qutip-qip

library0.4.1pypypi✓ verified 87d ago

QuTiP-qip is an extension to QuTiP for quantum information processing tasks, including circuit simulation, pulse-level control, and quantum gates. It provides tools for building and simulating quantum circuits on various hardware platforms. Current version 0.4.1 supports QuTiP 5.x, with basic circuit simulation and support for basic gate operations on qubits. Release cadence is irregular, with occasional updates.

ai-ml

pip install qutip-qip

github ↗homepage ↗

INSTALL

IMPORT

SIG · QUTIP-QIP

qutip-qip

ai-mlpythonv0.4.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

QubitCircuit

✓ from qutip_qip.circuit import QubitCircuit

Standard import path

Gate

✓ from qutip_qip.circuit import Gate

SpinChain

✓ from qutip_qip.device import SpinChain

Processor

✓ from qutip_qip.processor import Processor

Create and simulate a simple Bell state circuit.

import qutip_qip from qutip_qip.circuit import QubitCircuit, Gate # Create a quantum circuit with 2 qubits qc = QubitCircuit(2) qc.add_gate("SNOT", targets=[0]) qc.add_gate("CNOT", targets=[1], controls=[0]) # Display the circuit print(qc) # Run simulation result = qc.run() print(result)

Debug

Known issues

breakingqutip-qip 0.4.x is compatible only with QuTiP 5.x, not QuTiP 4.x. Installing with QuTiP 4.x will cause import errors or broken functionality.

fix

Ensure QuTiP 5.x is installed: pip install 'qutip>=5'

affects: >=0.4,<0.5

gotchaThe 'QubitCircuit.run()' method returns a state object (typically a Qobj). It does not return a dictionary of counts or measurements like some other simulators. Users expecting measurement outcomes often get confused.

fix

To get measurement outcomes, explicitly apply measurement gates to the circuit and use state.measure() or similar.

affects: all

deprecatedImporting from 'qutip.qip' is deprecated in QuTiP 5 and qutip-qip 0.4. Use 'qutip_qip' instead.

fix

Change 'from qutip.qip import ...' to 'from qutip_qip import ...'

affects: >=0.4

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'qutip_qip'

qutip-qip not installed or installed in wrong environment.

fix

Run: pip install qutip-qip

AttributeError: module 'qutip_qip' has no attribute 'circuit'

Importing incorrectly; need to import submodules explicitly.

fix

Use: from qutip_qip.circuit import QubitCircuit

ImportError: cannot import name 'QubitCircuit' from 'qutip_qip'

The top-level package does not export QubitCircuit directly.

fix

Use: from qutip_qip.circuit import QubitCircuit

Upgrade

Version history

0.4.1latest on PyPI · released Apr 7, 2025

Audit

Dependencies

qutiprequiredCore dependency for quantum state representations and operations

Agent activity

8 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/qutip/qutip-qip ↗

homepagehttps://github.com/qutip/qutip-qip ↗