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Fujitsu quantum simulator assesses vulnerability of RSA cryptosystem to potential quantum computer cryptography threat

TOKYO, Jan 23, 2023 - (JCN Newswire via SEAPRWire.com) - As concerns mount surrounding the potential threat posed by quantum computing to existing cryptographic methods, Fujitsu today revealed that it conducted successful trials to evaluate the widely-used RSA cryptosystem (1) for possible vulnerability to code-cracking by quantum computers.Fujitsu conducted the trials in January 2023 using its 39-qubit quantum simulator to assess how difficult it would be for quantum computers to crack existing RSA cryptography, using a Shor's algorithm (2) to determine the resources necessary to perform such a task. Fujitsu researchers discovered that a fault-tolerant quantum computer (3) with a scale of approximately 10,000 qubits and 2.23 trillion quantum gates would be required to crack RSA -- well beyond the capabilities of even the most advanced quantum computers in the world today. Researchers further estimated that it would be necessary to conduct fault-tolerant quantum computation for about 104 days to successfully crack RSA .While the research reveals that the limitations of present quantum computing technology preclude the possibility of this threat in the short term, Fujitsu will conti...

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Fujitsu Achieves Major Technical Milestone with World’s Fastest 36 Qubit Quantum Simulator

TOKYO, Mar 30, 2022 - (JCN Newswire via SEAPRWire.com) - Fujitsu has successfully developed the world's fastest quantum computer simulator capable of handling 36 qubit quantum circuits on a cluster system featuring Fujitsu's "FUJITSU Supercomputer PRIMEHPC FX 700" ("PRIMEHPC FX 700")(1), which is equipped with the same A64FX CPU(2) that powers the world's fastest supercomputer, Fugaku.The newly developed quantum simulator can execute the quantum simulator software "Qulacs"(3) in parallel at high speed, achieving approximately double the performance of other significant quantum simulators(4) in 36 qubit quantum operations. Fujitsu's new quantum simulator will serve as an important bridge towards the development of quantum computing applications that are expected to be put to practical use in the years ahead.Based on this breakthrough, from April 1, 2022, Fujitsu and Fujifilm Corporation(5) (hereinafter Fujifilm) will start joint research on quantum computing applications in the field of materials science.Moving forward, Fujitsu will accelerate its efforts to develop quantum computers with the aim of developing a 40 qubit simulator by September 2022 and conduct joint research and dev...