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Modern high-speed internet relies on light to transmit data through fiber-optic cables. However, converting optical signals into electrical ones for processing still requires further development.

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According to “SciTech Daily,” a research team at the University of Michigan has developed a fully optical switch. This device uses circularly polarized light within an optical cavity lined with ultra-thin semiconductor material to control optical signals without the need for electrical conversion.

The team designed this development so the device can function as a standard optical switch or an XOR switch, offering potential applications in fully optical computing and optical neural networks.

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Optical computing is less energy-intensive than electronic computing.

The team used two-dimensional materials to switch data with low energy per “bit,” addressing the critical issue of energy consumption. Using a helical laser pulse through an optical cavity lined with a single-molecule-thick layer of tungsten diselenide, they managed to modulate the signal light through the optical Stark effect, which also created a pseudo-magnetic field affecting electronic bands.

The strength generated by this effect reached “210 teslas,” influencing electron spin and breaking time-reversal symmetry.

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This means that the laws of physics differ when running the system forward or backward, unlike in the macroscopic world.

This achievement has implications for both fundamental science, by creating exotic states of matter, and technology, by enabling the control of a massive magnetic field. The research results hold significant potential for advancing scientific understanding and technological applications alike, opening new areas for exploration and development.