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Quantum computing with realistically noisy devices.

¹Mathematical and Computational Sciences Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA. knill@boulder.nist.gov

|March 4, 2005

Summary

This summary is machine-generated.

Fault-tolerant quantum computing enables accurate calculations despite high error probabilities per gate (EPG). This research presents a simple architecture allowing quantum computations with up to 3% EPG, paving the way for practical applications.

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Area of Science:

Quantum Computing
Information Science

Background:

Quantum computers promise to solve intractable problems but are limited by noisy quantum gates causing decoherence.
Fault-tolerant quantum computing aims to achieve accurate computations even with high error probabilities per gate (EPG).

Purpose of the Study:

To introduce a simple architecture for fault-tolerant quantum computing.
To demonstrate the feasibility of accurate quantum computation at high error probabilities per gate (EPG).

Main Methods:

Development of a novel, simple architecture for fault-tolerant quantum computing.
Analysis of the architecture's performance with varying error probabilities per gate (EPG).

Main Results:

The proposed architecture provides evidence for accurate quantum computing with error probabilities per gate (EPG) as high as three percent.
Non-trivial quantum computations are shown to be implementable at an EPG of one percent, assuming comparable quantum resources to current digital computers.

Conclusions:

Accurate quantum computing is achievable even with significant noise levels (high EPGs).
The developed architecture offers a practical pathway towards fault-tolerant quantum computing, potentially utilizing resources similar to today's computers.