Quantum mechanics

Penning trap

Trap (plumbing)

Telecommunications

Computer science

Metrology

Physics

Quantum entanglement

Optics

Focus (optics)

Quantum

Ion trap

Quantum discord

Meteorology

Quantum metrology

Frame (networking)

New Journal of Physics

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

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