Trap-integrated superconducting nanowire single-photon detectors for trapped-ion qubit state readout

Benedikt Hampel; Daniel H. Slichter; Dietrich Leibfried; Richard P. Mirin; Sae Woo Nam; Varun B. Verma

doi:10.1117/12.3014455

7 June 2024 Trap-integrated superconducting nanowire single-photon detectors for trapped-ion qubit state readout

Benedikt Hampel, Daniel H. Slichter, Dietrich Leibfried, Richard P. Mirin, Sae Woo Nam, Varun B. Verma

Proceedings Volume 13025, Advanced Photon Counting Techniques XVIII; 1302506 (2024) https://doi.org/10.1117/12.3014455
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

State readout of trapped-ion qubits is usually achieved by observing qubit-state-dependent fluorescence from the ion while driving an optical cycling transition with laser light. The integration of photon detectors for fluorescence detection into the ion trap itself may benefit the development of many-qubit setups for applications like quantum computing. Superconducting nanowire single-photon detectors (SNSPDs) are promising candidates for trap-integrated detectors for high-fidelity trapped-ion qubit state readout. However, the strong oscillating electromagnetic fields that are typically used to trap and manipulate ions can affect the function of the SNSPDs significantly. In this work, we demonstrate an improved design to integrate SNSPDs into linear rf ion traps that reduces the susceptibility of the SNSPDs to applied rf trapping potentials. Our measurement results represent an improvement in rf tolerance by an order of magnitude with an increase in operation temperature from 3.5K to 6K compared to previous work.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Benedikt Hampel, Daniel H. Slichter, Dietrich Leibfried, Richard P. Mirin, Sae Woo Nam, and Varun B. Verma "Trap-integrated superconducting nanowire single-photon detectors for trapped-ion qubit state readout", Proc. SPIE 13025, Advanced Photon Counting Techniques XVIII, 1302506 (7 June 2024); https://doi.org/10.1117/12.3014455

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