epraya.JPauli

JPauli(s)

Defines the Pauli matrices for the spin s.

Parameters:

s (float) – Spin operator value of the system.

Returns:

• sx (jax.numpy.array) – Pauli matrix of the spin x component.

• sy (jax.numpy.array) – Pauli matrix of the spin y component.

• sz (jax.numpy.array) – Pauli matrix of the spin z component.

Example

>>> import epraya as epr
>>> s = 1
>>> sx, sy, sz = epr.JPauli(s)
>>> print(sx, sy, sz)
[[0.        +0.j 0.70710677+0.j 0.        +0.j]
[0.70710677+0.j 0.        +0.j 0.70710677+0.j]
[0.        +0.j 0.70710677+0.j 0.        +0.j]]
[ 0.+0.j         -0.-0.70710677j  0.+0.j        ]
[ 0.+0.70710677j  0.+0.j         -0.-0.70710677j]
[ 0.+0.j          0.+0.70710677j  0.+0.j        ]]
[ 1.  0.  0.]
[ 0.  0.  0.]
[ 0.  0. -1.]]