Bang-bang shortcut to adiabaticity in the Dicke model as realized in a Penning trap experiment

Abstract

We introduce a bang-bang shortcut to adiabaticity for the Dicke model, which\nwe implement via a 2-D array of trapped ions in a Penning trap with a\nspin-dependent force detuned close to the center-of-mass drumhead mode. Our\nfocus is on employing this shortcut to create highly entangled states that can\nbe used in high-precision metrology. We highlight that the performance of the\nbang-bang approach is comparable to standard preparation methods, but can be\napplied over a much shorter time frame. We compare these theoretical ideas with\nexperimental data which serve as a first step towards realizing this\ntheoretical procedure for generating multi-partite entanglement.\n