The Space Optical Clocks Project: Development of high-performance transportable and breadboard optical clocks and advanced subsystems

Schiller, S.; Görlitz, Axel; Nevsky, A.; Alighanbari, S.; Vasilyev, Sergey; Abou-Jaoudeh, C.; Mura, G.; Franzen, Tobias; Sterr, U.; Falke, Stephan; Lisdat, Ch.; Rasel, Ernst M.; Kulosa, A. P.; Bize, S.; Lodewyck, Jérôme; Tino, G. M.; Poli, N.; Schioppo, M.; Bongs, Kai; Singh, Yeshpal; Gill, P.; Barwood, G. P.; Ovchinnikov, Yuri B.; Stühler, J.; Kaenders, Wilhelm; Braxmaier, Claus; Holzwarth, Ronald; Donati, Alessandro; Lecomte, Steve; Calonico, Davide; Levi, Filippo

doi:10.48550/arxiv.1206.3765

Cited by 8 publications

(9 citation statements)

References 6 publications

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“…At room temperature the vapor pressure of alkaline earth metals (as strontium) is lower than that of alkali at the same temperature, for this reason relatively high temperature ovens are typically needed (T 450 • C for Sr). In particular the application of alkaline earth metals for optical clocks is today prompting significant scientific and technological efforts for the realization of compact, reliable and transportable apparatus, in the perspective of a their future use in space [1][2][3][4] . This background is at the basis of our study on an efficient strontium oven, which represents one of the critical parts in an optical clock in terms of power consumption, size and heat management.…”

Section: Introductionmentioning

confidence: 99%

A compact and efficient strontium oven for laser-cooling experiments

Schioppo

Poli

Prevedelli

et al. 2012

Review of Scientific Instruments

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Development of a compact cylindrical reaction cavity for a microwave dielectric heating system Rev. Sci. Instrum. 83, 034703 (2012) Development of roll-to-roll hot embossing system with induction heater for micro fabrication Rev. Sci. Instrum. 83, 015108 (2012) Efficient heating with a controlled microwave field Rev. Sci. Instrum. 82, 124703 (2011) An induction heater device for studies of magnetic hyperthermia and specific absorption ratio measurements Rev. Sci. Instrum. 82, 114904 (2011) A comparison of microwave irradiation, electric, and hybrid heating for medical plastic-waste treatment J. Renewable Sustainable Energy 3, 033106 (2011) Additional information on Rev. Sci. Instrum. Here we describe a compact and efficient strontium oven well suited for laser-cooling experiments. Novel design solutions allowed us to produce a collimated strontium atomic beam with a flux of 1.0 × 10 13 s −1 cm −2 at the oven temperature of 450 • C, reached with an electrical power consumption of 36 W. The oven is based on a stainless-steel reservoir, filled with 6 g of metallic strontium, electrically heated in a vacuum environment by a tantalum wire threaded through an alumina multi-bore tube. The oven can be hosted in a standard DN40CF cube and has an estimated continuous operation lifetime of 10 years. This oven can be used for other alkali and alkaline earth metals with essentially no modifications.

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Section: Introductionmentioning

confidence: 99%

A compact and efficient strontium oven for laser-cooling experiments

Schioppo

Poli

Prevedelli

et al. 2012

Review of Scientific Instruments

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“…Partly motivated by this success, major space agencies, e.g., in Europe and Canada, have invested resources for the implementation of space-based quantum technologies [2][3][4]. There are advanced plans to use satellites to distribute entanglement for quantum cryptography and teleportation (e.g., the Space-QUEST project [5]) and to install quantum clocks in space (e.g., the Space Optical Clock project [6]). However, at these scales relativistic effects become observable.…”

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confidence: 99%

Relativistic Quantum Metrology: Exploiting relativity to improve quantum measurement technologies

Ahmadi

Bruschi

Sabín

et al. 2014

Sci Rep

122

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We present a framework for relativistic quantum metrology that is useful for both Earth-based and space-based technologies. Quantum metrology has been so far successfully applied to design precision instruments such as clocks and sensors which outperform classical devices by exploiting quantum properties. There are advanced plans to implement these and other quantum technologies in space, for instance Space-QUEST and Space Optical Clock projects intend to implement quantum communications and quantum clocks at regimes where relativity starts to kick in. However, typical setups do not take into account the effects of relativity on quantum properties. To include and exploit these effects, we introduce techniques for the application of metrology to quantum field theory. Quantum field theory properly incorporates quantum theory and relativity, in particular, at regimes where space-based experiments take place. This framework allows for high precision estimation of parameters that appear in quantum field theory including proper times and accelerations. Indeed, the techniques can be applied to develop a novel generation of relativistic quantum technologies for gravimeters, clocks and sensors. As an example, we present a high precision device which in principle improves the state-of-the-art in quantum accelerometers by exploiting relativistic effects.

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“…There have been tremendous advances in the performance of atomic frequency standards (clocks) over the past 40 years, and, for compelling reasons, there are growing efforts to put more advanced atomic clocks into space. Prominent examples are the PHARAO cold-cesium atomic clock that is part of the European ACES mission 1 scheduled to fly on the International Space Station about 2016, the compact Hg + ion standard of JPL designed for space applications, and other promising systems under development for the future (the ESA Space Optical Clock, 2 the DARPA Slow Beam Optical Clock 3 ). Advanced laser systems have already vastly improved the performance of atomic clocks and optical frequency synthesis and division.…”

Section: Motivationmentioning

confidence: 99%

Laser Time-Transfer and Space-Time Reference in Orbit

Berceau¹,

Hollberg²

2014

CPT and Lorentz Symmetry

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A high performance Space-Time Reference in orbit could be realized using a stable atomic clock in a precisely defined orbit and linking that to high accuracy atomic clocks on the ground using a laser based time-transfer link. This would enhance performance of existing systems and provide unique capabilities in navigation, precise timing, earth sciences, geodesy and the same approach could provide a platform for testing fundamental physics in space. Precise laser timeand frequency-transfer from the ground to an orbiting satellite would make it possible to improve upon the current state of the art in timing (about 1 to 30 ns achieved with GPS) by roughly a factor of 1000 to the 1 ps level. MotivationThere have been tremendous advances in the performance of atomic frequency standards (clocks) over the past 40 years, and, for compelling reasons, there are growing efforts to put more advanced atomic clocks into space. Prominent examples are the PHARAO cold-cesium atomic clock that is part of the European ACES mission 1 scheduled to fly on the International Space Station about 2016, the compact Hg + ion standard of JPL designed for space applications, and other promising systems under development for the future (the ESA Space Optical Clock, 2 the DARPA Slow Beam Optical Clock 3 ). Advanced laser systems have already vastly improved the performance of atomic clocks and optical frequency synthesis and division. Lasers can do the same for time transfer to space. System conceptThe basic system concept is to take advantage of the very high stability and high accuracy available from cold-atom atomic clocks, as well as the precise timing and optical frequency division provided by femotosecond lasers, and

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The Space Optical Clocks Project: Development of high-performance transportable and breadboard optical clocks and advanced subsystems

Cited by 8 publications

References 6 publications

A compact and efficient strontium oven for laser-cooling experiments

A compact and efficient strontium oven for laser-cooling experiments

Relativistic Quantum Metrology: Exploiting relativity to improve quantum measurement technologies

Laser Time-Transfer and Space-Time Reference in Orbit

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