Incorporation of erbium ions into thin-film lithium niobate integrated photonics

Abstract

As an active material with favorable linear and nonlinear optical properties, thin-film lithium niobate has demonstrated its potential in integrated photonics. Integration with rare-earth ions, which are promising candidates for quantum memories and transducers, will enrich the system with new applications in quantum information processing. Here, we investigate the optical properties at 1.5 micron wavelengths of rare-earth ions (Er${}^{3+}$) implanted in thin-film lithium niobate waveguides and micro-ring resonators. Optical quality factors near a million after post annealing show that ion implantation damage can be successfully repaired. The transition linewidth and fluorescence lifetime of erbium ions are characterized, revealing values comparable to bulk-doped crystals. The ion-cavity coupling is observed through a Purcell enhanced fluorescence, from which a Purcell factor of ~3.8 is extracted. This platform is compatible with top-down lithography processes and leads to a scalable path for controlling spin-photon interfaces in photonic circuits.

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Cited by in corpus (11)

• Integrated photonics on thin-film lithium niobate
• On-chip Erbium-doped lithium niobate microcavity laser
• A perspective on hybrid quantum opto- and electromechanical systems
• A single-frequency single-resonator laser on erbium-doped lithium niobate on insulator
• On-chip erbium-doped lithium niobate waveguide amplifiers
• Controlling single rare earth ion emission in an electro-optical nanocavity
• Noiseless photonic non-reciprocity via optically-induced magnetization
• On-chip ultra-narrow-linewidth single-mode microlaser on lithium niobate on insulator
• Single-frequency integrated laser on erbium-doped lithium niobate on insulator
• Integrated Photonic Platforms for Quantum Technology: A Review
• Integrated optical quantum memory controlled by electro-optic effect