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Tuesday, June 14, 2022

Simulating a Faster Path to Quantum Computing

Impressed by the number of efforts underway regarding quantum ...

Simulating a Faster Path to Quantum  By Tim Hornyak, Commissioned by CACM Staff, June 14, 2022  in ACM

In a bid to accelerate the development of quantum computing applications, supercomputer manufacturer Fujitsu has come up with what it says is the world's fastest 36-qubit quantum simulator.

Quantum simulators attempt to emulate quantum operations on a classical computer. While their speeds are slower than quantum machines, they can serve as a bridge technology before wider implementation of quantum computers, which have limited computing range and can be prone to errors.

The new Fujitsu machine operates on a 64-node PRIMEHPC FX 700 hardware system with the same A64FX processors used in Fugaku, the Fujitsu supercomputer that was knocked off its leading position in late May in the new TOP500 ranking of the world's most powerful supercomputers.

The simulator has a theoretical peak performance of 3.072 teraflops in double-precision floating-point format calculations, and can run the open-source Qulacs quantum circuit simulator software at about twice the speed of other major simulators in 36-qubit operations, according to the company. The machine performs multiple calculations simultaneously using scalable sector extension (SVE) instructions. The SVE specification was incorporated in the A64FX, which Fujitsu developed with Britain's Arm.  .... ' 

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