Researchers observed optical vortices—dark phase singularities—that can appear to move faster than light without carrying energy or information.
For more than a century, the speed of light has served as the universe’s most famous speed limit—an idea rooted in Einstein’s special relativity.
Misryoum now reports a provocative twist: an international team of physicists says “darkness” can move faster than light in a specific. physics-defined sense.. The work centers on optical vortices. also called phase singularities—dark spots that form inside a light wave as it twists.. At the heart of the phenomenon is a mathematical quirk of waves: the bright peaks and dark troughs cancel at the vortex core. leaving a region where the wave’s phase becomes undefined.. Under the right conditions, the position of that dark core can move more quickly than the light wave itself.
That distinction matters.. In everyday language, “faster than light” sounds like a loophole for sending messages or energy faster than causality allows.. The researchers argue the opposite: these particular dark features do not transport energy, mass, or information.. So while the vortex’s apparent motion can exceed light speed, it doesn’t function as a superluminal messenger.
Misryoum’s account describes how the team built an experimental “microscope” setup to watch these vortices directly in a material platform that can slow light down dramatically.. They used hexagonal boron nitride, a two-dimensional ceramic often explored for its ability to convert light into quasiparticles.. In this case, the system generates polaritons—hybrid excitations that combine light and matter.. Importantly. polaritons move far more slowly than light in vacuum. roughly around 100 times slower. which gives researchers a practical window to track rapid wave behaviors that would otherwise blur together.
The observations focused on how two vortex cores—carrying opposite “charges” in the phase pattern—approach each other.. Rather than drifting as separate features, the team reports that the singularities accelerated toward superluminal speeds before they were annihilated.. In wave physics. this kind of interaction is often where hidden structure becomes visible: the wave’s geometry reorganizes. and the singularities disappear through a process that preserves the overall consistency of the wave field.
A key part of the experiment was measurement.. The method allowed the team to extract the vortex velocity despite the underlying electromagnetic field evolving on tiny timescales.. Misryoum highlights that while the details are technical. the underlying achievement is more general: demonstrating a way to track “where the phase breaks” in real time in a physical material.. That capability could matter beyond this one result.
One reason physicists care about phase singularities is that similar mathematics shows up across many systems.. The researchers say their findings reveal universal laws shared by waves everywhere—from sound and fluid flow to superconductors and complex quantum materials.. The implication is that “optical” might be only the easiest language to observe the phenomenon.. If the same rules govern vortices in multiple media. then the methods developed here could become a toolkit for exploring fast dynamics in other branches of science.
Misryoum sees a second, more future-facing thread.. Tracking super-fast. non-energy-carrying wave features may help researchers probe hidden processes in physics. chemistry. and biology—especially in systems where certain “state changes” are carried not by heat or particles in the usual sense. but by phase. interference. and field structure.. There’s also a longer-term interest in quantum technologies.. Because phase and coherence are central to quantum information. being able to map how singularities move. interact. and vanish could offer new routes to encode or manipulate quantum information in materials.
Crucially, this result does not overturn relativity.. Instead, it clarifies a subtle but often misunderstood point about what can outrun light.. When researchers say “superluminal motion. ” the universe is not being rewritten so much as the meaning of speed is being refined for wave-structure landmarks.. In Misryoum’s framing. the loophole is real only in the narrow sense that a phase feature can move faster than light while remaining causally safe because it does not carry energy or information.
Darkness as a moving feature, not a carrier
Optical vortices are “dark” only in the sense of intensity: the wave structure cancels at the core.. But the important part is the phase singularity—the place where the wave’s phase structure winds around a point.. Misryoum emphasizes that it’s this geometrical marker, not a packet of energy, whose motion can be superluminal.
A slower platform makes the fast physics visible
By converting light into polaritons in hexagonal boron nitride. the team created an experimental environment where wave dynamics unfold on timescales they can resolve.. Misryoum notes that this kind of material-assisted slowdown is a recurring strategy in modern experiments: when nature runs too fast. researchers build systems that let them watch the underlying mechanics.
Why the result matters for the future of wave science
The most compelling impact of Misryoum’s report may be methodological.. If phase singularities can be measured with enough precision to reveal their motion. then similar experiments can be designed for other materials and wave systems.. That could strengthen the bridge between abstract wave theory and what can be engineered in labs—potentially influencing how scientists study fast microscopic dynamics and. down the road. how quantum devices control and read out phase information.