Wideband and low-spurious optical waveform generator for optically addressable quantum systems manipulation and...

Area of Science:

• Quantum optics
• Laser physics
• Materials science

Background:

• Stable, high-power laser sources producing complex waveforms are essential for optical manipulation of quantum systems.
• Existing technologies like acousto-optic and electro-optic modulators have limitations in tuning range, bandwidth, or output power, hindering scalability in quantum applications.
• A significant gap exists in phase-stabilized waveform generation for the visible/near-infrared spectrum with sufficient optical power for quantum needs.

Purpose of the Study:

• To propose and develop a novel modulation and frequency conversion setup.
• To achieve phase-stabilized optical waveforms over several GHz in the visible or near-infrared region.
• To provide sufficient optical power for scalable quantum applications.

Main Methods:

• Generating optical waveforms at telecom wavelengths.
• Utilizing a sum frequency generation process to convert waveforms to desired emitter wavelengths.
• Employing tunable pump laser frequencies for broad compatibility with various quantum emitters.
• Demonstrating the system's capability in detecting and studying single erbium ions and generating signals for quantum memories.

Main Results:

• Successful generation of optical waveforms over a large frequency range with high spurious extinction ratio.
• Scalable architecture demonstrated for the entire visible/near-infrared region with high optical power.
• Detection and study of a single erbium ion in a nanoparticle.
• Generation of high-bandwidth signals at 606 nm, enabling frequency multiplexing for Pr³⁺:Y₂SiO₅ quantum memories.

Conclusions:

• The developed setup overcomes limitations of existing technologies, offering a versatile solution for quantum manipulation.
• This architecture provides a scalable pathway to high-power, phase-stabilized optical waveforms for diverse quantum applications.
• The demonstrated capabilities pave the way for advancements in quantum computing, sensing, and memory technologies.