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Portal > Offres > Offre UPR2940-ELOBER-026 - Chercheur en systèmes hybrides spin mécaniques (H/F)

Post-doc: Hybrid spin mechanical systems (M/F)

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

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General information

Reference : UPR2940-ELOBER-026
Workplace : GRENOBLE
Date of publication : Tuesday, June 30, 2020
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 October 2020
Proportion of work : Full time
Remuneration : Between 2648.79 € and 3054.06 € gross salary according to experience.
Desired level of education : PhD
Experience required : Indifferent

Missions

The goal of this post-doctorate will be to study the various aspects of the hybrid interaction between a SiC nanowire and a single spin with the motivation to realize a quantum non demolition mechanical readout of the spin state.

Activities

Nano-optomechanical systems, which couples a light field to a nanomechanical oscillator, have demonstrated outstanding sensitivities for force measurements. Using a suspended Silicon Carbide nanowire readout by a focused laser beam we already demonstrated sensitivities in the atto-Newton (10-18 N) range [1].
Moreover the vibrations of these nanowires consist in nearly degenerated and orthogonal transverse eigenmodes which allows for vectorial sensing capabilities.
These amazing features, which have been employed to investigate optical and electrostatic force fields [1] will be used to measure the faint interaction to a single spin qubit [2].
A single electronic spin hosted by a NV center in diamond will be coupled to the nanowire dynamics using a strong magnetic field gradient, as in a Stern and Gerlach experiment.

Activities:
- Design / realisation of an experiment coupling optomechanical measurements and quantum control of a single NV center.
- Theoretical modeling and interpretation of the results.
- Preparation and micro manipulation of nanowires serving as ultra sensitive force probes.
- Design / realisation of microwave circuits for resonant excitation of the NV center's spin.

References:
[1] L. Mercier de Lépinay et al., Nature Nano 12, 156-162 (2016)
[2] B.Pigeau et al, Nature Comm. 6, 8603 (2015)

Skills

The candidate should have a strong theoretical background in quantum mechanics, optics and/or nano-mechanics.
Experimental work involves optics, nanomechanics, vacuum technology and microwave design.
Prior knowledge in programming (in Python) is welcome.

Work Context

The Institut Néel – one of the largest French national research institutes in condensed matter physics – 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 Alps.
The post-doc researcher will be part of the Nano-Optics and Forces team, in Physics Light Matter department of Institut Néel.

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