QPU module

QdcEm.QPU — QPU data structure and initial-layout utilities.

Make

Make(Comm, EN, Processing_Qubits)

A lightweight data class that bundles the three qubit roles required by every QPU in the emulation.

Attributes

Name	Type	Description
`Comm`	`Qubit`	The communication qubit that mediates the entangled channel.
`EN`	`Qubit`	The environment ancilla qubit, recycled via reset between collisions.
`Processing_Qubits`	`list[Qubit]`	One or more processing qubits that hold the algorithm’s logical state.

Example

qpu_A = Make(Comm=qreg[0], EN=qreg[1], Processing_Qubits=[qreg[2], qreg[3]])

Get_Initial_Layout

Get_Initial_Layout(QPUs, QRG)

Constructs a Qiskit Layout object mapping the logical qubit register to physical device qubits. The layout is built in order: Comm, EN, then each qubit in Processing_Qubits, for each QPU in the list.

Parameters

Name	Type	Description
`QPUs`	`list[Make]`	Ordered list of QPU objects.
`QRG`	`QuantumRegister`	The circuit’s quantum register whose indices are mapped to physical qubits.

Returns Layout — Qiskit transpiler layout for use with transpile(..., initial_layout=...).