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Designing quantum memories with embedded control: photonic circuits for autonomous quantum error correction.

Joseph Kerckhoff¹, Hendra I Nurdin, Dmitri S Pavlichin

¹Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA. jkerc@stanford.edu

Physical Review Letters

|September 28, 2010

Summary

This study introduces a novel quantum error correction method using continuous syndrome readout. It offers an autonomous, on-chip quantum memory solution ideal for solid-state qubit systems.

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Area of Science:

Quantum Information Science
Quantum Computing
Solid-State Physics

Background:

Quantum error correction is crucial for scalable quantum computing.
Current methods often rely on discrete measurements and complex control logic.
Developing autonomous and integrated quantum memory solutions is a key challenge.

Purpose of the Study:

To propose a new quantum error correction approach.
To replace traditional discrete measurement and restoration steps with continuous physical processing.
To design an autonomous, on-chip quantum memory compatible with solid-state qubits.

Main Methods:

Utilizing coding and continuous syndrome readout via scattering of coherent probe fields.
Implementing direct physical processing of probe beams.

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Employing coherent feedback to register qubits.

Main Results:

The proposed approach integrates measurement and correction into a continuous process.
It eliminates the need for external clocking or control logic.
The method is well-suited for solid-state qubits in planar electromagnetic circuits.

Conclusions:

This work presents a pathway towards more robust and integrated quantum memory systems.
The continuous readout and feedback mechanism simplifies quantum error correction implementation.
The approach facilitates the development of autonomous quantum computing architectures.