Relative Acceleration Noise Mitigation for Nanocrystal Matter-wave
Interferometry: Application to Entangling Masses via Quantum Gravity
- URL: http://arxiv.org/abs/2007.15029v2
- Date: Sun, 25 Apr 2021 13:22:38 GMT
- Title: Relative Acceleration Noise Mitigation for Nanocrystal Matter-wave
Interferometry: Application to Entangling Masses via Quantum Gravity
- Authors: Marko Toro\v{s}, Thomas W. van de Kamp, Ryan J. Marshman, M. S. Kim,
Anupam Mazumdar, Sougato Bose
- Abstract summary: Matter wave interferometers with large momentum transfers will face a universal dephasing due to relative accelerations between the interferometric mass and the apparatus.
Here we propose a solution that works even without actively tracking the relative accelerations: putting both the interfering mass and its associated apparatus in a freely falling capsule.
We show that the former can be reduced below desired values by appropriate pressures and temperatures, while the latter can be fully mitigated in a controlled environment.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Matter wave interferometers with large momentum transfers, irrespective of
specific implementations, will face a universal dephasing due to relative
accelerations between the interferometric mass and the associated apparatus.
Here we propose a solution that works even without actively tracking the
relative accelerations: putting both the interfering mass and its associated
apparatus in a freely falling capsule, so that the strongest inertial noise
components vanish due to the equivalence principle. In this setting, we
investigate two of the most important remaining noise sources: (a) the
non-inertial jitter of the experimental setup and (b) the gravity-gradient
noise. We show that the former can be reduced below desired values by
appropriate pressures and temperatures, while the latter can be fully mitigated
in a controlled environment. We finally apply the analysis to a recent proposal
for testing the quantum nature of gravity [S. Bose et. al. Phys. Rev. Lett 119,
240401 (2017)] through the entanglement of two masses undergoing
interferometry. We show that the relevant entanglement witnessing is feasible
with achievable levels of relative acceleration noise.
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