* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download A quantum point contact for ultra cold Fermions
Relativistic quantum mechanics wikipedia , lookup
Double-slit experiment wikipedia , lookup
Scalar field theory wikipedia , lookup
Renormalization wikipedia , lookup
Delayed choice quantum eraser wikipedia , lookup
Quantum electrodynamics wikipedia , lookup
Bohr–Einstein debates wikipedia , lookup
Probability amplitude wikipedia , lookup
Aharonov–Bohm effect wikipedia , lookup
Quantum decoherence wikipedia , lookup
Theoretical and experimental justification for the Schrödinger equation wikipedia , lookup
Wave–particle duality wikipedia , lookup
Quantum field theory wikipedia , lookup
Copenhagen interpretation wikipedia , lookup
Quantum entanglement wikipedia , lookup
Matter wave wikipedia , lookup
Measurement in quantum mechanics wikipedia , lookup
Particle in a box wikipedia , lookup
Density matrix wikipedia , lookup
Bell's theorem wikipedia , lookup
Quantum dot wikipedia , lookup
Atomic theory wikipedia , lookup
Coherent states wikipedia , lookup
Renormalization group wikipedia , lookup
Orchestrated objective reduction wikipedia , lookup
Quantum fiction wikipedia , lookup
Many-worlds interpretation wikipedia , lookup
Hydrogen atom wikipedia , lookup
EPR paradox wikipedia , lookup
Quantum computing wikipedia , lookup
Interpretations of quantum mechanics wikipedia , lookup
Symmetry in quantum mechanics wikipedia , lookup
Quantum machine learning wikipedia , lookup
History of quantum field theory wikipedia , lookup
Quantum teleportation wikipedia , lookup
Quantum key distribution wikipedia , lookup
Quantum group wikipedia , lookup
Hidden variable theory wikipedia , lookup
A quantum point contact for ultra cold Fermions J.P. Brantut1 , S. Krinner1 , D. Husmann1 , M. Lebrat1 , D. Stadler1 , and T. Esslinger1 1 Department of Physics, ETH Zurich, 8093 Zurich, Switzerland [email protected] We report on the observation of quantized conductance in the transport of a neutral Fermi gas of atoms [1]. We employ ultra-high resolution lithography to shape light potentials that realize either a quantum point contact or a quantum wire for atoms. These constrictions are imprinted on a quasi two-dimensional ballistic channel connecting two adjustable reservoirs of quantum degenerate fermionic lithium atoms. By tuning either a gate potential or the transverse confinements of the constrictions, we observe distinct plateaus in the conductance for matter. The conductance in the first plateau is found to be equal to 1/ h, the universal conductance quantum. For low gate potentials we find good agreement between the experimental data and the Landauer formula with all parameters determined a priori. By tuning interactions using a Feshbach resonance, the same experimental configuration realises a superfluid point contact with a non-linear current-bias relation. [1] S. Krinner, D. Stadler, D. Husmann, J.P. Brantut and T. Esslinger, arXiv e-print 1404.6400 (2014).