Quantinuum

Overview

Quantinuum offers access to trapped ion quantum computers and emulators, accessible via their API and User Portal. For the complete set of currently available devices, qubit numbers, etc. see the Quantinuum Systems User Guide under the Examples tab on the Quantinuum User Portal.

This guide describes how to use the system once you have access. For instructions on how to gain access, see our Quantum Access page instead.

Features

The complete set of Quantinuum System Model H1’s hardware specifications and operations, can be found in the Quantinuum System Model H1 Product Data Sheet on the Quantinuum User Portal. Features include, but are not limited to:

  • N ≥ 12 qubit trapped-ion based quantum computer
  • All-to-all connectivity
  • Laser based quantum gates
  • Linear trap Quantum Charge-Coupled Device (QCCD) architecture with three or more parallel gate zones
  • Mid-circuit measurement conditioned circuit branching
  • Qubit reuse after mid-circuit measurement
  • Native gate set: single-qubit rotations, two-qubit ZZ-gates

Connecting

Cloud Access

Users can access information about Quantinuum’s systems, view submitted jobs, look up machine availability, and update job notification preferences on the cloud dashboard on the Quantinuum User Portal.

  • Jupyter at OLCF: Access to the Quantinuum queues can also be obtained via OLCF JupyterHub, a web-based interactive computing environment.

Locally via OpenQASM or pyket

Users are able to submit jobs that run remotely on Quantinuum’s systems from a local python development environment. Directions for setting up the python environment and getting started in a notebook locally as well as additional examples utilizing conditional logic and mid-circuit measurement are found under the Examples tab on the Quantinuum User Portal.

Running Jobs & Queue Policies

Information on submitting jobs to Quantinuum systems, system availability, checking job status, and tracking usage can be found in the Quantinuum Systems User Guide under the Examples tab on the Quantinuum User Portal.

Users have access to the API validator to check program syntax, and to the Quantinuum System Model H1 emulator, which returns actual results back as if users submitted code to the real quantum hardware.

Note

A recommended workflow for running on Quantinuum’s quantum computers is to utilize the syntax checker first, run on the emulator, then run on one of the quantum computers. This is highlighted in the examples.

Allocations & Credit Usage

Running a job on the System Model H1 family of hardware requires Quantinuum Credits. Additional information on credit usage can be found in the Quantinuum Systems User Guide under the Examples tab on the Quantinuum User Portal. Users and groups are initially allocated 500 HQC’s and 2000 eHQC’s at the beginning of each month, but requests for increased allocations should be submitted (with a brief explanation) to help@olcf.ornl.gov and will be reviewed by the QRUC.