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# Dr.
Audrey Cottet : research summary back to menu

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I performed an
experimental PhD on *superconducting quantum bits* (Saclay,
France, 1999-2002). This work led to the first superconducting quantum bit
prototype with a lifetime of the order of a microsecond [Science **296**, 886 (2002)]. After my
thesis, I became a theorist of *hybrid mesoscopic electronic circuits*.
I was a post-doc in Basel, Switzerland (2002-2005), and then Paris (2005-2008),
working on *spin dependent transport in
quantum dots* as well as *superconducting and ferromagnetic proximity
effects in hybrid diffusive structures*. Highlights from my post-docs
include the development of *gate-controlled nanospintronics
with carbon nanotubes* [Nature Phys. **1**, 99 (2005)], a prediction
of *positive
current cross-correlations in quantum dot circuits* [Phys. Rev.
Lett. **92**, 206801 (2004) /
Phys. Rev. B **70**, 115315 (2004)], which
was realized experimentally in 2007 in the group of C. Marcus in Harvard, and
the development of *spin-dependent boundary conditions for quasi-classical
superconductivity* [Phys.
Rev. B **72**, 180503(R) (2005)
/ Phys. Rev. B **80**, 184511 (2009)]. Since my
arrival at the Laboratoire Pierre Aigrain
of ENS-Paris, I am mainly focusing on the development of *Mesoscopic Quantum
Electrodynamics* (or Cavity Quantum Electrodynamics with hybrid nanocircuits), in close collaboration with the experimental
"Hybrid
Quantum Circuits" team. The first experimental results of this
collaboration include the observation of a *coherent spin/photon coupling at the single
spin level* [Science
**349**, 6246 (2015)],
photon-emission by a quantum dot/superconductor junction [Phys. Rev. X, 6, 021014 (2016)] and the *freezing
of the charge dynamics in a Kondo impurity* [Nature **545**,
71 (2017)]. More details on these different activities can be found
below.

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