General scheme of differential imaging employing weak measurement
Xiong Liu, An Wang, Junfan Zhu, Ling Ye, Rong-Chun Ge, Jinglei Du, Hong Zhang, Zhiyou Zhang
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 preselection of the ancilla. By choosing the postselection orthogonal to the preselection measurement, an effective imaging platform based on differential operations is achieved. Experimental results on both the Sagnac interferometer and ultrathin Wollaston prism demonstrate that our imaging scheme successfully yields the boundary information of complex geometric configurations.
Topics & Concepts
PhysicsInterferometryDifferential (mechanical device)Weak measurementOpticsCoupling (piping)Selection (genetic algorithm)Scheme (mathematics)PrismBoundary (topology)Computer scienceAlgorithmQuantum mechanicsMathematical analysisArtificial intelligenceMathematicsMechanical engineeringQuantumEngineeringThermodynamicsPhotonic and Optical DevicesMechanical and Optical ResonatorsQuantum Mechanics and Applications