Rahko Reaches Groundbreaking Accuracy on Honeywell’s Latest QPU ‘System Model H0’

At Rahko, we are pushing forward the limits of what is possible with current quantum algorithms

We are excited to present the results from our latest quantum processing unit (‘QPU’) implementation, in a collaboration between Rahko (led by Jules Tilly and Edward Grant), Johnson Matthey (led by Glenn Jones), and Honeywell Quantum Solutions.

The interaction between quantum hardware and quantum software is critical to the pathway to realizing the full potential of quantum computing. Honeywell’s latest QPU offers an optimal set of features, between high gate fidelities and full connectivity, for us to challenge our quantum algorithms on larger problems.” – Jules Tilly, Research Scientist, Rahko.

Using Rahko’s Discriminative Variational Quantum Eigensolver (‘DVQE’), we have reached groundbreaking accuracy on Honeywell’s latest QPU, System Model H0, giving strong early indication of the powerful capability quantum computing will offer for the computation of electronic structure.


The promise of quantum computing for electronic structure computation

Precise and efficient computation of electronic structure has wide-ranging potential for industrial applications. Quantum computing offers strong promise for better accuracy on electronic structure computation, with the potential to unlock significant advances in research and innovation across areas including battery and fuel cell technology, CO2 utilisation, catalysts for clean air and efficient use of natural resources.” – Glenn Jones, Physical and Chemical Modelling Research Manager, Johnson Matthey

Examples of particularly promising application areas include photo-electrochemical reduction of CO2, low-T ammonia synthesis, and enhanced understanding of enzyme function in photosynthesis.


Honeywell’s System Model H0 QPU

The Honeywell System Model H0 offers a 6-qubit quantum register with outstanding gate fidelities, achieving a total quantum volume of 64, which puts it among the forefront of QPUs of its generation.

With the benefit of the device’s low error rates and a fully connected set of qubits, Rahko has used its DVQE method (a fully variational method) to reach groundbreaking accuracy in the first excited state of a 4-qubit molecule on Honeywell’s System Model H0. The DVQE method was combined with light-touch error mitigation techniques that are able to further improve results on near-term QPUs. 

We strive to provide the very best quantum tools for developing innovative algorithms. We are pleased to see how Rahko has been able to leverage our high-fidelity, fully-connected qubits to push the boundaries of DVQE methods, on a path to providing valuable solutions.” – Tony Uttley, President Honeywell Quantum Solutions 

Honeywell’s System Model H0 is now available for access remotely via the Honeywell API.