Inertial torsion noise in matter-wave interferometers for gravity experiments

Wu, Meng-Zhi (avtor), Toroš, Marko (avtor), Bose, Sougato (avtor), Mazumdar, Anupam (avtor)

Matter-wave interferometry is susceptible to noninertial noise sources, which can induce dephasing and a resulting loss of interferometric visibility. Here, we focus on inertial torsion noise (ITN), which arises from the rotational motion of the experimental apparatus suspended by a thin wire and subject to random external torques. We provide analytical expressions for the ITN noise starting from generalized Langevin equations describing the experimental box, which can then be used together with the transfer function to obtain the dephasing factor. We verify the theoretical modeling and the validity of the approximations using Monte Carlo simulations, obtaining good agreement between theory and numerics. As an application, we estimate the size of the effects for the next generation of interferometry experiments with femtogram particles, which could be used as the building block for entanglement-based tests of the quantum nature of gravity. We find that the ambient gas is a weak source of ITN, posing mild restrictions on the ambient pressure and temperature. We discuss the general ITN constraints by assuming a Langevin equation parametrized by three phenomenological parameters.

• Jezik: Angleški jezik
• Ključne besede: relativity, quantum physics, interferometry
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Leto izida: 2025
• Št. strani: Str. 064004-1-064004-14
• Številčenje: Vol. 111, iss. 6
• PID: 20.500.12556/RUL-167622
• UDK: 53
• ISSN pri članku: 2470-0010
• DOI: 10.1103/PhysRevD.111.064004
• COBISS.SI-ID: 227905283
• Datum objave v RUL: 04.03.2025

Gradivo je del revije

• Naslov: Physical review
• Skrajšan naslov: Phys. rev., D
• Založnik: American Physical Society
• ISSN: 2470-0010
• COBISS.SI-ID: 29757223

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: relativnost, kvantna fizika, interferometrija