Achieving Wideband Precision Vector Signal Analysis on Quantum Harmonic Oscillator Platforms
ORAL
Abstract
Despite unprecedented control over Quantum Harmonic Oscillators (QHOs) and their ubiquity in precision metrology, field sensing on QHO platforms has heretofore been limited to narrowband measurements about a static secular frequency.
Using a single trapped 40Ca+ ion, we demonstrate a novel technique that allows for wideband amplitude, frequency, and phase sensing of a field while retaining leading-edge sensitivities.
By applying quadrupole microwave fields about a dipole field of interest, we engineer a motional Raman transition that results in a phase-sensitive displacement.
As a proof-of-concept, we demonstrate commercial network analysis by reproducing the known transfer function of a filter element. We then showcase the potential for challenging in situ measurements by using our scheme to calibrate qubit control lines.
Benchmarking of our scheme further confirms the achievement of precisions and sensitivities beyond the standard quantum limit.
Our scheme is general and requires no apparatus beyond the addressing infrastructure of the QHO, and is thus easily extendable to other QHO platforms.
Using a single trapped 40Ca+ ion, we demonstrate a novel technique that allows for wideband amplitude, frequency, and phase sensing of a field while retaining leading-edge sensitivities.
By applying quadrupole microwave fields about a dipole field of interest, we engineer a motional Raman transition that results in a phase-sensitive displacement.
As a proof-of-concept, we demonstrate commercial network analysis by reproducing the known transfer function of a filter element. We then showcase the potential for challenging in situ measurements by using our scheme to calibrate qubit control lines.
Benchmarking of our scheme further confirms the achievement of precisions and sensitivities beyond the standard quantum limit.
Our scheme is general and requires no apparatus beyond the addressing infrastructure of the QHO, and is thus easily extendable to other QHO platforms.
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Publication: arXiv:2311.12263 [physics.atom-ph]
Presenters
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Clayton Z Ho
UCLA, University of California, Los Angeles
Authors
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Clayton Z Ho
UCLA, University of California, Los Angeles
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Grant D Mitts
UCLA
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Hao Wu
UCLA
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Eric R Hudson
UCLA, University of California Los Angeles