paper

An Efficient Algorithm for Optimizing Adaptive Quantum Metrology Processes

arXiv:1104.3844 · doi:10.1103/PhysRevLett.107.233601

Abstract

Quantum-enhanced metrology infers an unknown quantity with accuracy beyond the standard quantum limit (SQL). Feedback-based metrological techniques are promising for beating the SQL but devising the feedback procedures is difficult and inefficient. Here we introduce an efficient self-learning swarm-intelligence algorithm for devising feedback-based quantum metrological procedures. Our algorithm can be trained with simulated or real-world trials and accommodates experimental imperfections, losses, and decoherence.

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