Preprint · October 2026
White paper: 1-10 Hz matter-wave interferometer to test the spin entanglement witness for quantum gravity
Preprint, arXiv:2610.07422 (2026)
Abstract
In this white paper, we highlight the importance of the 1–10 mHz frequency range for laboratory tests of the quantum nature of gravity using the quantum gravity-induced entanglement of masses (QGEM) protocol. QGEM requires matter-wave interferometers with masses m ∼ 10⁻¹⁵–10⁻¹⁴ kg, brought within separations d ∼ 30–50 μm, while maintaining spatial superpositions of 1–20 μm and coherence for τ ∼ 0.1–1 s. These requirements make low-frequency environmental noise a central experimental challenge and place QGEM in a regime closely related to the low-frequency goals of the Einstein Telescope (ET) and the Cosmic Explorer (CE). In particular, QGEM is sensitive to relative acceleration noise (RAN) and to gravity-gradient noise (GGN) generated by seismic and other environmental mass-density fluctuations. For representative parameters m = 10⁻¹⁴ kg, Δx = 10 μm, and τ = 1 s, the differential acceleration-noise amplitude spectral density must be suppressed well below the 10⁻¹⁵ m s⁻²/√Hz level to keep acceleration-induced dephasing below the relevant experimental scale. Achieving this level of low-frequency noise suppression is therefore a key requirement for QGEM and closely parallels the seismic and gravity-gradient noise challenges that ET and CE address.
Cite
@misc{bose2026whitepaper110hz,
archiveprefix = {arXiv},
author = {Sougato Bose and Anupam Mazumdar and Marko Toroš and Tian Zhou and Tadeusz Adach and Niayesh Afshordi and Agya Sewara Alam and Alexandre Arbey and Navdeep Arya and Simon Baier and Peter F. Barker and Angelo Bassi and Ettore Bernardi and Lorenzo Braccini and Robert Brandenberger and Daniel Braun and Guri K. Buza and Luigi Cacciapuoti and Carlo Cepollaro and Lin-Qing Chen and Yanbei Chen and Ralph Jason Costales and Marion Cromb and Álvaro de la Cruz-Dombriz and Catalina Curceanu and Shubhang Dadhich and Debarshi Das and Saurya Das and Pratika Dayal and Subhadeep De and Ema Dimastrogiovanni and Lajos Diósi and Or Dobkowski and Kemal Döner and Brian D'Urso and Gurudev Dutt and Shafaq Gulzar Elahi and Samira Elghaayda and Matteo Fadel and Samuel Fedida and Omer Feldman and Fabiano Feleppa and Ron Folman and Joshua Foo and Paolo Fragolino and Laurent Freidel and Giulio Gasbarri and Marco Genovese and Andrew Geraci and Menachem Givon and Cisco Gooding and Jonathan M. H. Gosling and Piotr T. Grochowski and David Groswasser and Mustafa Gündoğan and Ekim Taylan Hanımeli and Bas Hensen and Dipankar Home and Richard Howl and Yonathan Japha and Maciej T. Jarema and Rainer Kaltenbaek and Adrian Kent and Eva Kilian-Rademacher and M. S. Kim and Jarosław K. Korbicz and Timothy Kovachy and Samuel Kováčik and Ohkyung Kwon and Gaetano Lambiase and Naor Levi and Iarley P. Lobo and Leon Loveridge and Adrian Lupascu and Paolo Luppi and Marta Maria Marchese and Antonino Marcianò and Aaron G. Markowitz and Chiara Marletto and Ryan J Marshman and J. D. D. Martin and Florian Millo and Gavin W. Morley and Maria Muretova and Sebastian Murk and Robin Oberfrank and Daniel K. L. Oi and Jerzy Paczos and Papadopoulos Stylianos and Matteo G. A. Paris and Mauro Paternostro and Alessandro Pesci and Luciano Petruzziello and Fabrizio Piacentini and Tanmay Kumar Poddar and Sofia Qvarfort and Markus Rademacher and Dennis Rätzel and Anna Chiara Rescigno and Ryan Rizaldy and Albert Roura and Carlos Sabín and Barry C. Sanders and Martine Schut and Helen M Sheehy and Suprit Singh and Aninda Sinha and Urbasi Sinha and Peter Skakunenko and Michael E Tobar and Géza Tóth and Hendrik Ulbricht and Gislaine Varão and Vlatko Vedral and Vincent Vennin and Francesca Vidotto and Giuseppe Filiberto Vitale and Marko Vojinović and Chenan Wei and Qian Xiang and Magdalena Zych},
eprint = {2610.07422},
month = {Oct},
primaryclass = {quant-ph},
title = {White paper: 1-10 Hz matter-wave interferometer to test the spin entanglement witness for quantum gravity},
url = {https://arxiv.org/abs/2610.07422},
year = {2026}
}