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qoqo
Quantum Operation Quantum Operation
Yes we use reduplication
qoqo/roqoqo is a toolkit to represent quantum circuits by HQS Quantum Simulations.
For a detailed introduction see the user documentation and the qoqo examples repository
What roqoqo/qoqo is:
- A toolkit to represent quantum programs including circuits and measurement information
- A thin runtime to run quantum measurements
- A way to serialize quantum circuits and measurement information
- A set of optional interfaces to devices, simulators and toolkits (e.g. qoqo_quest, qoqo_mock, qoqo_qasm)
What roqoqo/qoqo is not:
- A decomposer translating circuits to a specific set of gates
- A quantum circuit optimizer
- A collection of quantum algorithms
This repository contains two components:
- roqoqo: the core rust library
- qoqo: the python interface to roqoqo
roqoqo
roqoqo provides:
- A
Circuit
struct to represent quantum circuits - A
QuantumProgram
enum to represent quantum programs using different measurement methods - Structs representing single-qubit, two-qubit, multi-qubit and measurement operations that can be executed (decomposed) on any universal quantum computer
- Structs representing so-called PRAGMA operations that only apply to certain hardware, simulators or annotate circuits with additional information
- Enums that group operations based on the properties of operations (e.g.
Operation
for all operations orSingleQubitGateOperation
for all unitary operations acting on a single qubit) - Support for symbolic variables
- Readout based on classical registers
- Measurement structs for evaluating observable measurements based on raw readout date returned by quantum computer backends
- An
EvaluatingBackend
trait defining a standard for interfacing from qoqo to hardware and simulators that can return measured values - A
Device
trait defining a standard to obtain connectivity information and a noise model for quantum computing devices - Serialize and deserialize support for
Circuit
andQuantumProgram
via the serde crate.
This software is still in the beta stage. Functions and documentation are not yet complete and breaking changes can occur.
Installation
To use roqoqo in a Rust project simply add
roqoqo = {version="1.0"}
to the [dependencies]
section of the project Cargo.toml.
qoqo
qoqo provides the Python interface to the underlying roqoqo library, including:
- A
Circuit
class to represent quantum circuits - A
QuantumProgram
class to represent quantum programs - Classes representing single-qubit, two-qubit, multi-qubit and measurement operations that can be executed (decomposed) on any universal quantum computer
- Classes representing so-called PRAGMA operations that only apply to certain hardware, simulators or annotate circuits with additional information
- Support for symbolic variables
- Readout based on classical registers
- Measurement classes for evaluating observable measurements based on raw readout date returned by quantum computer backends
- Serialization to json and deserialization from json for circuits and measurement information. Serialization support can easily be expanded to other targets with the help of the serde crate.
Installation
On Linux, macOS and Windows on x86 precompiled packages can be found on PyPi and installed via
pip install qoqo
If no pre-built python wheel is available for your architecture you can install qoqo from the source distribution using a rust toolchain (for example available via rustup) and maturin (also available via pip). After installing the rust toolchain and maturing run the same pip install command as above. In some cases on macOS it can be necessary to provide specific linker arguments as shown below:
# can be necessary on mscOS
RUSTFLAGS="-C link-arg=-undefined -C link-arg=dynamic_lookup" pip install qoqo
RUSTFLAGS="-C link-arg=-undefined -C link-arg=dynamic_lookup" maturin build -m qoqo/Cargo.toml --release
pip install target/wheels/$NAME_OF_WHEEL
When using qoqo in a rust project providing a python interface add
qoqo = {version="1.0", default-features=false}
to the [dependencies]
section of the project Cargo.toml.
A source distribution now exists but requires a Rust install with a rust version > 1.47 and a maturin version { >= 0.12, <0.13 } in order to be built.
Examples
Since qoqo provides a full python interface to the underlying roqoqo library, there are examples for python users and for Rust users.
For an expanded collection of examples please see the jupyter notebooks in the extra repository qoqo_examples. The qoqo examples require the qoqo_quest and qoqo_mock interfaces.
- qoqo examples: For jupyter notebooks in python, please refer to qoqo_examples/qoqo/.
- roqoqo examples: The jupyter notebooks in Rust can be found in qoqo_examples/roqoqo/notebooks/. Alternatively, you can also find pure Rust versions of the examples in qoqo_examples/roqoqo/standalone/
This project has been partly supported by PlanQK and is partially supported by QSolid and PhoQuant.
Contributing
We welcome contributions to the project. If you want to contribute code, please have a look at CONTRIBUTE.md for our code contribution guidelines.
In order to facilitate the contribution of the addition of a new gate, please also have a look at add_new_gate.md to read a quick explanation of the main steps necessary.
Dependencies
~15–23MB
~361K SLoC