# State Expression

Allows calculations involving both states and scalars.

### Input

• $\psi$: State - Can be used as "s1" in the expression.
• $\psi$: State - Can be used as "s2" in the expression.
• Scalar - Can be used as "a" in the expression.
• Scalar - Can be used as "b" in the expression.

### Output

• $\psi$: State - The mixed state generated from the expression.

### Content

Allowed inputs into the expression-field are referenced on the Expressions-page. Unlike some other expression-nodes, this node does not have a direct dependence on a spatial dimension x, and so does not have access to several functions such as box or step. Also, this node does not have an option to automatically normalize resulting states.