Quantum Simulation

Toward dynamical gauge fields

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Science  27 Sep 2019:
Vol. 365, Issue 6460, pp. 1415-1416
DOI: 10.1126/science.365.6460.1415-d

Ultracold atomic gases have been proven to be a powerful tool for the quantum simulation of many-body systems. However, creating analogs of dynamical gauge fields—which couple to matter and govern the behavior of many systems that cold gases aim to simulate—has been challenging. Görg et al. build on methods used to engineer static gauge fields in optical lattices by “shaking” the lattice at two frequencies resonant with on-site interactions. The resulting tunneling matrix is density-dependent, creating a coupling between the gauge and matter fields in the system. The researchers anticipate that this advance will enable the exploration of exotic phases of matter.

Nat. Phys. 10.1038/s41567-019-0615-4 (2019).

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