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December 2020 product updates

  • New set of basis gates on our open systems.

The set of basis gates for IBM Quantum® open systems has changed from {u1, u2, u3, cx} to {id, rz, sx, x, cx}. This new basis set will bring us closer to the level of control necessary to get a Quantum Volume of 64 (this requires Qiskit® 0.22 or greater).

  • Visualizations in IBM Quantum Composer now reflect probabilistic instructions.

Add an operation such as a measurement, conditional gate, or a reset to a circuit on IBM Quantum Composer, and the visualizations below the editor will reflect these probabilistic instructions.

Randomness in the visualizations is based on a seed number, which corresponds to a single instance of the statevector simulator. Now you can see the seed number above Quantum Composer --- you can also change that number to set a new seed, and observe any differences in the visualizations of your circuit.

  • New widgets in Quantum Lab!

The new Composer widget in Lab requires no installation. Interact with Quantum Composer from within the Jupyter notebook environment, alongside Qiskit code. Visit Using the Circuit Composer widget(opens in a new tab) in the Quantum Lab docs to learn more.

  • Conditional reset is now on all capable systems!

All systems except ibmq_armonk and ibmq_melbourne are now enabled with conditional reset.

Visit this tutorial in the IBM Quantum Lab docs to learn more:

Conditional Reset on IBM Quantum Systems

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