High-bandwidth CMOS-voltage-level electro-optic modulation of 780 nm light in thin-film lithium niobate

Abstract

Integrated photonics operating at visible-near-infrared (VNIR) wavelengths offer scalable platforms for advancing optical systems for addressing atomic clocks, sensors, and quantum computers. The complexity of free-space control optics causes limited addressability of atoms and ions, and this remains an impediment on scalability and cost. Networks of Mach-Zehnder interferometers can overcome challenges in addressing atoms by providing high-bandwidth electro-optic control of multiple output beams. Here, we demonstrate a VNIR Mach-Zehnder interferometer on lithium niobate on sapphire with a CMOS voltage-level compatible full-swing voltage of 4.2 V and an electro-optic bandwidth of 2.7 GHz occupying only 0.35 mm${}^2$. Our waveguides exhibit 1.6 dB/cm propagation loss and our microring resonators have intrinsic quality factors of 4.4 $\times$ 10${}^5$. This specialized platform for VNIR integrated photonics can open new avenues for addressing large arrays of qubits with high precision and negligible cross-talk.

10 pages, 4 figures

References in corpus (5)

• Monolithic Ultrahigh-Q Lithium Niobate Microring Resonator
• High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
• Ultra-low loss integrated visible photonics using thin-film lithium niobate
• Analysis of silicon nitride partial Euler waveguide bends
• Mitigating photorefractive effect in thin-filmlithium niobate microring resonators

Cited by in corpus (7)

• Sub-1 Volt and High-Bandwidth Visible to Near-Infrared Electro-Optic Modulators
• Integrated Quantum Optical Phase Sensor
• High Modulation Efficiency and Large Bandwidth Thin-Film Lithium Niobate Modulator for Visible Light
• High-Performance Silicon Photonic Single-Sideband Modulators for Cold Atom Interferometry
• An integrated photonic engine for programmable atomic control
• A fiber array architecture for atom quantum computing
• On-chip 7 GHz acousto-optic modulators for visible wavelengths