StateVector

Quantarhei package (http://www.github.com/quantarhei)

statevector module

class quantarhei.qm.hilbertspace.statevector.StateVector(dim=None, data=None)

Represents a quantum mechanical state vector

Examples

>>> psi = StateVector(2)
>>> print(psi.dim)
2

>>> vec = numpy.zeros((1,3), dtype=REAL)
>>> psi = StateVector(data=vec)
Traceback (most recent call last):
...
Exception: Data has to be a vector

Attributes:

data

Methods

dot(vec)	Scalar product of two StateVectors
get_DensityMatrix()	Constructs DensityMatrix from the present StateVector
norm()	Returns the norm of the StateVector
transform(SS[, inv])	Transformation of the operator by a given matrix

get_current_basis
protect_basis
set_current_basis
unprotect_basis

dot(vec)

Scalar product of two StateVectors

get_DensityMatrix()

Constructs DensityMatrix from the present StateVector

norm()

Returns the norm of the StateVector

transform(SS, inv=None)

Transformation of the operator by a given matrix

This function transforms the Operator into a different basis, using a given transformation matrix.

Parameters:

• SS (matrix, numpy.ndarray) – transformation matrix
• inv (matrix, numpy.ndarray) – inverse of the transformation matrix