Searching for Vector Dark Matter with an Optomechanical Accelerometer

Jack Manley, Mitul Dey Chowdhury, Daniel Grin, Swati Singh, Dalziel J. Wilson

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


We consider using optomechanical accelerometers as resonant detectors for ultralight dark matter. As a concrete example, we describe a detector based on a silicon nitride membrane fixed to a beryllium mirror, forming an optical cavity. The use of different materials gives access to forces proportional to baryon (B) and lepton (L) charge, which are believed to be coupling channels for vector dark matter particles ("dark photons"). The cavity meanwhile provides access to quantum-limited displacement measurements. For a centimeter-scale membrane precooled to 10 mK, we argue that sensitivity to vector B-L dark matter can exceed that of the Eöt-Wash experiment in integration times of minutes, over a fractional bandwidth of ∼0.1% near 10 kHz (corresponding to a particle mass of 10-10 eV/c2). Our analysis can be translated to alternative systems, such as levitated particles, and suggests the possibility of a new generation of tabletop experiments.

Original languageEnglish (US)
Article number061301
JournalPhysical review letters
Issue number6
StatePublished - Feb 10 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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