Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Quantum collective motion of macroscopic mechanical oscillators
Science ( IF 44.7 ) Pub Date : 2024-12-19 , DOI: 10.1126/science.adr8187 Mahdi Chegnizadeh, Marco Scigliuzzo, Amir Youssefi, Shingo Kono, Evgenii Guzovskii, Tobias J. Kippenberg
Science ( IF 44.7 ) Pub Date : 2024-12-19 , DOI: 10.1126/science.adr8187 Mahdi Chegnizadeh, Marco Scigliuzzo, Amir Youssefi, Shingo Kono, Evgenii Guzovskii, Tobias J. Kippenberg
Collective phenomena arise from interactions within complex systems, leading to behaviors absent in individual components. Observing quantum collective phenomena with macroscopic mechanical oscillators has been impeded by the stringent requirement that oscillators be identical. We demonstrate the quantum regime for collective motion of N = 6 mechanical oscillators, a hexamer, in a superconducting circuit optomechanical platform. By increasing the optomechanical couplings, the system transitions from individual to collective motion, characterized by a N enhancement of cavity-collective mode coupling, akin to superradiance of atomic ensembles. Using sideband cooling, we prepare the collective mode in the quantum ground state and measure its quantum sideband asymmetry, with zero-point motion distributed across distant oscillators. This regime of optomechanics opens avenues for studying multipartite entanglement, with potential advances in quantum metrology.
更新日期：2024-12-19
京公网安备 11010802027423号