Neutral Atom Arrays

• An array of individual atoms with each atom confined in an “optical tweezer”
  • Each tweezer is a focused laser beam
• Atoms can be pushed using laser beams

• $\delta$ is called the laser “detuning”
  • $\delta > 0$: blue-detuned; $\delta < 0$: red-detuned
• When laser is turned on, it shifts the ground-state energy by

where $\Omega_R$ is the Rabi frequency - Frequency of atom cycling between $g$ and $e$

and $\Gamma_e$ is the spontaneous rate of emission

Laser-atom Processes

• Stimulated Absorption

• Stimulated Emission

• Spontaneous Emission