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Rotating black hole geometries in a two-dimensional photon superfluid
Optica ( IF 10.4 ) Pub Date : 2018-09-10 , DOI: 10.1364/optica.5.001099
David Vocke , Calum Maitland , Angus Prain , Kali E. Wilson , Fabio Biancalana , Ewan M. Wright , Francesco Marino , Daniele Faccio

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.

中文翻译:

二维光子超流体中的旋转黑洞几何

光子流体最近在模拟多种物理现象(例如超流动性,涡旋不稳定性和人工量规理论)中得到了应用。在这里,我们通过实验证明了将光子流体用于模拟重力,即在实验室中研究弯曲时空的物理原理。虽然大多数模拟重力实验都是在1个+1个 维度(一个空间加上时间),因此只能模仿 1个+1个d 时空,我们提出了一个(室温)光子超流体,在其中可以实现旋转声黑洞的几何形状 2个+1个d光学旋涡的尺寸。通过测量光子超流体中的局部流速和波速,我们确定了一个由人体工圈和空间分隔的视界包围的2D区域。
更新日期:2018-09-21
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