全新量子干涉仪灵敏度破纪录

Core Viewpoint - The research team from Shanghai Jiao Tong University has made significant advancements in quantum interference technology and quantum precision measurement by proposing and implementing a new interference architecture called the "quantum twin interferometer," which has improved the signal-to-noise ratio of quantum correlated interferometer phase measurement by three orders of magnitude [1][2]. Group 1: Breakthroughs in Quantum Measurement - The team has successfully surpassed the standard quantum limit in sensitivity for measuring weak signals, which has been a long-standing challenge in the field [1]. - The newly developed quantum correlated interferometer and quantum-enhanced gradient meter have maintained the best international records in this area [1]. Group 2: New Measurement Paradigm - The quantum twin interferometer replaces the existing balanced homodyne detection method, utilizing entangled twin beams in a parallel configuration to establish a new paradigm for phase measurement that combines quantum correlation interference and entanglement detection [2]. - This achievement represents a significant milestone in the advancement of quantum metrology [2].