Cirq Pasqal

1.6.1 verified Mon Apr 27 auth: no python

A Cirq package to simulate and connect to Pasqal quantum computers. Provides PasqalQubit, PasqalDevice, and utilities for running circuits on Pasqal's neutral atom quantum processors. Current version: 1.6.1 (part of Cirq v1.6.1). Release cadence follows Cirq releases.

pip install cirq-pasqal

Common errors

error ModuleNotFoundError: No module named 'cirq_pasqal' ↓

cause cirq-pasqal is not installed or not imported correctly.

fix

Run pip install cirq-pasqal and import as from cirq_pasqal import ....

error AttributeError: module 'cirq' has no attribute 'pasqal' ↓

cause Attempting to import from cirq.pasqal instead of the separate package.

fix

Use from cirq_pasqal import PasqalQubit, PasqalDevice.

error ValueError: Gate not supported on this device ↓

cause Using a gate that is not in the device's supported operations.

fix

Check device.supported_operations() and use only those gates.

Warnings

deprecated Cirq-Pasqal is part of the Cirq ecosystem but may be deprecated or removed in future Cirq versions. Always check the latest Cirq release notes for vendor package changes. ↓

fix Monitor Cirq releases at https://github.com/quantumlib/cirq/releases for deprecation notices.

gotcha PasqalDevice may not support all gate sets. Using a gate not available on Pasqal hardware will raise an error. ↓

fix Check device specifications or use `PasqalDevice.supported_operations` to list available gates.

gotcha Simulation with real device parameters requires valid Pasqal credentials and internet connection. Local simulation with `cirq.Simulator` does not enforce device topology. ↓

fix For hardware-accurate simulation, instantiate a PasqalDevice with a valid emulator config.

Install

pip install cirq-pasqal==1.6.1

Imports

PasqalQubit
wrong
```
from cirq.pasqal import PasqalQubit
```
correct
```
from cirq_pasqal import PasqalQubit
```
cirq-pasqal is a separate pip package; import from cirq_pasqal, not cirq.pasqal.

PasqalDevice

wrong

from cirq.pasqal import PasqalDevice

correct

from cirq_pasqal import PasqalDevice

Same as above, must use cirq_pasqal top-level.

Quickstart

Basic usage: create Pasqal qubits, build a Bell state circuit, and simulate locally.

import cirq
from cirq_pasqal import PasqalQubit, PasqalDevice

# Define qubits
qubits = [PasqalQubit(i) for i in range(2)]
# Create a simple circuit
circuit = cirq.Circuit(
    cirq.H(qubits[0]),
    cirq.CNOT(qubits[0], qubits[1]),
    cirq.measure(*qubits, key='result')
)
print(circuit)

# Simulate using Cirq's simulator
simulator = cirq.Simulator()
result = simulator.run(circuit, repetitions=100)
print(result.histogram(key='result'))