Hamiltonian engineering of collective XYZ spin models in an optical cavity

Hamiltonian engineering of collective XYZ spin models in an optical cavity

Quantum simulations offer opportunities both for studying many-body physics and for generating useful entangled states. However, existing platforms are usually restricted to specific types of interaction, fundamentally limiting the models they can mimic. Here we realize an all-to-all interacting model with an arbitrary quadratic Hamiltonian, thus demonstrating an infinite-range tunable Heisenberg XYZ model. This was accomplished by engineering c…

Molecular Lego Stones: For the homogeneous Heisenberg chain, the researchers used the nanograph molecule Olympic, which consists of five carbon rings. Image: Empa DMZ – SCIENCE ¦ MM ¦ AA ¦ Dübendorf, St. Gallen and Thun – researchers from the Swiss Federal Institute for Materials Testing and Research (Empa) have experimented with an important theoretical model from quantum physics. The model is based on the work of the Nobel Prize winner in Phys…

Empa researchers at the nanotech@surfaces laboratory have experimented with a further fundamental theoretical model from quantum physics, which goes back to the Nobel Prize winner in Physics Werner Heisenberg. The basis for the successful experiment was a kind of "quantum lego" made of tiny carbon molecules, so-called nanographs.