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An important requirement of quantum error correction is the fast and non-destructive detection of qubits. The declared goal of SNAQC is to develop a novel experimental platform for quantum computing based on neutral atoms and to take a first step towards quantum error correction. Johannes Zeiher and his research team: (f.l.t.r. Johannes Zeiher, Flavien Gyger, Aron Lloyd, Renhao Tao, Maximilian Ammenwerth) From the NISQ architecture to a fault-tolerant regime Nevertheless, the realisation of error-corrected quantum computers remains a mammoth task, since quantum error correction places very specific demands on the architecture of quantum computers. So-called quantum error correction offers an elegant way out of this dilemma: through continuous and controlled measurements, gate errors can already be detected during runtime and subsequently corrected. Quantum computers are currently still very susceptible to these errors.

Excessive gate errors make quantum calculations unreliable, less valid and destroy the intended advantage of quantum computers for solving difficult problems. This approach is being pursued at the MPQ by several groups, including that of Johannes Zeiher.īut regardless of the hardware underlying the quantum processor (superconducting qubits, trapped ions or neutral atoms): the widespread use of quantum computers is currently still prevented by errors in the execution of quantum gates, the elementary computing steps of a quantum computer. One promising approach for the realisation of quantum computers is the construction of processors based on neutral atoms. Johannes Zeiher at the strontium experiment at MPQ, that he and his group have built from scratch over the course of the last year.Įrror-corrected and scalable quantum computers are a key technology of the current "second quantum revolution" and promise great potential for applications in finance, logistics or quantum chemistry.