feat(backends): allow statevector simulation via use_statevector flag#56
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dlyongemallo wants to merge 20 commits into
Open
feat(backends): allow statevector simulation via use_statevector flag#56dlyongemallo wants to merge 20 commits into
use_statevector flag#56dlyongemallo wants to merge 20 commits into
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Introduce a framework-agnostic backend abstraction layer: - `GateType` enum covering all gates used by quantumaudio schemes - `GateOp` frozen dataclass for a single gate operation - `CircuitSpec` with fluent builder API and Mottonen state-prep decomposition for non-negative real state vectors into RY + CX gates - `UnifiedResult` normalising execution output across backends, with `to_qiskit_result()` bridge for backward compatibility - Backend `ABC` and `BackendRegistry` singleton for provider discovery - `is_available()` and `require()` helpers for optional dependencies - Tests covering the above
Implement the `Backend` interface for Qiskit/AerSimulator, translating `CircuitSpec` to `QuantumCircuit` with named register reconstruction from metadata. Wire up the public API with `get_backend()` and `available_backends()` functions, and auto-register the Qiskit provider on import.
Implement the `Backend` interface for Google Cirq with automatic registration when `cirq` is installed. Cirq is added as an optional dependency under the `[cirq]` extras group.
…Qiskit types Add `CircuitSpec` and `UnifiedResult` branches to `get_counts()`, `get_metadata()`, and `pick_key_from_instance()` in `results.py`. Update `draw_circuit()` in preview.py to convert `CircuitSpec` to `QuantumCircuit` for visualisation. All existing Qiskit-only code paths are preserved.
… compat BREAKING CHANGE: `encode()` now returns `CircuitSpec` instead of `QuantumCircuit`.
BREAKING CHANGE: The `execute_function` parameter is removed from all scheme `decode()` methods, as it is redundant with the backend system. The `ExecuteFunction` protocol is removed from `quantumaudio.utils.execute`. The backend parameter and the lower-level `decode_counts()`/`decode_result()` methods cover all use cases.
Runs `ruff check` plus `pytest` across Python 3.9-3.12 with the `cirq`, `pennylane`, and `cudaq` extras installed.
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Depends on #55.
Closes #40.