extensible multi-qubit operations, realize highly entangled multidimensional states including atomic squeezed states and Schrödinger cat states, and implement programmable entanglement distribution along a qudit array. Our work illuminates the quantum electrodynamics of strongly driven multi-qudit systems and provides the experimental foundation for the future development of high-dimensional quantum applications such as quantum sensing and fault-tolerant quantum computing.

Date: 2024
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DOI: 10.1038/s41467-024-51434-2

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