A roadmap to matter-wave interferometry with complex things and applications in quantum sensing

Markus Arndt

doi:10.1117/12.2616793

9 March 2022 A roadmap to matter-wave interferometry with complex things and applications in quantum sensing

Markus Arndt

Proceedings Volume PC12016, Optical and Quantum Sensing and Precision Metrology II; PC1201609 (2022) https://doi.org/10.1117/12.2616793
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

The wave-particle duality is a key concept of quantum physics and extending quantum superpositions to bodies of increasing mass and complexity has become a key goal to numerous research groups. Such experiments are motivated by the desire to probe and better understand the quantum-classical interface in advanced tests of spontaneous or gravity-induced wave function collapse and in the search for non-linear modifications of quantum theory. High mass interferometry has been proposed to serve in the search for light dark matter via weak recoil decoherence as well as in tests of the weak equivalence principle by comparing a large variety of quantum systems with very distinct internal composition, excitation, mass, shape or angular momentum. Here we discuss the experimental state of the art in high-mass matter-wave interferometry, as well as new perspectives from cluster and nanoparticle physics to push quantum superpositions by 3 to 4 orders of magnitude in mass or up to 6 orders of magnitude in 'macroscopicity'. We discuss different near-field interferometer configurations that shall become useful in near-future demonstrations of quantum phenomena with objects as diverse as proteins, metal clusters and dielectric nanoparticles.

Conference Presentation

Citation Download Citation

Markus Arndt "A roadmap to matter-wave interferometry with complex things and applications in quantum sensing", Proc. SPIE PC12016, Optical and Quantum Sensing and Precision Metrology II, PC1201609 (9 March 2022); https://doi.org/10.1117/12.2616793

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