# Layout¶

class Layout(input_dict=None)[source]

Two-ways dict to represent a Layout.

construct a Layout from a bijective dictionary, mapping virtual qubits to physical qubits

Methods

 Layout.add(virtual_bit[, physical_bit]) Adds a map element between bit and physical_bit. Adds at the end physical_qubits that map each bit in reg. Layout.combine_into_edge_map(another_layout) Combines self and another_layout into an “edge map”. Returns a copy of a Layout instance. Layout.from_dict(input_dict) Populates a Layout from a dictionary. Layout.from_intlist(int_list, *qregs) Converts a list of integers to a Layout mapping virtual qubits (index of the list) to physical qubits (the list values). Layout.from_qubit_list(qubit_list) Populates a Layout from a list containing virtual qubits, Qubit or None. Creates a trivial (“one-to-one”) Layout with the registers in regs. Returns the dictionary where the keys are physical (qu)bits and the values are virtual (qu)bits. Returns the registers in the layout [QuantumRegister(2, ‘qr0’), QuantumRegister(3, ‘qr1’)] :returns: A list of Register in the layout :rtype: List Returns the dictionary where the keys are virtual (qu)bits and the values are physical (qu)bits. Layout.order_based_on_type(value1, value2) decides which one is physical/virtual based on the type. Given an ordered list of bits, reorder them according to this layout. Layout.swap(left, right) Swaps the map between left and right.