(Anamika was an intern in our group in summer 2016)
The scientific objective is to investigate Gravitational Waves and other fundamental aspects of gravity as well as the connection between gravitational physics and quantum physics using new quantum sensors, namely, optical atomic clocks and atom interferometers based on ultracold Strontium atoms.
Combining quantum sensing and quantum communication, SAGE is based on recent im- pressive achievements in quantum technologies for optical clocks, atom interferometers, microwave and optical links. This call provides a unique opportunity to investigate in detail the fascinating idea of this ultimate multi-purpose gravity explorer based on all the most advanced achievements in the field.
We consider a multi-satellite configuration with payload/instruments including Strontium optical atomic clocks, Strontium atom interferometers and satellite-to-satellite/satellite- to-Earth laser links.
SAGE main scientific goals are: PRIMARY GOAL:
• Observe Gravitational Waves in new frequency ranges with atomic sensors.
• Search for Dark-Matter
• Measure the Gravitational Red Shift
• Test the Equivalence Principle of General Relativity and search for spin-gravity coupling
• Define an ultraprecise frame of reference for Earth and Space and compare terrestrial clocks
• Investigate quantum correlations and test Bell inequalities for different gravitational potentials and relative velocities
• Use clocks and links between satellites for optical VLBI in Space
Although the technology for such a mission is not mature yet, it takes advantage of devel- opments for the ACES (Atomic Clock Ensemble in Space) mission and the results of ESA studies for SOC (Space Optical Clock), SAI (Space Atom Interferometer), STE-QUEST, GOAT and ongoing national projects in this frame.
Supporting scientists and institutes from ESA member states as well as from USA, China, Japan, Singapore are listed in the final section of the proposal.
G. M. Tino (Lead Proposer) – Universita di Firenze, LENS, INFN, Firenze, Italy
K. Bongs – School of Physics and Astronomy, University of Birmingham, UK
P. Bouyer – Laboratoire Photonique, Numerique et Nanosciences, Bordeaux, France
W. Ertmer – Institute for Quantum Optics, Leibniz Universität Hannover, Germany
L. Iess – Dipartimento di Ingegneria Meccanica e Aerospaziale, Universit`a di Roma, Italy
A. Peters – Humboldt Universität zu Berlin, Germany
E. Rasel – Institute for Quantum Optics, Leibniz Universität Hannover, Germany
A. Roura – Institut für Quantenphysik, Universität Ulm, Germany
C. Salomon – Laboratoire Kastler Brossel, Ecole Normale Superieure, Paris, France
S. Schiller – Institut für Experimentalphysik, Universität Dusseldorf, Germany
W. Schleich – Institut für Quantenphysik, Universität Ulm, Germany
F. Sorrentino – Istituto Nazionale di Fisica Nucleare, Sezione di Genova, Italy
U. Sterr – Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
F. Vetrano – University of Urbino, Italy
P. Villoresi – Department of Information Engineering, University of Padova, Italy
W. von Klitzing – IESL–FORTH, Crete, Greece
P. Wolf – LNE-SYRTE, CNRS, Observatoire de Paris, France
Our ESA Space-Optics project has reached a major milestone: We have finished the development of a novel beam collimation technique, which works allows us to adjust the waist of the laser beam emitted from a fibre coupler to an arbitrary position simply by maximising the peak intensity of the laser beam at some other position.
In order to make the coupler space-compatible it is manufactured from ultra-low-expansion ceramics (ZERODUR) and has no moving parts.
Just for fun… BECs can also smile: This is a BEC loaded from a dipole trap into a TAAP trap and then propagated for some time. The picture is an absorption image with darker standing for a higher number of atoms.
We are also learning to write 😉 … for example the letter H
And our latest addition … the number 9
And of course our smiling BEC
We have been appointed the Greek representatives of “Quantum Technologies in Space (QTSpace)”.
The scientific and technological legacy of the 20th century includes milestones such as quantum mechanics and pioneering space missions. Both endeavours have opened new avenues for the furthering of our understanding of Nature, and are true landmarks of modern science. Quantum theory and space science form building blocks of a powerful research framework for exploring the boundaries of modern physicsthrough the unique working conditions offered by experimental tests performed in space.
Long free-fall times enable high-precision tests of general relativity and tests of the equivalence principle for quantum systems.
Harnessing microgravity, high vacuum and low temperature of deep space promises allowing the study of deviations from standard quantum theoryfor high-mass test particles. Space-based experiments of metrology and sensing will push the precision of clocks, mass detectors and transducers towards the engineering of novel quantum technologies.
Igor Lesanovsky, a former postdoc of CMW (2006) now full Professor at University of Nottingham, has won the 2014 Maxwell medal and prize for his outstanding contributions to the theory of control and manipulation of quantum systems, particularly his pioneering studies of highly excited ‘Rydberg’ states in cold atomic gases