Quantum collective motion of macroscopic mechanical oscillators
arXiv:2407.02453 · doi:10.1126/science.adr8187
Abstract
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. Here, we demonstrate the quantum regime for collective motion of 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 enhancement of cavity-collective mode coupling, akin to super-radiance 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 multi-partite entanglement, with potential advances in quantum metrology.
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Cited by in corpus (5)
- Observation of multiple time crystals in a driven-dissipative system with Rydberg gas
- Manipulating Topological Polaritons in Optomechanical Ladders
- The quantum state of light in collective spontaneous emission
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