qubiter.adv_applications.StairsDeriv_rigetti module

class qubiter.adv_applications.StairsDeriv_rigetti.StairsDeriv_rigetti(qc, deriv_gate_str, gate_str_to_rads_list, file_prefix, parent_num_qbits, hamil, **kwargs)

Bases: qubiter.adv_applications.StairsDeriv.StairsDeriv

This class is a child of StairsDeriv. Its main purpose is to override the method get_mean_val() of its abstract parent class StairsDeriv. In this class, the simulation necessary to evaluate the output of get_mean_val() is done by Rigetti Pyquil simulators or their physical qc device.

Variables:

• qc (QuantumComputer) – returned by PyQuil method get_qc()
• translation_line_list (list[str]) – a list of lines of PyQuil code generated by the translator. The lines all start with “pg +=”.
• translator (Qubiter_to_RigettiPyQuil) –

__init__(qc, deriv_gate_str, gate_str_to_rads_list, file_prefix, parent_num_qbits, hamil, **kwargs)

Constructor

Parameters:

• qc (QuantumComputer) –
• deriv_gate_str (str) –
• gate_str_to_rads_list (dict[str, list[float|str]]) –
• file_prefix (str) –
• parent_num_qbits (int) –
• hamil (QubitOperator) –
• kwargs (dict) – key-word arguments of MeanHamil

get_mean_val(var_num_to_rads)

This method returns a list partials_list consisting of 4 floats which are the partial derivatives wrt the 4 possible derivative directions ( deriv_direc), of the multi-controlled gate U specified by self.deriv_gate_str.

Parameters:var_num_to_rads (dict[int, float]) – Returns: Return type:list[float]