Topologically protected chainwise microwave-to-optical photon conversion interfaced by nitrogen-vacancy center...

Area of Science:

• Quantum physics
• Condensed matter physics
• Quantum information science

Background:

• The Su-Schrieffer-Heeger (SSH) model offers topologically protected edge states for robust quantum state transfer (QST).
• Hybrid quantum systems combine advantageous features from different physical platforms.
• Efficient quantum interfaces are vital for quantum communication and computing.

Purpose of the Study:

• To propose a topological quantum state transfer protocol for microwave (MW)-to-optical photon conversion.
• To utilize a synthesized SSH chain within a hybrid quantum system.
• To enhance the efficiency and scalability of MW-to-optical photon conversion.

Main Methods:

• Constructing a topological SSH chain by coupling superconducting resonators with optical cavities via nitrogen-vacancy center ensembles.
• Employing power-law coupling engineering to reduce the adiabatic evolution duration.
• Implementing a hybrid system integrating superconducting and optical components.

Main Results:

• Demonstrated a high-efficiency MW-to-optical photon conversion protocol.
• Achieved improved scalability of the transducer concerning system size and photon number.
• Shortened the adiabatic evolution time threshold through coupling engineering.

Conclusions:

• The proposed topological protocol facilitates efficient quantum interfaces between MW quantum circuits and optical networks.
• This advancement is essential for long-distance quantum communication and distributed quantum computing.
• The hybrid system approach offers a promising route for scalable quantum transduction.