Actualités du réseau FIRST-TF

26 juillet 2018

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Assemblée Générale 2018

9 octobre 2018 à la pépinière d'entreprises "Le Village" (Toulouse, France).
L’assemblée générale de tous les membres de FIRST-TF se réunit annuellement. C’est un moment d’échange important entre les laboratoires, les industriels, les centres techniques et agences, les établissements qui contribuent à la vie du réseau FIRST-TF. Cette assemblée générale permet aussi de présenter les résultats des projets soutenus et de débattre sur des sujets spécifiques.
Les inscriptions sont ouvertes.
=> Programme et inscriptions.





Optical Clock School 2018

10-14 September 2018 at Gressoney la Trinité (Aosta Valley, Italy).
The school will be aimed at PhD students, post-docs, young scientists and engineers of the field with a strong focus on training and education.
Research on optical frequency standards based on cold atoms or ions has shown a great advance in the last few years with optical clocks demonstrating unprecedented stability and accuracy and achieving 10^-18 uncertainties in just hundreds of seconds. Optical clocks are the best candidates for a redefinition of the SI second in the near future, surpassing the performance of caesium primary standards.
The School on Optical Clocks will offer insight on the state of the art in this field and will present the very latest results from the international community. The School will explain the efforts to achieve 1x10^-18 uncertainties, to develop novel techniques for frequency stabilization and to ensure the reproducibility of optical clocks through direct frequency comparisons.

=> More information.

École Technologique des électroniciens et instrumentalistes du CNRS : « L'électronique analogique : retour aux sources »

8-12 octobre 2018 à Besançon (France).
La seconde édition de l'École Technologique du Réseau National des Électroniciens (RdE) du CNRS s'inscrit dans le cadre des Actions Nationales de Formation (ANF) soutenues par le Service Formation et Itinéraires Professionnels (SFIP) au CNRS. Elle constitue l'ANF 2018 pour le RdE et fait partie des 6 écoles technologiques organisées au CNRS en 2018.
Organisée tous les 2 ans depuis 2016, elle est la digne héritière des rencontres annuelles du RdE dont elle constitue la 18ème édition depuis 1999 et perpétue l'esprit, l'essence même du réseau, à savoir le partage de connaissances et de savoir-faire des domaines de l'électronique et de l'instrumentation.
=> Programme et informations.



ESA Open Invitation to tender "Advanced glass cell technology for extended GNSS atomic clocks lifetime"

Glass cells are typically used in Frequency Standard, both as reference cell, in the lamps for atomic pumping and as dissociator bulbs.When used in a lamp (RAFS or Mercury ion trap), the cell must be sufficiently resilient for avoiding limitations in the lifetime due to diffusion of material (i.e. Rubidium or Mercury) inside the bulb walls, given the combination of dissociation mechanisms and high temperatures. In the case of dissociators (like in the PHM) the sputtering effect due to ion bombardment of the inner bulb surface is one of the detrimental effects limiting the instrument lifetime.Cell coating or appropriate bulb material selection are the only solution for limiting such phenomena. The existing techniques adopted in the industrial processes (especially for light bulbs) or in literature shall be analysed and solution shall be proposed for both lamps and dissociators. The identified solutions shall be implemented and at least 5 cells shall be manufactured for each solution proposed. Those cells will be integrated on a representative test vehicle. Aging or comparative tests shall be then identified and performed with the aim of assessing the identified solutions effectiveness. Geometry of the cells/bulbs will be provided as an input to the activity. Clock manufacturers shall be involved in the study for bulb geometry and test vehicle definition. Procurement Policy: C(1) = Activity restricted to non-prime contractors (incl. SMEs). For additional information please go to EMITS news "Industrial Policy measures for non-primes, SMEs and RD entities in ESA programmes".
Submission deadline: 10/09/2018
=> More details on EMITS of ESA website.

