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Current Trends in Atomic Physics$
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Antoine Browaeys, Thierry Lahaye, Trey Porto, Charles S. Adams, Matthias Weidemüller, and Leticia F. Cugliandolo

Print publication date: 2019

Print ISBN-13: 9780198837190

Published to Oxford Scholarship Online: July 2019

DOI: 10.1093/oso/9780198837190.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2022. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use.date: 04 July 2022

Matter-wave physics with nanoparticles and biomolecules

Matter-wave physics with nanoparticles and biomolecules

(p.367) 10 Matter-wave physics with nanoparticles and biomolecules
Current Trends in Atomic Physics

Christian Brand

Sandra Eibenberger

Ugur Sezer

Markus Arndt

Oxford University Press

The chapter discusses advances in matter-wave optics with complex molecules, generalizing Young’s double slit to high masses. The quantum wave-particle duality is visualized by monitoring the arrival patterns of molecules diffracted at nanomechanical masks. Each molecule displays particle behavior when it is localized on the detector; however, the overall interference pattern requires their delocalization in free flight. Internal particle properties influence the de Broglie waves in the presence of surfaces or fields—even in interaction with atomically thin gratings. To probe the quantum nature of high-mass molecules, universal beam splitters are combined in a multi-grating interferometer to observe high-contrast matter-wave fringes even for 500 K hot molecules, containing 810 atoms with a mass of 10 000 amu. The high sensitivity of the nanoscale interference fringes to deflection in external fields enables non-invasive measurements of molecular properties. The chapter concludes by discussing research on beam techniques that extend molecular quantum optics to large biomolecules.

Keywords:   matter-wave interferometry, molecular quantum optics, foundations of quantum mechanics, molecular beams, molecule metrology

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