Publications by Jean-Philippe Brantut

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Connecting strongly correlated superfluids by a quantum point contact

Jean-Philippe Brantut, Thierry Giamarchi

Point contacts provide simple connections between macroscopic particle reservoirs. In electric circuits, strong links between metals, semiconductors, or superconductors have applications for fundamental condensed-matter physics as well as quantum informati ...

American Association for the Advancement of Science2015

A Thermoelectric Heat Engine with Ultracold Atoms

Jean-Philippe Brantut

Thermoelectric effects, such as the generation of a particle current by a temperature gradient, have their origin in a reversible coupling between heat and particle flows. These effects are fundamental probes for materials and have applications to cooling ...

American Association for the Advancement of Science2013

Superfluidity with disorder in a thin film of quantum gas

Jean-Philippe Brantut

We investigate the properties of a strongly interacting superfluid gas of 6Li2 Feshbach molecules forming a thin film confined in a quasi-two-dimensional channel with a tunable random potential, creating a microscopic disorder. We measure the atomic curren ...

American Physical Society2013

Interferometric measurement of local spin fluctuations in a quantum gas

Jean-Philippe Brantut

Ultracold gases provide a controlled environment that is ideal for studying many intriguing phenomena associated with quantum correlated systems. Current efforts are directed towards the identification of magnetic properties, as well as the creation and de ...

Nature Publishing Group2012

Conduction of Ultracold Fermions Through a Mesoscopic Channel

Jean-Philippe Brantut

In a mesoscopic conductor, electric resistance is detected even if the device is defect-free. We engineered and studied a cold-atom analog of a mesoscopic conductor. It consists of a narrow channel connecting two macroscopic reservoirs of fermions that can ...

American Association for the Advancement of Science2012

Regimes of classical transport of cold gases in a two-dimensional anisotropic disorder

Jean-Philippe Brantut

We numerically study the dynamics of cold atoms in a two-dimensional disordered potential. We consider an anisotropic speckle potential and focus on the classical dynamics, which is relevant to some recent experiments. Firstly, we study the behavior of par ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2011

Frequency doubled 1534 nm laser system for potassium laser cooling

Jean-Philippe Brantut, Guillaume Stern

We demonstrate a compact laser source suitable for trapping and cooling potassium. By frequency doubling a fiber laser diode at 1534nm in a waveguide, we produce 767nm laser light. A current modulation of the diode allows us to generate the two required fr ...

2010

Local Observation of Antibunching in a Trapped Fermi Gas

Jean-Philippe Brantut

Local density fluctuations and density profiles of a Fermi gas are measured in situ and analyzed. In the quantum degenerate regime, the weakly interacting 6Li gas shows a suppression of the density fluctuations compared to the nondegenerate case, where ato ...

American Physical Society2010

Jean-Philippe Brantut

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Connecting strongly correlated superfluids by a quantum point contact

A Thermoelectric Heat Engine with Ultracold Atoms

Superfluidity with disorder in a thin film of quantum gas

Interferometric measurement of local spin fluctuations in a quantum gas

Conduction of Ultracold Fermions Through a Mesoscopic Channel

Observing the drop of resistance in the flow of a superfluid Fermi gas

Regimes of classical transport of cold gases in a two-dimensional anisotropic disorder

Frequency doubled 1534 nm laser system for potassium laser cooling

Local Observation of Antibunching in a Trapped Fermi Gas

A quantum trampoline for ultra-cold atoms

A Thermoelectric Heat Engine with Ultracold Atoms

Connecting strongly correlated superfluids by a quantum point contact

Interferometric measurement of local spin fluctuations in a quantum gas

Observing the drop of resistance in the flow of a superfluid Fermi gas

Regimes of classical transport of cold gases in a two-dimensional anisotropic disorder

Local Observation of Antibunching in a Trapped Fermi Gas

A quantum trampoline for ultra-cold atoms

Frequency doubled 1534 nm laser system for potassium laser cooling

Superfluidity with disorder in a thin film of quantum gas

Conduction of Ultracold Fermions Through a Mesoscopic Channel