Observations of super-resolution using phase-controlled coherent photons in a delayed-choice quantum eraser scheme

• URL: http://arxiv.org/abs/2312.03343v1
• Date: Wed, 6 Dec 2023 08:35:49 GMT
• Title: Observations of super-resolution using phase-controlled coherent photons in a delayed-choice quantum eraser scheme
• Authors: Sangbae Kim and Byoung S. Ham
• Abstract summary: Super-resolution overcoming the standard quantum limit has been intensively studied for quantum sensing applications. Here, we report observations of coherently excited super-resolution using phase-controlled coherent photons.
• Score: 15.768497217367257
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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