Quantum technologies are gaining importance every day. Space exploration has been on the forefront of development of quantum technologies and investigation of quantum mechanical phenomena. It is thus evident, that space, with its demands on size, mass, and power, can be a major technology driver and accelerator for innovations in quantum technology.
In this topical Collection, we want to summarize the uses of and advancement in quantum technologies:
In Space - Quantum technologies in space can be deployed to investigate a number of fundamental questions not possible in terrestrial environments, especially:
• Quantum Mechanical Phenomena:
• Decoherence Experiments
• Surface Interactions
• 3D atomic systems
• Et cetera
• Fundamental Physics:
• Weak Equivalence Principle Tests
• Local Lorentz Invariance Tests
• Local Position Invariance Tests
• Search for new physics
For Space - The exploration of space can benefit from the possibilities in quantum technologies. Quantum technologies can be deployed for space, especially in:
• Navigation without GNSS
• Deep Space Timing, Position and Navigation (PNT)
• Inertial Sensing
• Navigation along and Generation of Planetary Maps
• Planetary and Lunar Research
• Space Weather Monitoring
• Gravitational Redshift
• Gravitational Wave Detection
From Space - Our civilization has come to rely on global services that can be improved by or include already quantum technologies, such as:
• Global Navigation Satellite System (GNSS)
• Earth Observation
• Gravimetry / Gravity Gradiometry
• Quantum RADAR
• Quantum LIDAR
• Altimetry
• Quantum Communication Networks
This topical issue welcomes publications in all these areas with a specific focus given to the current strategic considerations at NASA, through the National Academies' Biological and Physics Sciences Decadal Survey report, and at ESA.