Generating 614 nm Laser Light to Reset Barium Ion Qubits

Description/Abstract/Artist Statement

Trapped barium ions are a good candidate for realizing qubit, the fundamental unit of information in a quantum computer. A crucial step in the control of a qubit is a mechanism to reset its value to the ground state. In this project I generate 614 nm laser light necessary to perform the barium ion reset operation. To do this I begin with a 1228 nm laser and use a periodically poled lithium niobate (PPLN) waveguide device to perform second harmonic generation and produce 614 nm doubled frequency light. I characterized the laser output optical power as a function of laser diode current. I also evaluated the conversion efficiency of the PPLN device as a function of 1228 nm optical power. Estimates show that the resulting 614 nm optical power will allow suitably short qubit reset times.

Presenting Author Name/s

Lawrence Umali

Faculty Advisor/Mentor

Matt Grau

Faculty Advisor/Mentor Department

Physics

College Affiliation

College of Sciences

Presentation Type

Poster

Disciplines

Atomic, Molecular and Optical Physics | Optics

Session Title

Poster Session

Location

Learning Commons Lobby @ Perry Library

Start Date

3-30-2024 8:30 AM

End Date

3-30-2024 10:00 AM

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Mar 30th, 8:30 AM Mar 30th, 10:00 AM

Generating 614 nm Laser Light to Reset Barium Ion Qubits

Learning Commons Lobby @ Perry Library

Trapped barium ions are a good candidate for realizing qubit, the fundamental unit of information in a quantum computer. A crucial step in the control of a qubit is a mechanism to reset its value to the ground state. In this project I generate 614 nm laser light necessary to perform the barium ion reset operation. To do this I begin with a 1228 nm laser and use a periodically poled lithium niobate (PPLN) waveguide device to perform second harmonic generation and produce 614 nm doubled frequency light. I characterized the laser output optical power as a function of laser diode current. I also evaluated the conversion efficiency of the PPLN device as a function of 1228 nm optical power. Estimates show that the resulting 614 nm optical power will allow suitably short qubit reset times.