Abstract
The authors realize a flexible optical experiment system to simulate a wormhole by applying a two dimensional embedded curved waveguide. By observing the beam propagation in the waveguide, they demonstrate a strong gravitational effect on wavepackets around a wormhole and study the onset of a tidal force effect
Highlights
The detection of gravitational waves [1] and the imaging picture taken by the event horizon telescope [2] show remarkable achievement in observational astronomy, some of the unique properties of black holes are still very difficult to observe directly, such as Hawking radiation and its huge tidal force on light
In free space, optical information is transferred through wave packets
We hope that the optical wave packet does not spread and that it can support efficient information transfer
Summary
The detection of gravitational waves [1] and the imaging picture taken by the event horizon telescope [2] show remarkable achievement in observational astronomy, some of the unique properties of black holes are still very difficult to observe directly, such as Hawking radiation and its huge tidal force on light. Interesting phenomena such as wormholes [36], metric transitions [37,38], cosmological redshift [39], Einstein rings [40], Rindler space [41],uniform gravitational fields [42], and cosmic strings [43] were observed Optical structures such as curved waveguides [44,45,46,47], nonlocal media [5,48], and optical lattices [49,50] have been used to simulate these cosmic phenomena. One of the limitations of metamaterials that restricts us from exploring more complicated cases in gravitational fields is the demand for tremendous change in the refractive index, which requires a high level of material fabrication To overcome this difficulty, physicists have turned to the use of two-dimensional (2D) embedded curved surfaces to mimic gravitational fields [44,45,46,47]. The propagation of the optical wave packet and disrupts the optical information transfer
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