New Paper in AVS Quantum Science

28.04.2022

A roadmap for universal high-mass matter-wave interferometry

A new Paper "A roadmap for universal high-mass matter-wave interferometry" is published in AVS Quantum Sci. 4, 020502 (2022).
F. Kialka, Y. Y. Fein, S. Pedalino, S. Gerlich, M. Arndt
DOI: 10.1116/5.0080940

Abstract:

Creating quantum superposition states of bodies with increasing mass and complexity is an exciting and important challenge. Demonstrating such superpositions is vital for understanding how classical observations arise from the underlying quantum physics. Here, we discuss how recent progress in macromolecule interferometry can be combined with the state of the art in cluster physics to push the mass record for matter-wave interference with wide state separation by 3 to 4 orders of magnitude. We show how near-field interferometers in different configurations can achieve this goal for a wide range of particle materials with strongly varying properties. This universality will become important in advanced tests of wave function collapse and of other modifications of quantum mechanics, as well as in the search for light dark matter and in tests of gravity with composite quantum systems.

Examples of possible three-grating Talbot–Lau interferometer arrangements: (a) horizontal particle beam with continuous, transverse gratings; (b) vertical particle beam with continuous, transverse gratings; (c) vertical particle beam with pulsed, transverse gratings; and (d) vertical particle beam with pulsed, longitudinal gratin