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Portail > Offres > Offre UPR2940-FLOPOI-046 - Post-doctorat: calcul quantique économe en énergie avec des qubits de spin semi-conducteurs (H/F)

Post-doc position: energy-efficient quantum computing with solid-state spin qubits.

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : jeudi 4 mars 2021

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General information

Reference : UPR2940-FLOPOI-046
Workplace : GRENOBLE
Date of publication : Thursday, February 11, 2021
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 March 2021
Proportion of work : Full time
Remuneration : Salary between 2648 € and 3768 € gross monthly according to experience
Desired level of education : PhD
Experience required : Indifferent


Quantum computing is an emerging paradigm for information processing. It holds the promise to solve new classes of complex problems that would be classically untractable. The question of its energetic bill and impact on scalability, however, has been scarcely addressed by research programs so far – though it is a major issue that brings the classical computing paradigm at its limits.

One could naïvely expect quantum computing to have a natural “energetic advantage” over its classical counterpart, because of the reduced complexity of quantum algorithms. However, fault tolerant quantum computers are subjected to noise, potentially contain billions of physical qubits, and require embarked classical information processing devices to drive quantum gates and correct noise-induced errors. This huge physical overhead is bound to have a tremendous energy cost, unless appropriate strategies are planned in advance. Thus, understanding the thermodynamics of classical and quantum computing devices is not an option when designing future large-scale quantum computers. It requires to build new concepts and strategies at the interface between electronics engineering, cryogenics, thermodynamics and quantum physics.


The post-doc hired within the QLSI project will have the key role to set up such an interdisciplinary framework, with the aim to create new synergies between various areas of knowledge and develop energy-efficient strategies for scalable quantum information processing. In particular, she/he will build the models describing the energetics of single and two-qubit gates, and analyzing the energetic, entropic and informational flows in elementary NISQ and FT algorithms performed on the Silicon platform developed in Grenoble. This framework will then be exploited to design energy-efficient computing scenarios. Ultimately, it will allow benchmarking the technologies at stake for quantum information processing, and put new constraints on their potential for scalability.
The post-doc is funded by the QLSI project, that aims to implement scalable quantum information processing on solid-state spin qubits. The main objectives include the production and operation of 16 qubits quantum processors based on industry compatible semiconductor technology, the demonstration of high fidelity single and two-qubit gates with these devices, the release of a quantum computing prototype (8 qubits) available online, and the documentation of the detailed requirements to address scalability towards large systems with over 1000 qubits. To match these ambitious goals, the consortium brings together a complementary set of leading European players working on spin quantum bits in semiconductors, with the track-record and expertise to scale and industrialize this technology.


• An excellent first degree and a completed doctorate (or close to completion) in physical sciences.
• A strong background in the theory and modeling of spin qubits and in quantum optics.
• The ability to perform innovative and effective research in condensed matter evidenced by a strong publication record (commensurate with stage in career) in peer-reviewed journals or pre-prints.
• Ability to work in interdisciplinary projects (experiments, theory, industry).
• Evidence of outstanding ability to work independently, and as an active collaborative member of a research team, who is well organized and self-motivated, while working cooperatively at all levels. Be highly motivated and have a strong commitment to research.
• Good communication skills both orally and in written English, suitable for the preparation of scientific publications in world-class journals and presentation of research at international conferences.

Work Context

A 2 years post-doctoral position is available to work on the energetic aspects of quantum information processing with spin qubits. The research will be conducted in the theory group of Dr. A. Auffèves (Institut Néel, CNRS and University Grenoble Alpes) in close collaboration with the Grenoble Quantum Silicon group. The position is part of the “Quantum computing - Large Scale Integration” project (QLSI, 2020-2024) funded by the FET-Flagship on Quantum Technologies.
The post-doc will benefit from the expertise acquired by the Institut Néel partner in the thermodynamics aspects of quantum computing and stochastic thermodynamics, and more generally from the vibrant environment of the Grenoble ecosystem for quantum technologies. She/he will set up a close collaboration with the Grenoble Quantum Silicon Group that gathers leading experts in experiments and modelling with silicon spin qubits and CMOS technologies. In addition to the natural interaction with the various partners of the QLSI consortium, the post-doc will contribute to a long-term collaboration between A. Auffèves (Néel), R. Whitney (LPMMC) and H.K. Ng (Yale-NUS, Center for Quantum Technologies, MajuLab, Singapore) on fault tolerant quantum computing with limited resources.
The Institut NEEL is one of the largest French national research institutes for fundamental research in condensed matter physics enriched by interdisciplinary activities at the interfaces with chemistry, engineering and biology. It is located in the heart of a unique scientific, industrial and cultural environment. It is part of one of Europe's biggest high-tech environment in micro- and nanoelectronics, right next to the French Alpes.

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