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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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A scalable, self-analyzing digital locking system for use on quantum optics experiments.

B M Sparkes¹, H M Chrzanowski, D P Parrain

¹Centre for Quantum Computation and Communication Technology, Department of Quantum Science, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia.

The Review of Scientific Instruments

|August 3, 2011

Summary

This summary is machine-generated.

This study introduces a digital control system for quantum optics experiments, offering improved scalability and flexibility. The system enables automatic re-locking of optical components and includes analysis tools for optimizing performance and stability.

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Area of Science:

Quantum optics
Experimental physics
Digital control systems

Background:

Analog control systems in optics experiments present limitations in scalability, cost, and flexibility.
Integrating system information into a single location is challenging with traditional methods.

Purpose of the Study:

To present a freely available digital control system for quantum optics experiments.
To demonstrate automatic and sequential re-locking of optical components.
To showcase the benefits of digital control for characterizing quantum states.

Main Methods:

Development of a digital control system with automatic re-locking capabilities.
Utilization of inbuilt locking analysis tools, including a white-noise network analyzer.
Application of the digital system to an experiment for characterizing optical Schrödinger cat states.

Main Results:

The digital control system allows for automatic and sequential re-locking of optical components.
Inbuilt analysis tools aid in optimizing individual locks and verifying long-term system stability.
The system demonstrates practical benefits in a quantum optics experiment.

Conclusions:

Digital control offers significant advantages over analog systems for quantum optics experiments.
The developed system provides a flexible, scalable, and cost-effective solution.
The digital control system facilitates advanced quantum state characterization.