# cirq.asymmetric_depolarize¶

cirq.asymmetric_depolarize(p_x: float, p_y: float, p_z: float) → cirq.ops.common_channels.AsymmetricDepolarizingChannel[source]

Returns a AsymmetricDepolarizingChannel with given parameter.

This channel evolves a density matrix via

$$\rho \rightarrow (1 - p_x - p_y - p_z) \rho + p_x X \rho X + p_y Y \rho Y + p_z Z \rho Z$$

Parameters
• p_x – The probability that a Pauli X and no other gate occurs.

• p_y – The probability that a Pauli Y and no other gate occurs.

• p_z – The probability that a Pauli Z and no other gate occurs.

Raises

ValueError – if the args or the sum of the args are not probabilities.