Stationary device reproduces a black-hole-inspired wave-amplification effect
Researchers at the Advanced Science Research Center at the CUNY Graduate Center report a stationary radio-frequency device that reproduced a wave-amplification effect inspired by theories of energy extraction from rotating black holes. A synchronized sequence of changes in a ring of electronic resonators created synthetic rotation, allowing selected electromagnetic waves to gain energy from the engineered modulation. The work, reported in Nature, is a laboratory analogue rather than energy extraction from a real black hole.
The story
Researchers at the Advanced Science Research Center at the CUNY Graduate Center report that they have observed a laboratory analogue of rotational super-radiance, a wave-amplification process associated with ideas developed by Roger Penrose and Yakov Zel'dovich. The experiment did not use a rotating object. Instead, the team built a radio-frequency ring made of electronic resonators and rapidly adjusted their properties in a synchronized sequence across space and time. That sequence produced a travelling pattern around the ring, so that electromagnetic waves interacted with the stationary device as if it were rotating extremely rapidly. According to the report, waves with suitable rotational characteristics drew energy from this synthetic, time-engineered rotation and emerged amplified. The researchers describe this as reproducing the essential physics of the Penrose-Zel'dovich process, in which rotation can transfer energy to a wave. The hardware remained stationary throughout; the effective rotation came from the programmed modulation of the system. The study is identified as “Observation of Floquet rotational super-radiance,” by Hadiseh Nasari, Hady Moussa, Yoshiaki Kasahara, Arno Thielens and Andrea Alù, and is listed in Nature. The reported platform uses engineered metamaterials to control wave propagation and is presented as an experimental route for examining extreme rotational dynamics under laboratory conditions.
Why it matters
Mechanical rotation places hard limits on experiments that seek to study how waves exchange energy with rapidly rotating systems. By replacing physical motion with a timed electronic pattern, the reported method makes that interaction adjustable in a laboratory environment. Researchers can vary the modulation and examine which wave modes are amplified, rather than inferring the effect from inaccessible astrophysical settings. The source identifies communications, optics, photonics and quantum science as possible areas of relevance, but it does not report a deployed application or quantify a practical performance advantage.
Evidence and context
Penrose proposed that energy could, in principle, be taken from a rotating black hole under particular conditions; Zel'dovich later described a wave-based analogue in which waves can be amplified by interaction with sufficiently rapid rotation. Directly testing such regimes with mechanically rotating objects has been difficult because physical rotation has practical limits. The reported experiment substitutes a programmed, travelling modulation in a metamaterial system for moving hardware, placing a black-hole-inspired wave effect within a controlled radio-frequency setup. The peer-reviewed paper is titled “Observation of Floquet rotational super-radiance” and is listed in Nature with DOI 10.1038/s41586-026-10725-y.
Limits and unknowns
The experiment does not extract energy from an actual black hole, nor does it demonstrate a finished communications, optical or quantum product. Its “rotation” is synthetic: rapidly synchronized changes in electronic resonators create a travelling pattern that waves experience as rotation. The supplied report says further work is needed before practical translation, leaving open questions about efficiency, scaling, noise, integration into photonic or quantum platforms, and which proposed applications can be realized. The laboratory result therefore supports a controlled analogue of the Penrose-Zel'dovich physics rather than a test of astrophysical black holes themselves.
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Stationary device reproduces a black-hole-inspired wave-amplification effect
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Highlights
- Lab device mimics black hole energy extraction
- Synthetic rotation through electronic modulation
- Wave amplification via engineered modulation
- Controlled lab study of wave dynamics
Transcript
Researchers created a stationary device mimicking energy extraction from rotating black holes.
They used synchronized electronic changes to simulate rapid rotation without moving parts.
This modulation amplified electromagnetic waves, reproducing Penrose-Zel'dovich wave energy transfer.
The experiment offers a controllable platform to study extreme rotational wave dynamics.
Further research is needed before practical applications in communications or quantum science.