BYU

Abstract by Richard Barney

Personal Infomation


Presenter's Name

Richard Barney

Co-Presenters

None

Degree Level

Undergraduate

Co-Authors

None

Abstract Infomation


Department

Physics and Astronomy

Faculty Advisor

Jean-Francois Van Huele

Title

Quantum Erasure with the Stern-Gerlach Effect

Abstract

Quantum erasure is one of the most surprising results in quantum information theory. It allows for the recovery of lost coherence through a series of entangling measurements. This leads to behavior where the future appears to affect the past. We examine a specific quantum erasure scheme where the Stern-Gerlach effect splits beams of quantum objects into multiple beams with defined spin. This entangles the spin of each quantum object with its position and allows for quantum erasure. An analytic expression for the time evolving wavefunction of a quantum object in this scheme is presented and visualizations of its evolving position probability distribution are shown.