ESA Open Invitation to tender "Navigation and GNSS in smart cities: testbed concept definition"

GNSS and other positioning systems are expected to have a very important role in Smart Cities. In this context, the design of the high-level architecture of a testbed to support future applications of GNSS and other positioning systems in Smart Cities is of high interest. The design of this testbed shall consider as baseline the availability of a network of distributed smart sensors, which are remotely accessible and configurable from the cloud, and existing network infrastructures shall be considered. The capabilities provided by the smart sensors shall be identified in order to coverdifferent target applications. Any sector that could be benefit from the usage of navigation information shall beconsidered. In terms of technology, the exploitation of both GNSS and terrestrial positioning systems shall be taken into account. Furthermore, the mechanisms to manage and efficiently exploit the data from the sensors in the cloud shall be defined and preliminary assessed. Based on the previous analysis, a preliminary definition of Smart City navigation based applications and the corresponding feasibility analysis shall be provided. In parallel to the definition of the testbed,the following two use cases envisaged shall be implemented in a software simulation platform in order to show the potential of GNSS in Smart Cities:i- Cloud-based localisation of GNSS jammers: analysis, design and concept demonstration : the detection, monitoring and localization of GNSS jammers might be a need due to the increasing services and applications relying on the GNSS signals forits operation (e.g. mobile communication base stations). In this context, the current evolution of cloud computing and the Internetof Things (IoT) with future devices connected to the Internet and applications running in the cloud makes feasible to thing about acloud-based localization of GNSS jammers. A series of GNSS sensor devices are connected to the internet and are able to send to the cloud snapshots of the GNSS signal received which eventuallymight contain as well interference signals.
Submission deadline: 28/09/2018
=> More details on EMITS of ESA website.

ESA Open Invitation to tender "Frequency stabilisation of a quantum cascade laser for supra-THz applications"

The supra-THz (>3 THz) bands have been recently proposed for low Earth orbit THz remote sounding missions such as LOCUS (Low-Cost Upper-atmosphere Sounder). In order to achieve coherent detection, heterodyne receivers at supra-THz frequencies are under development by integrating in a single waveguide cavity a Schottky based mixers fed by a Quantum Cascade Laser (QCL) as Local Oscillator (LO).Thanks to the QCL, enough LO power is available to drive the mixer.Currently, a simple combination of passive thermal and electrical bias control is proposed for the frequency stabilization of the QCL. In order to achieve the frequency stability that would allowmeeting the scientific requirements, phased lock loop systems such as the beating tone of two lasers injected into the QCL shall beinvestigated.The activity aims at proposing, manufacturing and testing a frequency stabilization loop for QCLs used as LO of supra-THz Schottky mixers.The activity consists in: - establishing the state of the art survey for the Schottky based supra-THz heterodyne receivers and QCL LO,- issuing the main mission, receiver and LO performance requirements including frequency stability.- performing trade off analysis and selecting one baseline frequency stabilization loop solution including its integration with the QCL andSchottky mixer.- designing and analysing the selected configuration.- manufacturing and testing the critical breadboard elements- proposing a roadmap and a development plan for the critical elementsProcurement Policy: C(3) = Activity restricted to SMEs RD Entities. For additional information please go to EMITS news "Industrial Policy measures for non-primes, SMEs and RD entities in ESA programmes".
Submission deadline: 02/10/2018
=> More details on EMITS of ESA website.


Experimental physicist (with a doctorate) in the field of optical clocks

Physikalisch-Technische Bundesanstalt PTB (Braunschweig, Germany).
For the development of transportable optical clocks and their field use for the determination of geodetic height differences. The position is available on the basis of an initially 3-year fixed-term contract. Contributions to the following research topics:
  • Use of our transportable lattice clock for applications in geodesy and international clock comparisons in different locations
  • Realization of an optimized setup with an uncertainty of few 10^-18
  • Development of a transportable clock laser with sub-Hertz linewidth
=> More information.

