Abstract: Exoplanet detection is a key frontier in modern astronomy. The fundamental principles of optical stellar interferometry are systematically reviewed and its application in resolving exoplanetary systems with extremely small angular separations and ultra-high brightness contrasts is explored. Its potential for exoplanet detection and super-resolution imaging through the framework of quantum information theory is further assessd. Building on classical optical coherence theory, the core principles of stellar interferometry and its ability to resolve binary point sources and complex astrophysical structures are analyzed. By incorporating quantum information theory and parameter estimation techniques, the problem of exoplanetary system resolution is revisited and the advantages of quantum-inspired interferometric techniques are quantified in achieving super-resolution imaging. Optical stellar interferometry, leveraging multiple telescopes and synthetic apertures, surpasses the diffraction limit of single telescopes, enabling high-resolution, high-contrast astronomical imaging. Specialized configurations, such as nulling and phase-referenced interferometry, offer significant advantages for imaging exoplanetary systems with extreme brightness contrasts. Quantum-inspired interferometry, guided by quantum information theory and parameter estimation, has the potential to exceed classical resolution limits, reaching the quantum limit for resolving binary point sources and measuring angular distances. Optical stellar interferometry enables high-resolution imaging of exoplanetary systems with extreme brightness contrasts through long-baseline arrays and advanced configurations. The proposed approach achieves the quantum limit for resolving exoplanetary systems and measuring angular distances, surpassing the classical constraints of direct intensity measurements and demonstrating its potential for super-resolution imaging.

Key words: optical stellar interferometry, exoplanets, nulling interferometry, phasereferenced interferometry, quantum Fisher information