libquantum provides an efficient model to simulate the effects of
decoherence. The effects are simulated by a random rotation about the
z axis, where the angle of the rotation is a normal distributed value
with the variance .
is the decoherence parameter,
which depends on the experimental realization of the quantum
computer. A list of values for
is given in [DiVincenzo, 1995].
extern void quantum_set_decoherence(float lambda); |
This function sets the decoherence parameter which affects
all following quantum operations.
extern void quantum_decohere(quantum_reg *reg); |
Perform a decoherence step on a quantum register. Note that this function gets called automatically by all elementary gates provided by libquantum.