Observation of geometric phases in quantum erasers

Abstract

We introduce a simple experiment involving a double-slit interferometer by which one can learn basic concepts of quantum interference such as which-path marking, quantum erasers, and geometric phases. Each of them exhibits seemingly mysterious phenomena in quantum physics. In our experiment, we use the double-slit interference of visible light with the polarization as an internal state to demonstrate the disappearance of fringes by which-path marking, recovery of interference using quantum erasers, and the rapid shifting of the fringe pattern induced by the geometric phase. We also present a simple theoretical analysis of an interferometer with an internal state.

7 pages, 14 figures

References in corpus (3)

• Ultrasensitive Beam Deflection Measurement via Interferometric Weak Value Amplification
• Weak measurements with a qubit meter
• Geometrical aspects of weak measurements and quantum erasers

Cited by in corpus (10)

• Colloquium: Understanding Quantum Weak Values: Basics and Applications
• Extracting joint weak values from two-dimensional spatial displacements
• Direct Characterization of Quantum Measurements using Weak Values
• Bloch sphere representation of three-vertex geometric phases
• Geometric description of modular and weak values in discrete quantum systems using the Majorana representation
• Quantification of Concurrence via Weak Measurement
• Nonlinear behavior of geometric phases induced by photon pairs
• Observation of nonlinear variations in three-vertex geometric phase in two-photon polarization qutrit
• Dual to the anomalous weak value effect of photon-polarisation separation
• Generalised Geometric Phase