Strong Coupling and Dark Modes in the Motion of a Pair of Levitated Nanoparticles
Year: 2025
Authors: Pontin A., Deplano Q., Ranfagni A., Marino F., Marin F.
Autors Affiliation: CNR INO, Largo Enrico Fermi 6, I-50125 Florence, Italy; Univ Firenze, Dipartimento Fis & Astron, Via Sansone 1, I-50019 Sesto Fiorentino, Italy; INFN, Sez Firenze, Via Sansone 1, I-50019 Sesto Fiorentino, Italy; European Lab Nonlinear Spect LENS, Via Carrara 1, I-50019 Sesto Fiorentino, Italy.
Abstract: We experimentally investigate a system composed of two levitating nanospheres whose motions are indirectly coupled via coherent scattering in a single optical cavity mode. The nanospheres are loaded into a double longitudinal tweezer created with two lasers at different wavelengths, where chromatic aberration leads to the formation of two separate trapping sites. We achieve strong coupling between each pair of modes in the transverse plane of the tweezer, and we show the emergence of dark modes in the overall coupled motion. The observed features are ubiquitous in a variety of classical and quantum systems. As such, our experiment will allow us to explore the classical analog of typically quantum dynamics, and in further developments to investigate the transition to the quantum domain.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 135 (7) Pages from: 73602-1 to: 73602-6
More Information: We acknowledge financial support from PNRR MUR (Ministero dell’Universita e della Ricerca) Project No. PE0000023-NQSTI and by the European Commission-EU under the Infrastructure I-PHOQS Integrated Infrastructure Initiative in Photonic and Quantum Sciences [IR0000016, ID D2B8D520, CUP D2B8D520].KeyWords: Quantum ControlDOI: 10.1103/t33b-f1b2
