Quantum Computers Gain Noise Resilience Through Geometric Pulse Design

Virginia Tech researchers develop a method to suppress errors in quantum computations.

Apr. 2, 2026 at 1:24pm

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Researchers from Virginia Tech have developed a quantum control method based on geometric pulse design that suppresses noise in qubits, improving the reliability of quantum computations. The approach maps electromagnetic control pulses to underlying geometric shapes, allowing researchers to tune pulse parameters to reduce errors without the previously assumed trade-off between precision and noise. The method was experimentally validated on IBM quantum hardware, demonstrating improved noise tolerance and suggesting a practical path toward more stable, large-scale quantum computers.

Why it matters

Noise and errors are major obstacles to building large-scale, reliable quantum computers. This new geometric pulse design technique offers a promising solution to improve the noise tolerance of quantum hardware, bringing us closer to the realization of practical quantum computing.

The details

The researchers' approach maps the electromagnetic control pulses used to manipulate qubits into an underlying geometric framework. By adjusting the shape of the 3D space curve that defines the pulse, they can optimize the pulse parameters to suppress noise without compromising precision. This allows them to overcome the previously assumed trade-off between noise and control accuracy in quantum control techniques.

  • The research was published in the Nature Partner Journal Quantum Information in April 2026.

The players

Evangelos Piliouras

A graduate student at Virginia Tech who co-developed the geometric pulse design method.

Ed Barnes

A physicist at Virginia Tech who collaborated with Piliouras on the research.

Hisham Amer

Another Virginia Tech graduate student who experimentally validated the method on IBM quantum hardware.

IBM

The company whose quantum computing hardware was used to test the geometric pulse design technique.

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What they’re saying

“We've been surprised multiple times by how simple and elegant the requirements for noise suppression become once we translate them into this geometric language.”

— Ed Barnes, Physicist, Virginia Tech

“The blessing and the curse of quantum control is that you have infinitely many ways to achieve the same task, but nobody tells you the best way.”

— Evangelos Piliouras, Graduate Student, Virginia Tech

What’s next

The researchers plan to continue refining and expanding their geometric pulse design method to further improve the noise tolerance and reliability of quantum computations, with the goal of enabling the development of large-scale, practical quantum computers.

The takeaway

This new quantum control technique based on geometric pulse design represents a significant step forward in addressing the critical challenge of noise and errors in quantum hardware, bringing us closer to the realization of scalable and reliable quantum computing.