Operation of an optical atomic clock with a Brillouin laser subsystem

Loh, William; Stuart, Jules; Reens, David; Bruzewicz, Colin; Braje, Danielle; Chiaverini, John; Juodawlkis, Paul W.; Sage, Jeremy; McConnell, Robert

doi:10.1038/s41586-020-2981-6

Cited by 76 publications

(37 citation statements)

References 45 publications

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“…New materials and device concepts will also be required to realize large arrays of optical switches having high extinction, low excess loss, and low static power dissipation. Transitioning from the lab to the field will require low-cost, environmentally robust subsystems such as ultra-narrow-linewidth lasers based on stimulated Brillouin scattering (SBS) in optical fibers [22,23] or ultralow-loss on-chip waveguides.…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

2022 Roadmap on integrated quantum photonics

et al. 2022

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Integrated photonics will play a key role in quantum systems as they grow from few-qubit prototypes to tens of thousands of qubits. The underlying optical quantum technologies can only be realized through the integration of these components onto quantum photonic integrated circuits (QPICs) with accompanying electronics. In the last decade, remarkable advances in quantum photonic integration have enabled table-top experiments to be scaled down to prototype chips with improvements in efficiency, robustness, and key performance metrics. These advances have enabled integrated quantum photonic technologies combining up to 650 optical and electrical components onto a single chip that are capable of programmable quantum information processing, chip-to-chip networking, hybrid quantum system integration, and high-speed communications. In this roadmap article, we highlight the status, current and future challenges, and emerging technologies in several key research areas in integrated quantum photonics, including photonic platforms, quantum and classical light sources, quantum frequency conversion, integrated detectors, and applications in computing, communications, and sensing. With advances in materials, photonic design architectures, fabrication and integration processes, packaging, and testing and benchmarking, in the next decade we can expect a transition from single- and few-function prototypes to large-scale integration of multi-functional and reconfigurable devices that will have a transformative impact on quantum information science and engineering.

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Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

2022 Roadmap on integrated quantum photonics

et al. 2022

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“…SBS emission in the visible has been achieved with fiber optic based resonators, exotic fiber, and bulk optic implementations 26 – 32 . Recently the coherence of a near infrared (NIR) fiber SBS laser was transferred to the visible to address the clock transition of strontium, however, this work required bulky, power inefficient, nonlinear frequency conversion 33 . To reduce system complexity and improve reliability, it is desirable to use a “direct-drive” approach, where the SBS laser directly emits at the desired visible wavelength, without intermediate conversion stages.…”

Section: Introductionmentioning

confidence: 99%

“…A tunable sideband, such as that generated by an acousto-optic modulator 48 , 49 (AOM), is locked to a silicon nitride waveguide optical reference cavity 50 , 51 to reduce the integral linewidth and provide the carrier stability needed to address the atomic optical clock transition. The stabilized 674 nm OLO can be coupled to a 88 Sr + ion in an electrostatic trap 33 , 52 using, for example, silicon nitride waveguide to free-space grating couplers 53 – 55 . Additional cooling and repump beams can be provided via lasers coupled to silicon nitride waveguides and free-space grating couplers 54 .…”

Section: Introductionmentioning

confidence: 99%

Visible light photonic integrated Brillouin laser

et al. 2021

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Narrow linewidth visible light lasers are critical for atomic, molecular and optical (AMO) physics including atomic clocks, quantum computing, atomic and molecular spectroscopy, and sensing. Stimulated Brillouin scattering (SBS) is a promising approach to realize highly coherent on-chip visible light laser emission. Here we report demonstration of a visible light photonic integrated Brillouin laser, with emission at 674 nm, a 14.7 mW optical threshold, corresponding to a threshold density of 4.92 mW μm−2, and a 269 Hz linewidth. Significant advances in visible light silicon nitride/silica all-waveguide resonators are achieved to overcome barriers to SBS in the visible, including 1 dB/meter waveguide losses, 55.4 million quality factor (Q), and measurement of the 25.110 GHz Stokes frequency shift and 290 MHz gain bandwidth. This advancement in integrated ultra-narrow linewidth visible wavelength SBS lasers opens the door to compact quantum and atomic systems and implementation of increasingly complex AMO based physics and experiments.

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“…Brillouin scattering involves light-sound interactions and has been used in nonlinear optics [1][2][3][4], microwave photonics [5], slow and fast light [6], lasing [7], sensing [8] and imaging [9,10]. It has been observed in various platforms, including optical fibres [8,[11][12][13][14], whisperinggallery-mode resonators [15][16][17][18] and integrated waveguides [19][20][21][22][23][24][25].…”

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confidence: 99%

Large evanescently-induced Brillouin scattering at the surrounding of a nanofibre

Yang

Gyger

Godet

et al. 2021

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Brillouin scattering has been widely exploited for advanced photonics functionalities such as microwave photonics, signal processing, sensing, lasing, and more recently in micro- and nano-photonic waveguides. So far, all the works have focused on the opto-acoustic interaction driven from the core region of micro- and nano-waveguides. Here we observe, for the first time, an efficient Brillouin scattering generated by an evanescent field nearby a sub-wavelength waveguide embedded in a pressurised gas cell, with a maximum gain coefficient of 18.90 ± 0.17 m^(-1)W^(-1). This gain is 11 times larger than the highest Brillouin gain obtained in a hollow-core fibre and 79 times larger than in a standard single-mode fibre. The realisation of strong free-space Brillouin scattering from a waveguide benefits from the flexibility of confined light while providing a direct access to the opto-acoustic interaction, as required in free-space optoacoustics such as Brillouin spectroscopy and microscopy. Therefore, our work creates an important bridge between Brillouin scattering in waveguides, Brillouin spectroscopy and microscopy, and opens new avenues in light-sound interactions, optomechanics, sensing, lasing and imaging.

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Operation of an optical atomic clock with a Brillouin laser subsystem

Cited by 76 publications

References 45 publications

2022 Roadmap on integrated quantum photonics

2022 Roadmap on integrated quantum photonics

Visible light photonic integrated Brillouin laser

Large evanescently-induced Brillouin scattering at the surrounding of a nanofibre

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