Work

Interferometric Amplification and Suppression of External Beam Shifts

Year: 2025

Type: article

Abstract: Interferometers are known for precise measurements of the effects inside of them. Here we show that placing a Dove prism in one of the interferometer arms allows for also detecting minute effects happening outside the device. We derive how the additional reflection in one arm can amplify small tilts or displacements of the input beam in the dark output port of the interferometer, in analogy to weak value amplification. The experiment demonstrates a clear improvement of the measurement signal. Moreover, in the bright output port, small disturbances in the input beam get largely filtered, thereby enabling beam stabilization with a fully passive device.

Source: Physical Review Letters

DOI: 10.1103/fggq-yhz8

Authors: Carlotta Versmold, Jan Dziewior, Florian Huber, Elina Köster, Gregory Reznik, Lev Vaidman, Harald Weinfurter

Institutions: Max Planck Institute of Quantum Optics, Munich Center for Quantum Science and Technology, Ludwig-Maximilians-Universität München, Tel Aviv University, Chapman University

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: Deutsche Forschungsgemeinschaft, Israel Science Foundation, Bundesministerium für Forschung und Technologie, Bayerisches Staatsministerium für Wissenschaft und Kunst