Quantinuum Records Highest Ever Quantum Volume in a boost for the industry

Quantinuum Records Highest Ever Quantum Volume In A Boost For The Industry

Quantinuum, a global leader in quantum computing technology, has announced three milestones representing actionable acceleration for the quantum computing ecosystem. Quantinuum’s president, Tony Uttley, made the announcement during his keynote address titled “A Measured Approach to Quantum Computing” in the recently concluded IEEE Quantum Week.

Quantum Volume achievements 

  • New arbitrary angle gate capabilities on the H-series hardware.
  • Another Quantum Volume record for the System Model H1 hardware. 
  • Over 500,000 downloads of Quantinuum’s open-sourced TKET. 

This year has seen two new records for quantum volume on Quantinuum’s trapped-ion quantum computing platform, the System Model H1 Powered by Honeywell. The most recent quantum volume measurement of 8192 is particularly significant.

Quantinuum Records Highest Ever Quantum Volume In A Boost For The Industry

“Quantinuum is accelerating quantum computing’s impact to the world,” “We are making significant progress with both our hardware and software, in addition to building a community of developers who are using our TKET SDK.”


The ability to directly execute arbitrary angle two-qubit gates was critical in reaching this current record. Quantinuum’s innovative method provides more efficient circuit building and greater fidelity outcomes in many quantum circuits.

“This new capability allows for several user advantages. In many cases, this includes shorter interactions with the qubits, which lowers the error rate. This allows our customers to run long computations with less noise,”

Dr. Brian Neyenhuis, Director of Commercial Operations at Quantinuum.

According to Dr. Jenni Strabley, Senior Director of Offering Management at Quantinuum, this new gate design provides a third option for Quantinuum to increase the efficiency of the H1 generation.

Presently, researchers can do single qubit gates (rotations on a single qubit) or completely entangling two-qubit gates. Any quantum operation may be constructed using only those basic components. 

With this discovery, scientists can now use a partially entangling two-qubit gate with arbitrary angle gates instead of a completely entangling two-qubit gate. According to Neyenhuis, there are alternative algorithms where this arbitrary angle two-qubit gate is the natural building block. The quantum Fourier transform is one example. Using arbitrary angle two-qubit gates reduces the number of two-qubit gates (and hence the overall error) by half, significantly enhancing the circuit’s fidelity. 

Researchers can use this new gate to execute tougher tasks that previously resulted in catastrophic mistakes. They would be most useful to researchers studying machine learning, variational, and temporal evolution algorithms. This development is significant for modeling other quantum systems’ behavior.

Quantum Volume, what it means and its history

Quantum volume, a benchmark created by IBM in 2019, is a metric widely employed in the industry for measuring the performance of a quantum computer employing randomized circuits.

Quantum volume tests necessitate the execution of arbitrary circuits. The qubits are randomly coupled, and a sophisticated two-qubit operation is conducted at each slice of the quantum volume circuit. The arbitrary angle two-qubit gate may be used to build this SU(4) gate more efficiently, decreasing the error at each stage of the process.

The H1-quantum 1’s volume of 8192 is partly due to the development of arbitrary angle gates and continuous error rate reduction. The recent quantum volume growth in Quantinuum occurred in April when the System Model H1-2 quadrupled its performance to become the first commercial quantum computer to reach Quantum Volume 4096. 

The System Model H1-1 passed the quantum volume 8192 benchmark with flying colors, producing hefty results 69.33% of the time and above the 2/3 barrier with a 95% confidence interval lower bound of 68.38%.

This is the seventh time in two years that Quantinuum’s H-Series technology has established an industry record for measured quantum volume, as the company continues to meet its 10-fold yearly improvement objective.

TKET: Programming a Quantum Computer

TKET is a sophisticated software development kit that allows you to write and run programs on gate-based quantum computers. It has been an open source language for about a year. TKET allows developers to improve their quantum algorithms, decreasing the computing resources needed in the NISQ era. Over 500,000 TKET packages have been downloaded.

TKET is open source and can be accessed via the PyTKET Python module. The SDK is also compatible with important quantum software platforms such as Qiskit, Cirq, and Q#

This availability and TKET’s portability across numerous quantum computers are crucial for developing a community of quantum algorithm creators. Many corporations and academic organizations account for numerous users in the number of downloads. The arbitrary angle two-qubit gates and other recent Quantinuum advances are all built into TKET.