Category Archives: qubit

IBM makes 20 qubit quantum computing machine available as a cloud service

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 IBM has been offering quantum computing as a cloud service since last year when it came out with a 5 qubit version of the advanced computers. Today, the company announced that it’s releasing 20-qubit quantum computers, quite a leap in just 18 months. A qubit is a single unit of quantum information. The company also announced that IBM researchers had successfully built a 50 qubit… Read More Continue reading IBM makes 20 qubit quantum computing machine available as a cloud service→

SHA-256 and SHA3-256 Are Safe For the Foreseeable Future

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Hashing, it’s always a contentious issue – used to be md5, then sha-1, then bcrypt and now it looks like SHA-256 or SHA3-256 might the future with quantum science boffins predicting it’s not feasable to crack. You can read more about the algorithm and design (using sponge construction) on Wikipedia here: SHA-3 While it’s reasonable […]

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Ion Trap Makes Programmable Quantum Computer

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The Joint Quantum Institute published a recent paper detailing a quantum computer constructed with five qubits formed from trapped ions. The novel architecture allows the computer to accept programs for multiple algorithms.

Quantum computers make use of qubits and trapped ions–ions confined with an electromagnetic field–are one way to create them. In particular, a linear radio frequency trap and laser cooling traps five ytterbium ions with a separation of about 5 microns. To entangle the qubits, the device uses 50 to 100 laser pulses on individual or pairs of ions. The pulse shape determines the actual function performed, which is …read more

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