2023/12/06 by Sang-Bae Kim, Kim, Sangbae, Byoung S. Ham +1
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser-Matter Interactions and Applications #Photonic and Optical Devices #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2312.03343
openalex publication_date 2023/12/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Super-resolution overcoming the standard quantum limit has been intensively studied for quantum sensing applications of precision target detection over the last decades. Not only higher-order entangled photons but also phase-controlled coherent photons have been used to demonstrate the super-resolution. Due to the extreme inefficiency of higher-order entangled photon-pair generation and ultralow signal-to-noise ratio, however, quantum sensing has been severely limited. Here, we report observations of coherently excited super-resolution using phase-controlled coherent photons in a delayed-choice quantum eraser scheme. Using phase manipulations of the quantum erasers, super-resolution has been observed for higher-order intensity correlations between them, satisfying the Heisenberg limit in phase resolution. This new type of precision phase-detection technique opens the door to practical applications of quantum sensing compatible with current technologies based on coherence optics.