cirq.ops.amplitude_damp

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Returns an AmplitudeDampingChannel with the given probability gamma.

View aliases

Main aliases

`cirq.amplitude_damp`, `cirq.ops.common_channels.amplitude_damp`

cirq.ops.amplitude_damp(
    gamma: float
) -> cirq.ops.AmplitudeDampingChannel

This channel evolves a density matrix via:

$$
\rho \rightarrow M_0 \rho M_0^\dagger + M_1 \rho M_1^\dagger
$$

With:

\[ \begin{aligned} M_0 =& \begin{bmatrix} 1 & 0 \\ 0 & \sqrt{1 - \gamma} \end{bmatrix} \\ M_1 =& \begin{bmatrix} 0 & \sqrt{\gamma} \\ 0 & 0 \end{bmatrix} \end{aligned} \]

Args
gamma	the probability of the interaction being dissipative.

Raises
ValueError	if gamma is not a valid probability.