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diff --git a/SS2026/Quantum Computing/15. Ion-based/Ion-based Quantum Computers.md b/SS2026/Quantum Computing/15. Ion-based/Ion-based Quantum Computers.md
index e69de29..8d46193 100644
--- a/SS2026/Quantum Computing/15. Ion-based/Ion-based Quantum Computers.md	
+++ b/SS2026/Quantum Computing/15. Ion-based/Ion-based Quantum Computers.md	
@@ -0,0 +1,27 @@
+We will look at an approach of building a quantum computer by using trapped ions:
+
+We look at single atoms with one electron orbiting the nucleus.
+The quantum state is encoded as the orbital of the electron.
+
+## Setup
+
+![[Pasted image 20260805193638.png]]
+
+
+## Operations
+
+### Cooling
+
+An ion of energy level $E_i$ when hit by a photon of energy level $E_j-E_i$ will go to energy level $E_j$
+
+![[Pasted image 20260805194238.png]]
+![[Pasted image 20260805194245.png]]
+
+### Measurements
+![[Pasted image 20260805194600.png]]
+
+### Unitaries
+
+![[Pasted image 20260805194614.png]]
+![[Pasted image 20260805194630.png]]
+![[Pasted image 20260805194639.png]]
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