Systems Newsletter May 2024
We are happy to announce the release of several new enabling features and examples for H-Series users.
Local H-Series emulators
Now available in pytket-quantinuum is a local version of the H-Series emulator. This emulator is noiseless but can be used for quick development locally and avoids the need to queue your circuits.
The H-Series Emulators knowledge article has been updated to include the local emulator and can be found in the How to Use H-Series Emulators knowledge article on the Quantinuum User Portal under the Examples tab. This article covers the emulators available (cloud vs local instances), simulation techniques (statevector vs stabilizer simulations), and how to submit custom noise parameters to the emulator. Additional information on the local emulator can also be found on the pytket-quantinuum documentation page under Local Emulators.
H-Series queue and availability visualization
Those interested in learning about the H-Series queue and how to optimize their queue time may find a new knowledge article on the H-Series queue helpful. This article covers the H-Series fair queue system, how to minimize queue time, and introduces a new pytket-quantinuum method to query a dynamic view of the H-Series operational calendar.
This knowledge article, Queue Visibility on H-Series, is located on the Quantinuum User Portal under the Examples tab.
Availability of the general SU(4) entangler gate and native gate compilation options
Native gates are gates on a quantum computer that the hardware physically executes. On H-Series hardware users can now select the native two-qubit gate used to execute their circuit. Currently the default is the arbitrary-angle two-qubit gate, Rzz() but the fully entangling two-qubit gate, Rzz, or the general SU(4) entangler gate, Rxxyyzz(,,), can be selected as well. The general SU(4) entangler gate is a new gate that was used in our most recent Quantum Volume demonstrations.
An example of how to use these new features can be found in the Native Gate Compilation Options with H-Series knowledge article on the Quantinuum User Portal under the Examples tab. Additional information can be found on the pytket-quantinuum docs page under Target Two Qubit Gate.
New use case knowledge articles in chemistry, high energy physics & condensed matter physics
The knowledge articles below can be found on the Quantinuum User Portal under the Examples tab. These articles walk through several field specific use cases and their implementation on H-Series hardware.
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Chemically-Aware Unitary Coupled Cluster reviews the work of I. T. Khan et al. and demonstrates a Hamiltonian averaging procedure for a 6-qubit electronic structure chemistry problem on an H-Series device with the chemically-aware unitary coupled cluster ansatz.
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Lattice Gauge Theory reviews the work of S. A. Rahman et al. and outlines the implementation of a SU(2) lattice gauge theory in Minkowski spacetime using quantum computers, showcasing the real-time evolution of excitations across a lattice.
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Topological Order using Measurement and Feedforward implements the mid-circuit measurement and feed-forward strategy found in arXiv 2302.01917 to prepare the ground states of the Wen-plaquette model on a Torus.