Towards non-destructive transport measurements of interacting fermions

Hideki Konishi, Kevin Roux, Barbara Cilenti, Victor Helson and Jean-Philippe Brantut
Institute of Physics, EPFL, 1015 Lausanne, Switzerland

In recent years, it has become possible to investigate transport phenomena using ultracold atoms in a two-terminal configuration where two reservoirs are connected through a mesoscopic channel [1]. The measurements, however, rely on comparing different samples because of the destructive nature of probing methods, which makes the measurements sensitive to even very weak fluctuation in the atomic sample preparation. In order to achieve more precise measurements, we will implement non-destructive measurements of the atomic current featuring the cavity QED technique [2]. We are currently developing a new apparatus where a degenerate Fermi gas of lithium-6 will be coupled to a high-finesse optical cavity. In the poster, we will discuss the non-destructive probing scheme using the high-finesse cavity and present the recent progress on the experimental apparatus.

References
[1] S. Krinner et al., Journal of Physics: Condensed Matter 29, 343003 (2017).
[2] S. Uchino et al., arXiv: 1802.04024 (2018).