Good news! Error correction is a key component of quantum computing!
"... The Microsoft Azure Quantum program is built on technological advancements that enable quantum computing to scale. Microsoft announced the notion of topological qubits in March 2022, which are qubits that are theoretically more stable than existing ones without sacrificing size or speed. However, developing a general-purpose quantum computer capable of solving industrial-scale issues will necessitate innovation at all levels of the quantum stack, from nanoscale materials to algorithms and applications. ...
Error correction, which is also utilized in traditional digital computing, is a critical technology for overcoming this fragility. Quantum error correction (QEC) can detect and fix most faults that occur on physical qubits by encoding the state of a single logical qubit into multiple physical qubits. However, depending on the quality of the physical qubits, error correction might raise a computation’s space requirements by a factor of thousands. In addition, its time requirements by more than tenfold. ...
Microsoft researchers have developed a new class of quantum error correction codes known as Floquet codes, well suited to topological qubits. Compared to the prior state of the art, the proposed methodologies result in a tenfold or more reduction in the overhead required for error correction on topological qubits, paving the way for scaling to a million qubits and beyond. ..."
Error correction, which is also utilized in traditional digital computing, is a critical technology for overcoming this fragility. Quantum error correction (QEC) can detect and fix most faults that occur on physical qubits by encoding the state of a single logical qubit into multiple physical qubits. However, depending on the quality of the physical qubits, error correction might raise a computation’s space requirements by a factor of thousands. In addition, its time requirements by more than tenfold. ...
Microsoft researchers have developed a new class of quantum error correction codes known as Floquet codes, well suited to topological qubits. Compared to the prior state of the art, the proposed methodologies result in a tenfold or more reduction in the overhead required for error correction on topological qubits, paving the way for scaling to a million qubits and beyond. ..."
"... Our recent breakthroughs overcome this issue through a conceptually new perspective on quantum codes (put forward in “Dynamically Generated Logical Qubits” and “Boundaries for the Honeycomb code”), where the encoding of the quantum information is not static but rather allowed to periodically evolve in time. Many examples of physical systems are known where such periodic evolution allows new phenomena to occur (see, for example, the well-known Kapitza pendulum). The study of such systems falls under the term Floquet systems, which gives this new class of codes its name. ..."
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