Journal
PHYSICAL REVIEW LETTERS
Volume 116, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.116.147202
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Funding
- European Research Council (ERC StG Strong-Q) [676842]
- Netherlands Organisation for Scientific Research (NWO/OCW), Frontiers of Nanoscience program
- European Research Council (ERC) [676842] Funding Source: European Research Council (ERC)
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All quantum optomechanics experiments to date operate at cryogenic temperatures, imposing severe technical challenges and fundamental constraints. Here, we present a novel design of on-chip mechanical resonators which exhibit fundamental modes with frequencies f and mechanical quality factors Q(m) sufficient to enter the optomechanical quantum regime at room temperature. We overcome previous limitations by designing ultrathin, high-stress silicon nitride (Si3N4) membranes, with tensile stress in the resonators' clamps close to the ultimate yield strength of the material. By patterning a photonic crystal on the SiN membranes, we observe reflectivities greater than 99%. These on-chip resonators have remarkably low mechanical dissipation, with Q(m) similar to 10(8), while at the same time exhibiting large reflectivities. This makes them a unique platform for experiments towards the observation of massive quantum behavior at room temperature.
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