[astro-ph.IM] Detecting terrestrial exoplanets in the habitable zones of nearby stars remains a critical challenge. Such planets can be 10^8 10^10 times fainter than their host stars and lie at […]
![Adaptive quantum measurement framework and exoplanet detection challenge. (a) Schematic of the proposed method. Photons from an unknown multi-source scene are projected by an adaptive mode sorter onto a basis {ϕ1, . . . , ϕM} maximizing QFI for the current scene estimate and read out as photon counts {n1, . . . ,nM}. These counts drive a maximum-likelihood update of the source parameters (xn, yn, bn), from which the basis is reconstructed to maximize the quantum Fisher information, closing the measure–estimate–adaptive mode calculation loop. (b) Photon-level view of the detection problem as the host– companion contrast deepens from 1:102 to 1:106 (105 photons per panel; red and yellow points denote stellar and planetary photons, crosses mark true positions). The planetary cluster, recognizable at 1:102 , is progressively buried in the stellar halo and becomes unrecognizable, illustrating the failure of direct imaging in the ultra-high-contrast regime. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Exoplanet-Detection-Using.png?resize=1200%2C720&ssl=1)
[astro-ph.IM] Detecting terrestrial exoplanets in the habitable zones of nearby stars remains a critical challenge. Such planets can be 10^8 10^10 times fainter than their host stars and lie at […]