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By combining and processing the resulting patterns from many pairs of telescopes, an interferometer can assemble a detailed image of the source.

The team developed a photon-level interferometer that accurately records the statistics of photon counting, showcasing a signal-to-noise ratio at the fundamental limit.

"Our method overcomes the challenges of traditional spectral thermal imagers, which are often bulky and delicate due to their reliance on large filter wheels or interferometers," said research team leader Zubin Jacob from Purdue University.

However, producing images with an interferometer like the ones we are used to obtaining from single telescopes is not straightforward and very time-consuming.

According to quantum mechanics, if a photon is fired from the interferometer's starting point, through a beamsplitter, the particle should travel down one of the two corridors with equal probability.