Towards gravimetry enhancement with squeezed states

• URL: http://arxiv.org/abs/2510.13973v1
• Date: Wed, 15 Oct 2025 18:02:08 GMT
• Title: Towards gravimetry enhancement with squeezed states
• Authors: Oziel R. de Araujo, Lucas S. Marinho, Jonas F. G. Santos, Carlos H. S. Vieira,
• Abstract summary: We analyze how the squeezing phase, beyond its amplitudes, of the probes affects the attainable precision.<n>Our results are important to highlight the fundamental role of phase-engineered squeezing in experimental gravimetry protocols.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate the estimation sensitivity of gravitational acceleration using squeezed probe states within a quantum metrology framework. In particular, we analyze how the squeezing phase, beyond its amplitudes, of the probes affects the attainable precision. We find that probes squeezed along the canonical phase-space quadrature can fail to achieve a quantum Fisher information (QFI) surpassing the shot-noise limit, regardless of the interaction time with the gravitational field. In contrast, position-momentum correlated input states with the squeezing amplitude can overcome this limit. Furthermore, we show that optimal sensitivity is attained through projective momentum measurements combined with a time-dependent adjustment of the squeezing phase. Our results are important to highlight the fundamental role of phase-engineered squeezing in experimental gravimetry protocols.

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