Frontier Physics - Quantum computing
D-Wave, the small company that sells the world’s only commercial quantum computer, has just signed up Google, NASA and the non-profit Universities Space Research Association.
The superconducting chip D-Wave Two uses quantum bits (or qubits) rather than normal bits for its processing. Qubits can simultaneously be in state 1 and 0 at the same time. With multiple qubits, certain problems (like factorisation of large numbers) can be solved in a fraction of the time taken by a conventional computer. This has implications for crypotography and could lead to very fast code cracking.
This Nature article explains more.