arXiv:2606.19947v1 Announce Type: cross Abstract: Reliable quantum control in the presence of decoherence requires policies that combat the effect of environmental noise on the controlled dynamics. Open quantum systems under continuous monitoring generate classical measurement records whose drift depends on the noise experienced by the system; the records of two evolutions sharing the same decoherence channels differ only in this drift, so Girsanov's theorem yields a closed-form, differentiable estimator of the KL divergence between their trajectory distributions. We instantiate this estimator
This research provides a theoretical advancement in quantum control, addressing a fundamental challenge in quantum computing which is currently experiencing significant R&D investment.
Reliable quantum control is a prerequisite for robust quantum computing, and this method offers a differentiable, closed-form approach to optimize against decoherence, which is a major hurdle.
The ability to more precisely and reliably control open quantum systems, especially in the presence of noise, could accelerate the development of fault-tolerant quantum computers.
- · Quantum computing researchers
- · Quantum hardware manufacturers
- · High-performance computing sector
- · Traditional high-performance computing
Improved stability and error correction in early quantum computing prototypes.
Faster timelines for achieving practical quantum advantage in specific applications.
Potential for new industries built on quantum simulation and optimization capabilities.
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