New strategy helps quantum bits stay on task

Scientists at Florida State University's National High Magnetic Field Laboratory (MagLab) have demonstrated a way to improve the performance of the powerful but persnickety building blocks of quantum computers, called quantum ...

Grant targets quantum computing's error control challenge

A team of researchers led by Duke University and the University of Maryland has been tapped by the nation's "Q Branch" to take quantum computing efforts to the next level using one of the field's leading technologies—ion ...

Scott Aaronson on Google's new quantum-computing paper

In 2010, a Canadian company called D-Wave announced that it had begun production of what it called the world's first commercial quantum computer, which was based on theoretical work done at MIT. Quantum computers promise ...

Upgrading the quantum computer

Theoretical physicists have proposed a scalable quantum computer architecture. The new model, developed by Wolfgang Lechner, Philipp Hauke and Peter Zoller, overcomes fundamental limitations of programmability in current ...

Improved stability of electron spins in qubits

Calculation with electron spins in a quantum computer assumes that the spin states last for a sufficient period of time. Physicists at the University of Basel and the Swiss Nanoscience Institute have now demonstrated that ...

For faster battery charging, try a quantum battery?

(Phys.org)—Physicists have shown that a quantum battery—basically, a quantum system such as a qubit that stores energy in its quantum states—can theoretically be charged at a faster rate than conventional batteries. ...

Controlling interactions between distant qubits

A big part of the burgeoning science of quantum computation is reliably storing and processing information in the form of quantum bits, or qubits. One of the obstacles to this goal is the difficulty of preserving the fragile ...

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