💥 A major breakthrough towards miniature quantum computers

Traditionally, photons (the fundamental particles of light) are manipulated using bulky devices, particularly in the field of quantum computing. While effective, these methods face major limitations in terms of size and reliability.

Metasurfaces—ultra-thin surfaces engraved with nanoscale patterns—emerge as an elegant solution to overcome these obstacles.


A team of researchers from Harvard, led by Federico Capasso, has demonstrated the effectiveness of these metasurfaces in creating quantum states. Their work, published in Science, marks a significant step towards device miniaturization. These surfaces enable quantum operations with unmatched stability and robustness.

The implications of this research extend beyond quantum computing. Metasurfaces could also find applications in quantum sensing or 'lab-on-a-chip' devices. This technology promises to make quantum systems more accessible and easier to integrate into practical applications.

What is a metasurface?

A metasurface is an artificial material designed to manipulate electromagnetic waves in ways natural materials cannot. These surfaces are engraved with nanoscale patterns that influence light, allowing precise control over its phase, amplitude, and polarization.

Metasurfaces can perform optical functions with a thickness far less than that of traditional lenses. This makes them particularly attractive for applications where miniaturization is crucial, such as in wearable devices or satellites.

Unlike traditional optical systems, metasurfaces do not require precise component alignment. This feature significantly reduces manufacturing costs and enhances device robustness.

Their application in the quantum domain represents a major breakthrough, offering a new way to generate and manipulate quantum states of light.