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Quantum computing

Quantum computing

Quantum error correction produces better ‘magic’ states

29 May 2024 Raman Choudhary 
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Error-corrected magic: Clifford circuits attain universality – that is, the ability to compute any function that quantum theory permits – upon injection of special states called magic states. Error-corrected magic states (illustrated conceptually in the above image) facilitate implementation of fault-tolerant logic gates via magic state distillation (MSD) protocols, but these protocols are expected to be quite resource-intensive unless high-fidelity magic states are input into these circuits. In this work, the IBM team used quantum error correction to prepare such high-fidelity magic states. (Courtesy: IBM)
Humans like to build robust systems – ones that resist change and minimize unreliable or undesirab

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Raman Choudhary is a PhD student contributor to Physics World. Raman is studying quantum physics in a joint programme by the universities of Minho, Aveiro and Porto, in Portugal. Find out more about our student contributor networks
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