MAQRO -- BPS 2023 research campaign whitepaper

Kaltenbaek, Rainer and Arndt, Markus and Aspelmeyer, Markus and Barker, Peter F. and Bassi, Angelo and Bateman, James and Belenchia, Alessio and Bergé, Joel and Bose, Sougato and Braxmaier, Claus and Christophe, Bruno and Cole, Garrett D. and Curceanu, Catalina and Datta, Animesh and Debiossac, Maxime and Delić, Uroš and Diósi, Lajos and Geraci, Andrew A. and Gerlich, Stefan and Guerlin, Christine and Hechenblaikner, Gerald and Heidmann, Antoine and Herrmann, Sven and Hornberger, Klaus and Johann, Ulrich and Kiesel, Nikolai and LeBrun, Thomas W. and Milburn, Gerard J. and Millen, James and Mohageg, Makan and Moore, David C. and Morley, Gavin W. and Nimmrichter, Stefan and Novotny, Lukas and Oi, Daniel K. L. and Paternostro, Mauro and Riedel, C. Jess and Rodrigues, Manuel and Rondin, Loïc and Roura, Albert and Schleich, Wolfgang P. and Schuldt, Thilo and Stickler, Benjamin A. and Ulbricht, Hendrik and Vogt, Christian and Wörner, Lisa (2022) MAQRO -- BPS 2023 research campaign whitepaper. Other. arXiv.org, Ithaca, NY. (https://doi.org/10.48550/arXiv.2202.01535)

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Abstract

The objective of the proposed MAQRO mission is to harness space for achieving long free-fall times, extreme vacuum, nano-gravity, and cryogenic temperatures to test the foundations of physics in macroscopic quantum experiments. This will result in the development of novel quantum sensors and a means to probe the foundations of quantum physics at the interface with gravity. Earlier studies showed that the proposal is feasible but that several critical challenges remain, and key technologies need to be developed. These new technologies will open up the potential for achieving additional science objectives. The proposed research campaign aims to advance the state of the art and to perform the first macroscopic quantum experiments in space. Experiments on the ground, in micro-gravity, and in space will drive the proposed research campaign during the current decade to enable the implementation of MAQRO within the subsequent decade.

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