Low-loss low thermo-optic coefficient Ta2O5 on crystal quartz planar optical waveguides

Zhao, Qiancheng; Behunin, Ryan O.; Rakich, Peter T.; Chauhan, Nitesh; Isichenko, Andrei; Wang, Jiawei; Hoyt, Chad; Fertig, Chad; Lin, Mu Hong; Blumenthal, Daniel J.

doi:10.1063/5.0024743

Cited by 32 publications

(15 citation statements)

References 39 publications

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“…While these results provide an excellent starting point for integrated nonlinear photonics, Ta 2 O 5 has several other intriguing material properties that uniquely benefit integrated quantum photonics. Especially interesting in this regard are the record low thermo-optic coefficient [66], enabling stable operation of high quality-factor devices, in particular at cryogenic temperatures, and the extremely low intrinsic photoluminescence, which is an indispensable requirement when working at the single-photon level.…”

Section: Statusmentioning

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: Statusmentioning

confidence: 99%

2022 Roadmap on integrated quantum photonics

et al. 2022

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“…We measure the resonance FWHM to be 43.23 MHz at 1550 nm, as shown in Fig. 1(d), using a radio frequency calibrated unbalanced Mach-Zehnder interferometer (MZI) [34,35]. These measurements correspond to a loaded Q factor of 4.48×10 6 and an intrinsic Q factor of 8.11×10 6 , corresponding to a propagation loss of 3.3 dB/m.…”

Section: Fully Symmetric Molecule Design and Fabricationmentioning

confidence: 99%

Independently Coupled and PZT Controllable Photonic Integrated Three-Resonator Photonic Molecule

Wang

Liu

Zhao

et al. 2021

Conference on Lasers and Electro-Optics

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Photonic molecules can be used to realize complex optical energy states and modes, analogous to those found in molecules, with properties useful for applications like spectral engineering, analog computation, many body physics simulations, and quantum optics. It is desirable to implement photonic molecules using high quality factor (Q) photonic integrated ring resonators due to their narrow atom-like spectral resonance, tunability, and the ability to scale the number of resonators on a photonic circuit. However, in order to take full advantage of molecule spectral complexity and tuning degree of freedom, resonator structures should have full symmetry in terms of inter-resonator coupling and resonator-waveguide coupling as well as independent resonance tuning, and low power dissipation operation, in a scalable integration platform. To date, photonic molecule symmetry has been limited to dual-and triple-cavity geometries coupled to single-or dual-busses, and resonance tuning limited to dual resonator molecules. In this paper, we demonstrate a three-resonator photonic molecule, consisting of symmetrically coupled 8.11 million intrinsic Q silicon nitride rings, where each ring is coupled to the other two rings as well as to its own independent bus. The resonance of each ring, and that of the collective molecule, is controlled using low power dissipation, monolithically integrated thin-film lead zirconate titanate (PZT) actuators that are integrated with the ultralow loss silicon nitride resonators. This performance is achieved without undercut waveguides, yielding the highest Q to date for a PZT controlled resonator. This advance leads to full control of complex photonic molecule resonance spectra and splitting in a wafer-scale integration platform. The resulting six tunable supermodes can be fully controlled, including degeneracy, location and splitting as well as designed by a model that can accurately predict the energy modes and transmission spectrum and tunable resonance splitting. This symmetrically coupled three-resonator molecule opens the door to applications such as optical circulators, dispersion engineering, nonlinear frequency synthesis, analog computation and quantum photonic circuits and physics simulations that involve scalable number of molecules on chip.

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“…The return Stokes signal, S1, can be filtered using an integration compatible silicon nitride waveguide dual-bus filter 47 . 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 .…”

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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Low-loss low thermo-optic coefficient Ta2O5 on crystal quartz planar optical waveguides

Cited by 32 publications

References 39 publications

2022 Roadmap on integrated quantum photonics

2022 Roadmap on integrated quantum photonics

Independently Coupled and PZT Controllable Photonic Integrated Three-Resonator Photonic Molecule

Visible light photonic integrated Brillouin laser

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