September 26, 2022

Quantum simulation with up to 61 qubits using data compression

Researchers at the University of Chicago and Argonne National Laboratory significantly have used data compression techniques to fit a 61-qubit simulation of Grover’s quantum search algorithm on a large supercomputer with 0.4 percent error. Other quantum algorithms were also simulated with substantially more qubits and quantum gates than previous efforts.

Today’s practical full-state simulation limit is 48 qubits, because given n qubits, 2n amplitudes are needed to describe the quantum system.

The simulation was performed on the Theta supercomputer at Argonne National Laboratory. Theta consists of 4,392 nodes, each node containing a 64-core Intel Xeon PhiTM processor 7230 with 16 gigabytes of high-bandwidth in-package memory (MCDRAM) and 192 GB of DDR4 RAM. (University of Chicago/

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