A general scheme of differential imaging employing weak measurement

TL;DR

This paper introduces a novel differential imaging scheme using weak measurement principles, demonstrating effective boundary detection in complex geometries through experimental setups with interferometers and prisms.

Contribution

It presents a general weak measurement-based differential imaging method with experimental validation, expanding imaging capabilities for complex structures.

Findings

Successfully detected boundary information in complex geometries

Implemented the scheme with Sagnac interferometer and Wollaston prism

Achieved differential imaging through weak measurement techniques

Abstract

We propose and experimentally realize a general scheme of differential imaging employing the idea of weak measurement. We show that the weak coupling between the system of interest and a two-level ancilla can introduce a two-beam circuit after an arbitrary pre-selection of the ancilla. By choosing the post-selection orthogonal to the pre-selection measurement, an effective imaging platform based on differential operations is shown achieved. Experimental results on both the Sagnac interferometer and ultra-thin Wollaston prism demonstrate that our imaging scheme successfully yields the boundary information of complex geometric configurations.