Generates a Lindblad superoperator from user-specified left-side and right-side product superoperators and calibrates it using the experimental relaxation rate of a user-specified state.

## Syntax

    R=lindbladian(A_left,A_right,rho,rlx_rate)


## Arguments

    A_left   - left side product superoperator of the
interaction that is causing relaxation
(see operator.m and hamiltonian.m)

A_right  - right side product superoperator of the
same interaction

rho      - the state vector whose relaxation rate
is known from the experiment

rlx_rate - experimental relaxation rate of rho


## Outputs

    R        - Lindblad relaxation superoperator indu-
ced by the interaction A, such that
<rho|R|rho>/norm(rho,2)^2 = -rlx_rate