Search for dark photons with synchronized quantum sensor network

• URL: http://arxiv.org/abs/2305.00890v1
• Date: Mon, 1 May 2023 15:51:34 GMT
• Title: Search for dark photons with synchronized quantum sensor network
• Authors: Min Jiang, Taizhou Hong, Dongdong Hu, Yifan Chen, Fengwei Yang, Tao Hu, Xiaodong Yang, Jing Shu, Yue Zhao, Xinhua Peng
• Abstract summary: Current constraints on the existence of dark photons with masses below MHz are predominantly set by cosmological or astrophysical limits. Here, we demonstrate a network of 15 atomic magnetometers, which are synchronized with the Global Positioning System (GPS) and are situated on the edges of two meter-scale shielded rooms. Using this network, we constrain the kinetic mixing coefficient of dark photon dark matter over the mass range 1-500 Hz, which gives the strongest constraint of a terrestrial experiment within this mass window.
• Score: 18.00599935008738
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Ultralight dark photons constitute a well-motivated candidate for dark matter. Nevertheless, current constraints on the existence of dark photons with masses below MHz are predominantly set by cosmological or astrophysical limits. They behave as effective currents when coupled with standard model photons through kinetic mixing. When situated in electromagnetic shielded rooms, oscillating magnetic fields are generated with the maximum field strength proportional to the shield size. Here, we demonstrate a network of 15 atomic magnetometers, which are synchronized with the Global Positioning System (GPS) and are situated on the edges of two meter-scale shielded rooms, serving as a powerful tool to search for dark photons. Both the network multiple quantum sensors and the shield large size significantly enhance the expected dark-photon signals. Using this network, we constrain the kinetic mixing coefficient of dark photon dark matter over the mass range 1-500 Hz, which gives the strongest constraint of a terrestrial experiment within this mass window. Our prospect indicates that future data releases may go beyond the constraints from the Cosmic Microwave Background and the gas cloud cooling.

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