Author

Peter L. McMahon

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Preprint Sep 2026

Experimental quantum-computing-enhanced sensing using Grover's algorithm

The combination of quantum sensing with quantum computing to provide an enhancement over conventional quantum sensing has recently emerged as a promising potential application of quantum computing that could give advantages without needing large-scale or fault-tolerant hardware. In this work, we report an experimental...

Mathieu Ouellet, Purnendu Sen, Xiang-Qin Wang et al. · 0 citations

Preprint Aug 2026

Quantum sensors that compute: quantum computational magnetic-field sensing using a superconducting qubit

A measurement of a single-qubit quantum sensor reveals at most 1 bit of information about the signal that was sensed. To perform a classification task on the signal, the conventional approach is to repeat a sensing protocol many times, averaging the measurement results to obtain a high-precision estimate of the sensed...

Purnendu Sen, Mathieu Ouellet, Saeed A. Khan et al. · 5 citations

Preprint Aug 2026

Exponential quantum advantage for learning signals with a single qubit

Quantum technology has the potential to transform scientific discovery, but quantum advantages often require processing capabilities well beyond the reach of experimental platforms. We show that coupling a single controllable qubit to an otherwise conventional sensor can exponentially reduce the number of measurements...

Ishaan Kannan, Sridhar Prabhu, Saeed A. Khan et al. · 5 citations