Cryogenic ion trap system for high-fidelity near-field microwave-driven quantum logic

• URL: http://arxiv.org/abs/2207.11364v1
• Date: Fri, 22 Jul 2022 22:39:00 GMT
• Title: Cryogenic ion trap system for high-fidelity near-field microwave-driven quantum logic
• Authors: M. A. Weber, C. L\"oschnauer, J. Wolf, M. F. Gely, R. K. Hanley, J. F. Goodwin, C. J. Ballance, T. P. Harty, D. M. Lucas
• Abstract summary: We report the design, fabrication, and characterization of a cryogenic ion trap system for quantum logic driven by near-field microwaves. The trap incorporates an on-chip microwave resonator with an electrode geometry designed to null the microwave field component that couples directly to the qubit. We map the microwave field using a single $43$Ca$+$ ion, and measure the ion trapping lifetime and motional mode heating rates for one and two ions.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We report the design, fabrication, and characterization of a cryogenic ion trap system for the implementation of quantum logic driven by near-field microwaves. The trap incorporates an on-chip microwave resonator with an electrode geometry designed to null the microwave field component that couples directly to the qubit, while giving a large field gradient for driving entangling logic gates. We map the microwave field using a single $^{43}$Ca$^+$ ion, and measure the ion trapping lifetime and motional mode heating rates for one and two ions.

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