"a consortium of UK researchers has created a suite of metrics that they say is a holistic way to measure the performance of quantum computers. They have published the work alongside a library of open-source software called QCMet. Separately, a group including tech giant IBM and Helsinki-based quantum-software company Algorithmiq launched the Quantum Advantage Tracker last month as a way to compare experiments that purport to show 'quantum advantage' - that is, an efficiency or accuracy better than that of a classical machine."
"Classical computers encode information in bits that can be either 1 or 0. Quantum computers are instead based on quantum bits, or 'qubits', using any system - such as light or tiny superconducting loops - that can be put into a state of being both 1 and 0 at once. Physicists make qubits interact in ways that they hope will allow them to perform certain kinds of calculation much faster than would otherwise be possible."
Progress in quantum computing is difficult to compare because research groups use diverse hardware, algorithms and evaluation metrics, preventing consistent cross-system comparison. A UK consortium released QCMet, an open-source library and suite of holistic performance metrics to standardize measurement of quantum computers. Separately, IBM and Algorithmiq introduced the Quantum Advantage Tracker to evaluate claims of efficiency or accuracy surpassing classical machines. Qubits can be implemented in systems like light or superconducting loops and can exist in superposed states, enabling potential speedups for specific calculations. Scaling to thousands of qubits is possible but operating and maintaining larger machines remains challenging, so data-driven metrics are needed.
Read at Nature
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