Work

Wigner’s phase space current for variable beam splitters—seeing beam splitters in a new light

Year: 2024

Type: article

Abstract: Beam splitters allow us to superpose two continuous single-mode quantum systems. To study the behavior of their strong mode mixing dynamics, we consider variable beam splitters and their dynamics using Wigner’s phase space distribution, W , the evolution of which is governed by the continuity equation ∂∂ τ W =− ∇ ⋅ J . We derive the form of the corresponding Wigner current, J , of each outgoing mode after tracing out the other. The influence of the modes on each other is analyzed and visualized using their respective Wigner distributions and Wigner currents. This allows us to perform geometrical analyses of the mode interactions, casting new light on beam splitter behavior. Several of the presented results should be immediately testable in experiments.

Source: Journal of the Optical Society of America B

DOI: 10.1364/josab.545875

Authors: Ole Steuernagel, Ray-Kuang Lee

Language: English

Topic: Quantum Mechanics and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science and Technology Council, Ministry of Science and Technology, Taiwan, University of Tokyo, Institute for Cosmic Ray Research, University of Tokyo, Office of Naval Research, Army Research Office, Office of Naval Research Global

Awards: Development on the Instrumentations and Data Analyses for Advanced Gravitational Wave Detectors( III ), G5706492807, Quantum Photonic Chips and the Application of Integrated Multi-Channel Quantum Random Number Generators( II ), G6990010051, G7547012927, G8247751164, Integrated Photonic Quantum Computing Based on Non-Gaussian Continuous-Variable States with Error Code Correction( II )

OpenAlex ID: W4404716906

FWCI: 0.319

Cites: 47

Cited by: 2

Related to: 10