Microsoft Quantum is continuing to advance the global quantum ecosystem by adding cutting-edge features to its compute platform. By developing powerful error-correction codes that are applicable to many types of qubits, we are advancing the field of quantum computing while putting it within reach of experts and nonexperts alike. Microsoft’s novel four-dimensional geometric codes require very few physical qubits per logical qubit, can check for errors in a single shot, and exhibit a 1,000-fold reduction in error rates. Most of today’s quantum computers operate with qubits that are prone to errors and thus are not capable of reliable computation on their own. To realize the promise of complex problem-solving abilities in quantum computers, there are two prerequisites:

1. Use physical qubits with high fidelities.
2. Apply error-correction codes that can create reliable, logical qubits with error rates that are substantially lower than those of the corresponding physical qubits.
   

As demonstrated through our collaborations with multiple hardware partners, Microsoft has state-of-the-art capabilities in error correction. Our qubit-virtualization system, which is a core component of the Microsoft Quantum compute platform, enables the creation and entanglement of reliable logical qubits from high-quality physical qubits. Previously, we created and entangled 24 reliable logical qubits by applying Microsoft’s qubit-virtualization system to Atom Computing’s neutral atoms. In that study, we demonstrated our ability to detect and correct errors—and correct for losses of qubits—during computation, thus enabling reliable and highly accurate quantum computation.

Full report : Microsoft advances quantum error correction with a family of novel four-dimensional codes.