Wavelength-scale imaging of trapped ions using a phase Fresnel lens

Jechow, Andreas; Streed, Erik; Norton, B. G.; Petrasiunas, Matthew Joseph Paul; Kielpinski, David

doi:10.1364/ol.36.001371

Cited by 39 publications

(51 citation statements)

References 28 publications

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“…Note that this method which was demonstrated for the axial trapping direction here, can in principle be applied to any projection of an ion on the imaging plane. The use of high NA objectives with resolutions close to the diffraction limit [20,32] would allow to further improve on accuracy and to perform thermometry in steeper trapping potentials.…”

Section: Discussionmentioning

confidence: 99%

Sub-millikelvin spatial thermometry of a single Doppler-cooled ion in a Paul trap

et al. 2012

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We report on observations of thermal motion of a single, Doppler-cooled ion along the axis of a linear radio-frequency quadrupole trap. We show that for a harmonic potential the thermal occupation of energy levels leads to Gaussian distribution of the ion's axial position. The dependence of the spatial thermal spread on the trap potential is used for precise calibration of our imaging system's point spread function and sub-milliKelvin thermometry. We employ this technique to investigate the laser detuning dependence of the Doppler temperature.

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Section: Discussionmentioning

confidence: 99%

Sub-millikelvin spatial thermometry of a single Doppler-cooled ion in a Paul trap

et al. 2012

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“…This is a critical matching problem due to the small depth of focus in low aberration, large aperture ion imaging. 20 To guard against this possibility our five collimating optics were fabricated with focal lengths ranging from f = 58.6 to 62.6 μm in 1 μm steps. Stray electrical fields from the neighboring oven loading zone precluded the use of the nominal f 0 = 58.6 μm mirror site and instead experiments were performed on the f +1μm photon quantum interface M Ghadimi et al = 59.6 μm focal length collimator.…”

Section: Trap Fabricationmentioning

confidence: 99%

“…18 Previous efforts using diffractive lenses with traditional macro traps have demonstrated a 4.2% collection efficiency 19 in free space as well as near diffractionlimited imaging in both fluorescence 20 and absorption 21 modalities, the latter being important for implementing quantum photonic receivers without the need for ion-photon interaction enhancement by an optical cavity. 22 …”

Section: Introductionmentioning

confidence: 99%

Scalable ion–photon quantum interface based on integrated diffractive mirrors

et al. 2017

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Quantum networking links quantum processors through remote entanglement for distributed quantum information processing and secure long-range communication. Trapped ions are a leading quantum information processing platform, having demonstrated universal small-scale processors and roadmaps for large-scale implementation. Overall rates of ion-photon entanglement generation, essential for remote trapped ion entanglement, are limited by coupling efficiency into single mode fibers and scaling to many ions. Here, we show a microfabricated trap with integrated diffractive mirrors that couples 4.1(6)% of the fluorescence from a 174 Yb + ion into a single mode fiber, nearly triple the demonstrated bulk optics efficiency. The integrated optic collects 5.8(8)% of the π transition fluorescence, images the ion with sub-wavelength resolution, and couples 71(5)% of the collected light into the fiber. Our technology is suitable for entangling multiple ions in parallel and overcomes mode quality limitations of existing integrated optical interconnects.

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“…The second problem is that dielectric surfaces are susceptible to light-induced charging, which results in strong and difficult-to-control forces on the ions, inducing micromotion, large displacements, or even making the ions untrappable [79][80][81]. Nonetheless, these challenges have started to be addressed in the last several years by a number of groups integrating various optical elements with ion traps, including microfabricated phase Fresnel lenses [82,83], embedded micromirrors [84,85] and fibers [45,86], transparent trap electrodes [44], nanophotonic dielectric waveguides [87], macroscopic optical cavities [46,[88][89][90][91], and microscopic, fiber-based cavities [92].…”

Section: Incorporating Optical Componentsmentioning

confidence: 99%

Technologies for trapped-ion quantum information systems

Eltony

Gangloff

Shi

et al. 2016

Quantum Inf Process

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Scaling up from prototype systems to dense arrays of ions on chip, or vast networks of ions connected by photonic channels, will require developing entirely new technologies that combine miniaturized ion trapping systems with devices to capture, transmit, and detect light, while refining how ions are confined and controlled. Building a cohesive ion system from such diverse parts involves many challenges, including navigating materials incompatibilities and undesired coupling between elements. Here, we review our recent efforts to create scalable ion systems incorporating unconventional materials such as graphene and indium tin oxide, integrating devices like optical fibers and mirrors, and exploring alternative ion loading and trapping techniques.

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Wavelength-scale imaging of trapped ions using a phase Fresnel lens

Cited by 39 publications

References 28 publications

Sub-millikelvin spatial thermometry of a single Doppler-cooled ion in a Paul trap

Sub-millikelvin spatial thermometry of a single Doppler-cooled ion in a Paul trap

Scalable ion–photon quantum interface based on integrated diffractive mirrors

Technologies for trapped-ion quantum information systems

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