Lecture 18 - Finishing Neutral Atom Implementation

Recall from last time:

![[Physics CPE 345 Quantum Computing Lecture slides Week 6 Implementation of quantum computing 240513.pdf#page=17]]

Pulse 1:

| ψ_{1} ⟩ = \frac{1}{2} (| 00 ⟩ + | 01 ⟩ + | r 0 ⟩ + | r 1 ⟩)

Pulse 2:

| ψ_{2} ⟩ = \frac{1}{2} (| 00 ⟩ \underset{picked up phase difference}{\underset{⏟}{-}} | 01 ⟩ + | r 0 ⟩ + | r 1 ⟩)

(the negative sign comes from spinors).
Pulse 3:

| ψ_{3} ⟩ = \frac{1}{2} (| 00 ⟩ - | 01 ⟩ - | 10 ⟩ - | 11 ⟩)

again more minus signs are picked up once the last $π$ phase is added.