AtomicDensityMatrix`

AtomicDensityMatrix`

# Parity

Parity

is a parameter for AtomicState that specifies the parity of the state.

Parity[state]

returns the value specified for Parity in AtomicState state, or Parity[StateLabel[state]] if it is not specified.

# Details and Options

- Possible values for Parity are Even and Odd.
- Parity is automatically threaded over a list of AtomicState objects appearing as its argument.
- The value of Parity is used to determine which states are coupled by the E1 Hamiltonian.

# Examples

## Basic Examples (1)

A three level system with two even-parity states and one odd-parity state:

Opposite-parity states are coupled by the E1 Hamiltonian, but same-parity states are not:

By default, LevelDiagram puts even-parity states on the left and odd-parity states on the right: