https://doi.org/10.1140/epjqt/s40507-025-00370-1
Research
Towards satellite tests combining general relativity and quantum mechanics through quantum optical interferometry: progress on the deep space quantum link
1 Boeing, 2060 E Imperial Hwy, 90245, El Segundo, CA, USA
2 University of Patras, Patras, Greece
3 Harvey Mudd College, Claremont, CA, USA
4 University of Maryland, College Park, MD, USA
5 Simon Fraser University, Burnaby, BC, Canada
6 University of Waterloo, Waterloo, ON, Canada
7 Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA, USA
8 National Changhua University of Education, Changhua City, Taiwan
9 National University of Singapore, Singapore, SG, Singapore
10 Max Planck Institute for the Science of Light, Erlangen, Germany
11 Netherlands Organization for Applied Scientific Research (TNO), The Hague, The Netherlands
12 German Aerospace Center (DLR), Ulm, Germany
13 Los Alamos National Laboratory, Los Alamos, NM, USA
14 Padua Quantum technologies Research Center and Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Padova, Padua, Italy
15 University of Illinois Urbana-Champaign, Urbana, IL, USA
a
Makan.Mohageg@boeing.com
b
Kwiat@illinois.edu
Received:
26
February
2025
Accepted:
21
May
2025
Published online: 20 June 2025
The Deep Space Quantum Link (DSQL) is a space-mission concept that aims to explore the interplay between general relativity and quantum mechanics using quantum optical interferometry. This mission concept was formally presented to the United States National Academy of Science Decadal Survey as a research campaign for Fundamental Physics in 2022. Since then, advances have been made in the space-based quantum optical technologies required to conduct a DSQL-type mission. In addition, other research efforts have defined alternative measurement concepts to explore the same scientific questions motivating the DSQL mission. This paper serves as an update to the community on the status of the DSQL mission concept and related research and technology development efforts.
Key words: Quantum Optics / Quantum Networking / Fundamental Physics / Quantum Interferometry
Charis Anastopoulos, Olivia Brasher, Jason Gallicchio, Bei Lok Hu, Thomas Jennewein, Spencer Johnson, Shih-Yuin Lin, Alexander Ling, Alexander Lohrmann, Christoph Marquardt, Luca Mazzarella, Matthias Meister, Raymond Newell, Albert Roura, Giuseppe Vallone, Paolo Villoresi and Lisa Wörner contributed equally to this work.
© The Author(s) 2025
Open Access
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