Charging technology for smartphones has been improving and finally, some companies have introduced super-fast wireless charging technologies, which had been quite slow until now. In line with that development, it seems that charging a smartphone from across the device could also be possible.

Scientists have developed a new device named “anti-laser” which is claimed to be able to perfectly beam energy across any room. This invisible beam energy can power a phone or laptop across the room without plugging it in.

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Similar to how a laser emits light particles or photons one after another in an orderly row, this new anti-laser device works exactly the opposite of that. It sucks up photons one after another in reverse order.

In a demonstration of this technology, scientists showcased anti-lasers receivers being able to receive around 99.996 percent of the sent power, even during situations like electronics moving around, objects getting in the way, and more.

The method, which is being termed as Coherent Perfect Absorption (CPA), uses one machine to send power and another to receive it. However, there’s one major limitation to this. It requires time-reversal symmetry which only happens in systems without much entropy. This new CPA method used magnetic fields to jostle photos so aggressively that the time-reversal symmetry was lost.

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