Rotating black hole geometries in a two-dimensional photon superfluid

David Vocke, Calum Maitland, Angus Prain, Kali E. Wilson, Fabio Biancalana, Ewan M. Wright, Francesco Marino, Daniele Faccio

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)
43 Downloads (Pure)


Photon fluids have recently found applications in the simulation of a variety of physical phenomena such as superfluidity, vortex instabilities, and artificial gauge theories. Here we experimentally demonstrate the use of a photon fluid for analog gravity, i.e., the study of the physics of curved spacetime in the laboratory. While most analog gravity experiments are performed in 1+1 dimensions (one spatial plus time) and thus can only mimic 1+1D spacetime, we present a (room-temperature) photon superfluid where the geometry of a rotating acoustic black hole can be realized in 2+1D dimensions by an optical vortex. By measuring the local flow velocity and speed of waves in the photon superfluid, we identify a 2D region surrounded by an ergosphere and a spatially separated horizon.
Original languageEnglish
Pages (from-to)1099-1103
Number of pages5
Issue number9
Publication statusPublished - 10 Sept 2018


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