Low-Crosstalk Silicon Fabricated Optical Waveguides for Laser Delivery to Matter Qubits
ORAL
Abstract
Abstract:
Matter qubits often rely on light delivery to induce changes in qubit states, which requires precisely applied external fields. The presence of unintended light, such as scatter from the laser source or output crosstalk could lead to unexpected qubit excitations, which destroys coherence and lowers fidelity of the system. Although the quality of these quantum systems depends on precisely targeting qubits at the µm scale often used in quantum networking schemes, it remains a difficult optical engineering challenge. We detail our efforts to produce a foundry-produced, micro-fabricated silicon nitride (SiN) optical waveguide to lower the intrinsic crosstalk of directly addressing unequally spaced trapped ions, which serve as model qubits for this system. Previous efforts to mitigate unintended crosstalk using optical splitters systems have been limited to order -40 dB which we surpass. The design improvements here pave the way for large scale light delivery with low crosstalk by improving chip architecture commonly utilized by these waveguide devices. Approved for Public Release; Distribution Unlimited: AFRL-2023-6150 / 2023-1138
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Presenters
Clayton Craft
AFRL
Air Force Research Laboratory
Authors
Clayton Craft
AFRL
Air Force Research Laboratory
David Hucul
AFRL
Zachary S Smith
Air Force Research Lab
Air Force Research Laboratory
Andrew Klug
Technergetics; Air Force Research Laboratory
AFRL
Nicholas J Barton
Murray Associates of Utica; Air Force Research Laboratory
AFRL
Air Force Research Lab
Paul M Alsing
Air Force Research Laboratory
Air Force Research Lab
Pramod Asagodu
Griffiss Institute, Air Force Research Laboratory
AFRL
Air Force Research Lab
Griffiss Institute; Air Force Research Laboratory
Richard Birrittella
AFRL
National Academy of Sciences; Air Force Research Laboratory
A. Brownell
Murray Associates of Utica; Air Force Research Laboratory
AFRL
Air Force Research Lab
Vekatesh Deenadayalan
Microsystems Engineering; Rochester Institute of Technology
Rochester Institute of Technology
Microsystems Engineering
M. L Fanto
Air Force Research Laboratory
AFRL
Air Force Research Lab
Gregory A Howland
Microsystems Engineering; Rochester Institute of Technology
Rochester Institute of Technology
Microsystems Engineering
Michael Macalik
AFRL
Air Force Research Lab
Evan Manfreda-Schulz
Microsystems Engineering; Rochester Institute of Technology
Rochester Institute of Technology
Microsystems Engineering
Garrett Percevault
Air Force Research Laboratory
AFRL
Air Force Research Lab
Nikola Porto
AFRL
Stefan F Preble
Microsystems Engineering; Rochesters Institute of Technology
Rochester Institute of Technology
Microsystems Engineering
Microsystems Engineering; Rochester Institute of Technology
