Error correction

The same codes needed to thwart errors in quantum computers may also give the fabric of space-time its intrinsic robustness.

The mathematician Gil Kalai believes that quantum computers can't possibly work, even in principle.

To avoid garbled messages, mathematicians might translate them into geometric form.

A quantum computing pioneer explains why the near future of quantum computation may lie in simulators, not general-purpose quantum machines.

Improvements in how densely spheres and other shapes can be packed together could lead to advances in materials science, deep space communication and theoretical physics.