Contrast in Multipath Interference and Quantum Coherence
Kai von Prillwitz, {\L}ukasz Rudnicki, Florian Mintert
TL;DR
This paper establishes a rigorous link between the statistical features of interference patterns and the quantum coherence of the underlying states, showing that statistical moments can reliably characterize coherence even with imperfect data.
Contribution
It introduces a method to connect interference pattern statistics with quantum coherence, enabling reliable coherence assessment from imperfect measurements.
Findings
Statistical moments can characterize quantum coherence.
Reliable coherence detection is possible despite interference pattern inaccuracies.
Explicit examples demonstrate the method's effectiveness.
Abstract
We develop a rigorous connection between statistical properties of an interference pattern and the coherence properties of the underlying quantum state. With explicit examples, we demonstrate that even for inaccurate reconstructions of interference patterns properly defined statistical moments permit a reliable characterization of quantum coherence.
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