New horizons in astronomy: quantum methods have created clear images of space

Scientists and experts argue about the technological leap in cosmology

Astronomers are considering advanced quantum technologies to improve the resolving power of telescopes. The approach involves combining light from telescopes separated by hundreds of kilometers to reveal details of distant astronomical objects.

In the field of optical and infrared astronomy, scientists are exploring the possibility of synergies between traditional telescopic techniques and quantum technologies. During a recent meeting at the US research center NOIRLab, an initiative led by a group of astronomers was discussed that could revolutionize the ability to observe distant celestial objects.

The method under consideration will use quantum memory capable of storing the subtle quantum states of photons over significant distances to produce highly detailed images. While current optical interferometers have difficulty covering distances of a few hundred meters, the use of quantum storage devices and networks could extend this capability to hundreds of kilometers.

Astronomers could potentially extract descriptive details about exoplanets by visualizing phenomena such as atmospheres, seasonal variations, and even signs of habitability. Likewise, this method could offer a more thorough study of the esoteric regions around supermassive black holes.

A new alternative to storing and combining photon states is the use of quantum entanglement, a phenomenon that may seem like a product of science fiction, but is a cornerstone of quantum mechanics. By linking photon states between distant telescopes, researchers could process information comparablely as if they were physically in the same place.

Discussions between astronomers and quantum experts aim to expand the laboratory’s success stories to astronomical proportions, with ambitions of creating a demonstration project potentially heralding a new era of quantum-based astronomical observation by the 2030s. These advances promise leaps in understanding of the cosmos, setting the stage for discoveries that once seemed beyond the pale.

Despite the exciting promise of quantum-enabled telescopic networks, significant challenges remain. Current quantum storage technologies have limitations that need to be addressed, and the durability of quantum devices under varying environmental conditions poses additional hurdles. Innovations in the reliability and capacity of quantum storage systems will be essential to move from laboratory experiments to real-world astronomical applications.