3D femtosecond laser fabrication of glass monolithic ion traps for quantum computing

Andrea Lovera; Enrico Casamenti; Cesare Alfieri; Edgar Brucke; Martin Wagener; Stephan Welte; Philip Leindecker; Ilia Sergachev; Moritz Fontboté-Schmidt; Jonathan Home; Julian Schmidt; Cornelius Hempel

doi:10.1117/12.3001670

13 March 2024 3D femtosecond laser fabrication of glass monolithic ion traps for quantum computing

Andrea Lovera, Enrico Casamenti, Cesare Alfieri, Edgar Brucke, Martin Wagener, Stephan Welte, Philip Leindecker, Ilia Sergachev, Moritz Fontboté-Schmidt, Jonathan Home, Julian Schmidt, Cornelius Hempel

Author Affiliations +

Proceedings Volume PC12874, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2024; PC1287404 (2024) https://doi.org/10.1117/12.3001670
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

In the fields of quantum computing and atomic clocks different technologies are competing to provide the best performances in terms of gate fidelity, coherence, and number of qubits. In this landscape, three-dimensional fabrication technologies bring an added value allowing more complex but precise electrode arrangements ideal for ion trapping. In this research, we present two 3D monolithic Paul traps produced in fused silica with femtosecond selective laser etching techniques, combined with metal coating. Monolithic design ensures intrinsic alignment of the trap electrodes down to the micron, being all produced in a single fabrication step. Precise alignment, combined with three-dimensional electrode arrangement, creates a disruptive advantage for quantum devices’ architecture. We will showcase the performance benchmarks of our traps, including the heating rate and trap harmonicity, using laser-cooled chains of Calcium ions.

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Andrea Lovera, Enrico Casamenti, Cesare Alfieri, Edgar Brucke, Martin Wagener, Stephan Welte, Philip Leindecker, Ilia Sergachev, Moritz Fontboté-Schmidt, Jonathan Home, Julian Schmidt, and Cornelius Hempel "3D femtosecond laser fabrication of glass monolithic ion traps for quantum computing", Proc. SPIE PC12874, Nanoscale and Quantum Materials: From Synthesis and Laser Processing to Applications 2024, PC1287404 (13 March 2024); https://doi.org/10.1117/12.3001670

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KEYWORDS

Ions

Fabrication

Femtosecond phenomena

Quantum computing

Electrodes

Glasses

Atomic clocks

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