Multigrating design for integrated single-atom trapping, manipulation, and readout

Liu, Aiping; Liu, Jiawei; Wei, Peng,; Xu, Xin-Biao; Chen, Guangjie; Ren, Xuemei; Wang, Qin; Zou, Chang‐Ling

doi:10.1103/physreva.105.053520

Cited by 7 publications

(2 citation statements)

References 51 publications

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“…Such hybrid metaoptics PIC systems will be packaged together and can enable drastically miniaturized optical systems, with potential applications in beam steering, 7 – 10 generation of structured light, 11 optical trapping, and manipulation of cold atom qubits 12 – 14 To that end, researchers have already demonstrated focusing of light coupled from a PIC using metaoptics 7 , 10 , 15 – 18 Additionally, reseachers have demonstrated holography by fabricating metaoptics on top of a PIC 15 , 17 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional interface between integrated photonics and free space

et al. 2023

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The combination of photonic integrated circuits and free-space metaoptics has the ability to untie technological knots that require advanced light manipulation due to their conjoined ability to achieve strong light-matter interaction via wave-guiding light over a long distance and shape them via large space-bandwidth product. Rapid prototyping of such a compound system requires component interchangeability. This represents a functional challenge in terms of fabrication and alignment of high-performance optical systems. Here, we report a flexible and interchangeable interface between a photonic integrated circuit and the free space using an array of low-loss metaoptics and demonstrate multifunctional beam shaping at a wavelength of 780 nm. We show that robust and high-fidelity operation of the designed optical functions can be achieved without prior precise characterization of the free-space input nor stringent alignment between the photonic integrated chip and the metaoptics chip. A diffraction limited spot of ∼3 μm for a hyperboloid metalens of numerical aperture 0.15 is achieved despite an input Gaussian elliptical deformation of up to 35% and misalignments of the components of up to 20 μm. A holographic image with a peak signal-to-noise ratio of >10 dB is also reported.

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Section: Introductionmentioning

confidence: 99%

Multifunctional interface between integrated photonics and free space

et al. 2023

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“…[26,27,37] Additionally, these demonstrations are compatible with on-chip integrated devices for cooling, transport, and trapping of cold atoms. [39][40][41] In this Letter, we report on transporting free space cooled 87 Rb atoms towards a GaN-on-sapphire chip [38] with an optical conveyor belt. [22,[42][43][44] Successful atomic transport towards the chip is made possible by our platform's full optical accessibility and careful control of atomic motion with a conveyor belt.…”

mentioning

confidence: 99%

Transporting Cold Atoms towards a GaN-on-Sapphire Chip via an Optical Conveyor Belt

Wang

Chen

et al. 2023

Chinese Phys. Lett.

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Trapped atoms on photonic structures inspire many novel quantum devices for quantum information processing and quantum sensing. Here, we have demonstrated a hybrid photonic-atom chip platform based on a GaN-on-sapphire chip and the transport of an ensemble of atoms from free space towards the chip with an optical conveyor belts. Due to our platform’s complete optical accessibility and careful control of atomic motion near the chip with a conveyor belt, successful atomic transport towards the chip is made possible. The maximum transport efficiency of atoms is about 50% with a transport distance of 500 µm. Our results open up a new route toward the efficient loading of cold atoms into the evanescent-field trap formed by the photonic integrated circuits, which promises strong and controllable interactions between single atoms and single photons.

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On-chip converter of waveguide polarization mode to free-space optical angular momentum mode

liu

Wei

et al. 2022

Applied Physics Letters

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An integrated photonic device for converting on-chip waveguide modes to free-space optical angular momentum beams is proposed, which is composed of a polarization splitter rotator and a waveguide surface holographic grating. The output orbital angular momentum (OAM) state can be manipulated by the input polarization state. Therefore, the superposition of OAM states can be realized by controlling the on-chip input. According to the numerical results, the conversion efficiency of the transverse-magnetic (transverse-electric) mode to the optical angular momentum mode with [Formula: see text] is above 14% (18%), with the highest fidelity up to 0.84 and a working bandwidth of approximately 40 nm for a fidelity above 0.8. The proposed device provides a feasible information channel between the integrated optics and the free space and holds the potential for applications including the on-chip detection of the optical angular momentum beam.

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Multigrating design for integrated single-atom trapping, manipulation, and readout

Cited by 7 publications

References 51 publications

Multifunctional interface between integrated photonics and free space

Multifunctional interface between integrated photonics and free space

Transporting Cold Atoms towards a GaN-on-Sapphire Chip via an Optical Conveyor Belt

On-chip converter of waveguide polarization mode to free-space optical angular momentum mode

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