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Researchers have developed quantum circuits that simulate polymerization kinetics using logarithmic scaling of qubits, significantly reducing the computational resources needed compared to classical methods. This breakthrough enables accurate modeling of complex copolymer microstructures with gate counts feasible for near-future fault-tolerant hardware. The work represents a concrete step toward leveraging quantum advantage in chemistry and materials science.
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Researchers Simulate Polymers Using up to 1000 Qubits

Quantum Zeitgeist3 min de cititArticolul și perspectiva sunt în engleză.

Representing complex chemical reactions typically demands ever increasing computational power as detail increases. However, new circuits achieve an exponential reduction in required memory, scaling logarithmically with system size rather than linearly. This advance unlocks simulations requiring only approximately ten thousand to one hundred thousand gate operations at one thousand system qubits.

Computational cost during the simulation of polymerisation kinetics increases exponentially with chain length when analysing copolymers. Quantum computing offers a possible solution by embedding non-unitary rate matrices into unitary quantum circuits via block encoding. Explicit block-encoding circuits have been built for two kinetic models of living polymerisation. Model A, which simulates single-monomer polymerisation, encodes utilising both a…

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