Abstract by Richard Barney
Physics and Astronomy
Jean-Francois Van Huele
Quantum Erasure with the Stern-Gerlach Effect
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.