Probing surface charge densities on optical fibers with a trapped ion
We describe a novel method to measure the surface charge densities on optical fibers placed in the vicinity of a trapped ion, where the ion itself acts as the probe. Surface charges distort the trapping potential, and when the fibers are displaced, the ion's equilibrium position and secular mot...
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| creator | Ong, Florian R Schüppert, Klemens Jobez, Pierre Teller, Markus Ames, Ben Fioretto, Dario A Friebe, Konstantin Lee, Moonjoo Colombe, Yves Blatt, Rainer Northup, Tracy E |
| description | We describe a novel method to measure the surface charge densities on optical fibers placed in the vicinity of a trapped ion, where the ion itself acts as the probe. Surface charges distort the trapping potential, and when the fibers are displaced, the ion's equilibrium position and secular motional frequencies are altered. We measure the latter quantities for different positions of the fibers and compare these measurements to simulations in which unknown charge densities on the fibers are adjustable parameters. Values ranging from \(-10\) to \(+50\) e/\(\mu\)m\(^2\) were determined. Our results will benefit the design and simulation of miniaturized experimental systems combining ion traps and integrated optics, for example, in the fields of quantum computation, communication and metrology. Furthermore, our method can be applied to any setup in which a dielectric element can be displaced relative to a trapped charge-sensitive particle. |
| doi_str_mv | 10.48550/arxiv.2002.02245 |
| format | Article |
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Surface charges distort the trapping potential, and when the fibers are displaced, the ion's equilibrium position and secular motional frequencies are altered. We measure the latter quantities for different positions of the fibers and compare these measurements to simulations in which unknown charge densities on the fibers are adjustable parameters. Values ranging from \(-10\) to \(+50\) e/\(\mu\)m\(^2\) were determined. Our results will benefit the design and simulation of miniaturized experimental systems combining ion traps and integrated optics, for example, in the fields of quantum computation, communication and metrology. 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| subjects | Charge density Computer simulation Dielectrics Optical fibers Physics - Applied Physics Physics - Optics Physics - Quantum Physics Position measurement Quantum computing Surface charge |
| title | Probing surface charge densities on optical fibers with a trapped ion |
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