Generation of squeezed vacuum state in the millihertz frequency band

• URL: http://arxiv.org/abs/2408.10607v1
• Date: Tue, 20 Aug 2024 07:39:21 GMT
• Title: Generation of squeezed vacuum state in the millihertz frequency band
• Authors: Li Gao, Li-ang Zheng, Bo Lu, Shaoping Shi, Long Tian, Yaohui Zheng,
• Abstract summary: We report on the first direct observation of a squeezed vacuum field until Fourier frequency of 4 millihertz with the quantum noise reduction of up to 8 dB. Our work provides quantum resources for future gravitational wave observatories, facilitating the development of quantum precision measurement.
• Score: 22.113661605360104
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The detection of gravitational waves has ushered in a new era of observing the universe. Quantum resource advantages offer significant enhancements to the sensitivity of gravitational wave observatories. While squeezed states for ground-based gravitational wave detection have received marked attention, the generation of squeezed states suitable for mid-to-low-frequency detection has remained unexplored. To address the gap in squeezed state optical fields at ultra-low frequencies, we report on the first direct observation of a squeezed vacuum field until Fourier frequency of 4 millihertz with the quantum noise reduction of up to 8 dB, by the employment of a multiple noise suppression scheme. Our work provides quantum resources for future gravitational wave observatories, facilitating the development of quantum precision measurement.

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