Doctoral position: "Spectral Hole Burning for Ultra-stable Lasers and Atomic-scale Force Sensors"

SYRTE laboratory (Paris, France).
The aim of this PhD project is twofold. The successful applicant will improve the techniques of laser frequency stabilization, possibly down to the range of a few 10^-19 at 1 s, and will explore the fundamental limits of such techniques, unknown for the time being. Much work will be devoted to the development of ultra-low-noise detection techniques, and to exploring sub-100 mK temperature regime where ultra-narrow linewidth et unprecedented immunity to thermal noise and fluctuations are expected. In parallel, he/she will perform spectral hole burning experiments in the micro-mechanical resonator in order to study the opto-mechanical coupling. The underlying physics will probably shed light on the possibility of realizing atomic-scale force sensors in our system.
=> More information.

Postdoc and PhD positions on advanced atom interferometry for fundamental physics tests and for quantum sensing

Northwestern Center for Fundamental Physics at Low Energy (Chicago, USA).
Postdoc and PhD positions available in the (new) group of Tim Kovachy, currently a postdoc in Mark Kasevich's group at Stanford, who will be starting in the fall a faculty position at the Northwestern University.
The group will focus on using advanced atom interferometers for fundamental physics tests and for quantum sensing. One project will aim to look for new particles beyond the standard model, including light moduli associated with the compactified extra dimensions that arise in string theory, by searching for deviations from the gravitational inverse square law with improved sensitivity. The measurement will be carried out using a large area atom interferometric gravity gradiometer and well-characterized proof masses. This experimental setup could also be used for a new measurement of Newton’s gravitational constant.
Additionally, we are hoping to build a 100 meter tall atom interferometer at Fermilab to serve as a prototype gravitational wave detector for frequencies below those that can be studied by LIGO, opening up the potential for many new astrophysical discoveries. This instrument could also carry out sensitive dark matter searches.
=> More information.

Research Scientist in Quantum Sensors

Science and Technology Facilities Council (United Kingdom).
RAL Space Imaging Systems Division Space is looking for an experienced Cold Atom/Quantum Optics Physicist to contribute to our increasing project portfolio, initially in the development and commissioning of the RAL Space Atom Interferometer and its optimisation for space applications. Your duties will be as follow:
  • design and documentation of technologies and experimental facilities relating cold atom interferometers, atomic clocks and other quantum sensors
  • contribute to the establishment of partnerships with research institutes, universities and industry in the field of quantum sensors
  • contribute to project reviews, design reviews and progress meetings, within the UK and abroad
  • write specifications, test plans, test reports and other documentation as required
  • lead in and/or contribute to proposal preparation and costing
  • interact with external customers/suppliers during visits
  • report to the Quantum Sensors Group Leader, the Imaging Systems Division Head, Divisional Group Leaders and senior project staff as appropriate.
=> More information.

Junior Professorship in Experimental Quantum Technologies

Physikalisch-Technische Bundesanstalt PTB (in Braunschweig and Leibniz Universität Hannover, Germany).
The successful development of quantum technologies for industrial applications requires technical research at the highest level. The breadth of the topic is reflected in the possible foci of the new professorship. These include the development and implementation of concepts for (1) highly integrated active and passive optical components, as well as miniaturised complex optical setups for quantum sensors (e.g. optical clocks); (2) optical frequency comparisons over free-space paths for ground-ground and ground-satellite links; and (3) the metrological characterisation of single-photon sources and detectors for their application in quantum cryptography.
Substantive research in at least one of these areas should be demonstrated by the candidate. Relevant postdoctoral experience as well as successful third-party funding applications (e.g. DFG or EU funding) are desirable as well as very good English and German language skills. The position is equipped with funding for two postgraduate students (75% TVöD E13) and equipment funds. The junior research group is located in the new research facility “Hannover Institute of Technology (HITec)” and is designed to strengthen the work in the area of quantum technologies. Close collaboration with research groups at the PTB in the field of optical clocks, optical time and frequency transfer, and single photon metrology is expected, as well as commitment to teaching in experimental physics.
The junior professorship includes a commitment to teach at LUH for at least 2 hours per week.
=> More information.

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