Proposal for an optical interferometric measurement of the gravitational red-shift with satellite systems
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2018
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| author | Terno, Daniel R. Vedovato, Francesco Schiavon, Matteo Smith, Alexander R. H. Magnani, Piergiovanni Vallone, Giuseppe Villoresi, Paolo |
| author_facet | Terno, Daniel R. Vedovato, Francesco Schiavon, Matteo Smith, Alexander R. H. Magnani, Piergiovanni Vallone, Giuseppe Villoresi, Paolo |
| contents | The Einstein Equivalence Principle (EEP) underpins all metric theories of gravity. One of its key aspects is the local position invariance (LPI) of non-gravitational experiments, which is captured by the gravitational red-shift. The iconic gravitational red-shift experiment places two fermionic systems, used as clocks, in different gravitational potentials and compares them using the electromagnetic field. However, the electromagnetic field itself can be used as a clock, by comparing the phases acquired by two optical pulses propagating through different gravitational potentials. A fundamental point in the implementation of a satellite large-distance optical interferometric experiment is the suppression of the first-order Doppler effect, which dominates the weak gravitational signal necessary to test the EEP. Here, we propose a novel scheme to suppress it, by subtracting the phase-shifts measured in the one-way and in the two-way configuration between a ground station and a satellite. We present a detailed analysis of this technique within the post-Newtonian framework and perform some simulations of its performance using realistic satellite orbits and the state-of-the-art fiber technology at the telecom wavelength of 1550 nm. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_1811_04835 |
| institution | arXiv |
| publishDate | 2018 |
| record_format | arxiv |
| spellingShingle | Proposal for an optical interferometric measurement of the gravitational red-shift with satellite systems Terno, Daniel R. Vedovato, Francesco Schiavon, Matteo Smith, Alexander R. H. Magnani, Piergiovanni Vallone, Giuseppe Villoresi, Paolo General Relativity and Quantum Cosmology Quantum Physics The Einstein Equivalence Principle (EEP) underpins all metric theories of gravity. One of its key aspects is the local position invariance (LPI) of non-gravitational experiments, which is captured by the gravitational red-shift. The iconic gravitational red-shift experiment places two fermionic systems, used as clocks, in different gravitational potentials and compares them using the electromagnetic field. However, the electromagnetic field itself can be used as a clock, by comparing the phases acquired by two optical pulses propagating through different gravitational potentials. A fundamental point in the implementation of a satellite large-distance optical interferometric experiment is the suppression of the first-order Doppler effect, which dominates the weak gravitational signal necessary to test the EEP. Here, we propose a novel scheme to suppress it, by subtracting the phase-shifts measured in the one-way and in the two-way configuration between a ground station and a satellite. We present a detailed analysis of this technique within the post-Newtonian framework and perform some simulations of its performance using realistic satellite orbits and the state-of-the-art fiber technology at the telecom wavelength of 1550 nm. |
| title | Proposal for an optical interferometric measurement of the gravitational red-shift with satellite systems |
| topic | General Relativity and Quantum Cosmology Quantum Physics |
| url | https://arxiv.org/abs/1811.04835 |