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THE OPEN-SOURCE SOFTWARE PLATFORM FOR QUBIT CALIBRATION AND CHARACTERIZATION ROUTINES

Qblox provides a completely open-source software stack, called Quantify, to control experiments on Qblox Cluster and SPI hardware.

Quantify is a python-based, high-level data acquisition platform focused on providing all the necessary tools for Quantum Computing experiments. It is built on top of QCoDeS, and is the successor of the extensively tested PyQED measurement environment.

The simple software framework enables setting-up typical characterisation experiments and advanced experimental procedures with ease-of-use.

Quantify allows implementing Automated Calibration routines for typical quantum computing experiments such as qubit and resonator spectroscopy, Rabi and Ramsey oscillation experiments.

Together with the advanced sequence processors, auto-calibration routines bring the coherent control of individual qubits to an advanced level where significant amount of experimental time can be saved.

The open-source BSD 4 licensed platform is initiated by Qblox and Orange Quantum Systems. All the functionality of the software is well-documented in Read-the-Docs, basic tutorials are given for quick set-up and start of the measurement, whereas advanced sequencing tutorials are also featured for more complex experiments.

Quantify is provided together with APIs that can be interfaced at the level of SCPI, python or QCoDeS. All of the levels are open source, well-documented and tested in a CI pipeline.

Quantify is compatible with various quantum platforms such as transmons, spin-qubits or NV-centers and can also be used with any equipment from other vendors that supports QCoDeS drivers. Quantify currently consists of two modules:

Quantify-Core​​
https://quantify-quantify-core.readthedocs-hosted.com​

Quantify-Scheduler
https://quantify-quantify-scheduler.readthedocs-hosted.com

QUANTIFY-CORE MASTERING EXPERIMENTS WITH A COMPLETE DATA-ACQUISITION LOOP

Quantify-Core is the software module that contains all basic functionality to control (advanced) experiments. This includes a python based framework to control all instruments called MeasurementControl.

This package enables you to perform the complete data-acquisition loop; set parameters, analyze measurements and store data. On top it lets you execute several high-level tasks all in one place.

DataStorageMeasurementControl (MC) is in charge of the data-acquisition loop and is based on the notion that, in general, an experiment consists of the following three steps: Initialization (set parameter(s)), Measurement (get parameter(s)) and Datastorage.

The MeasurementControl can also be used to perform more advanced experiments such as 2D scans, pulse-sequences where the hardware is in control of the acquisition loop, or adaptive experiments in which it is not known what data points to acquire in advance but are determined dynamically during the experiment.

The Quantify-Core page on Gitlab provides an introduction to get you familiar with the easy-to-use concepts of MeasurementControl.

The installation guide and various tutorials guide you step-by-step through the advanced capabilities in a matter of hours. Take a look at some of the tutorial notebooks for more in-depth examples of usage and application.

Quantify-Core​​
https://quantify-quantify-core.readthedocs-hosted.com​

  • Looping and sweeping of any QCoDeS instrument parameter
  • Adaptive Measurements: Adaptive sampling and classical minimization algorithms.
  • Data saving, using X-array
  • Parameter monitoring and live visualization of experiments.
  • Data analysis and fitting.

QUANTIFY-SCHEDULER FOR HYBRID SCHEDULING AT NANO-SECOND LEVEL

Quantify-Scheduler is a module for defining time-domain experiments with deterministic timing at the nano-second level.

To make it convenient for variational algorithms (like calibrations) it features a unique hybrid control model allowing quantum gate- and pulse-level descriptions to be combined in a clearly defined and hardware-agnostic way.

An example is the Chevron experiment where QASM operations (initialization, single-qubit gates, measurements) are mixed with a classically-defined flux pulse.

Deterministically timed sequences can be created to make full use of the advanced sequencing capabilities of Qblox equipment. This perfect alignment makes full use of all capabilities of the Cluster Qubit Control (QCM) and Readout modules (QRM) and optimizes workflow.

Quantify-scheduler is designed to allow experimentalists to easily define complex experiments, and produces synchronized pulse schedules to be distributed to control hardware.

A typical layered workflow starts at the top layer of the software stack with a high level visualization, where the experiment is expressed with QASM-like gate level instructions, arbitrary pulses or with their combination.

Then, on the second level, instructions become device aware by being converted into pulse shapes, frequencies or timing information corresponding to the quantum processor type (transmons, dots, NV center etc.).

On the third layer, QCoDeS drivers comes into play to add electronics-specificity and compiling them to the back-end (in this example Qblox Instruments).

Finally, the experiment instructions are visualized on the host PC for debugging and further played at the output channels of the modules.

Quantify-Scheduler
https://quantify-quantify-scheduler.readthedocs-hosted.com/

QUANTIFY IS PROFESSIONALLY MAINTAINED AND IS FULLY ALIGNED WITH QBLOX EQUIPMENT

Quantify is professionally maintained and constantly being improved by our software team to provide a growing coverage of quantum computing experiments and alignment of Qblox equipment with your quantum application and device.

The open-source licensing also allows the researchers and experimentalists to create and possibly share their specific extensions to the main platform, further advancing the capabilities of Quantify.

By subscribing to the Quantify Gitlab repository there is automatic awareness of the latest releases.

Quantify can run on any host PC which runs python and has been extensively tested with Linux Ubuntu, Mac OS and Windows.

QUANTIFY FOR SEAMLESS INTEGRATION OF QBLOX CONTROL STACKS WITH YOUR QUANTUM APPLICATION