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Quantum 2.0 Conference and Exhibition

Generation of Squeezed State of Motion for Atoms in Optical Tweezers

Robert Leonard Martin, Sylvain de Léséleuc, Yuki Torii Chew, Takafumi Tomita, Tirumalasetty Panduranga Mahesh, Seiji Sugawa, Kenji Ohmori

Published Jan 1, 2023• 0 citations
Publisher

Abstract

To decrease quantum fluctuations of position of atoms in optical tweezers, we create squeezed state of motion. This opens the path for improved fidelity of operation with interacting Rydberg atoms.
DOI
10.1364/quantum.2023.qtu3a.11

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Optical tweezers are a powerful tool for the precise positioning of a variety of small objects, including single neutral atoms. Once trapped, atoms can be cooled to the motional ground state of the tweezers. For a more advanced control of their spatial wave function, we report here a simple method to squeeze their motion, and the protocol to measure the squeezing factor based on momentum spreading estimation. We explore the limitations set by the technical imperfections of the tweezers, as well as the more fundamental limit set by their anharmonicity, and finally demonstrate a squeezing of 5.4 dB. The implementation of motional squeezing allows us to push back the limit set by the position quantum noise and thus to explore more extreme situations requiring atoms positioned with nanometric precision.