“[The company D-Wave] makes a new type of computer called a quantum computer that’s so radical and strange, people are still trying to figure out what it’s for and how to use it…. The supercooled niobium chip at the heart of the D-Wave Two has 512 qubits and therefore could in theory perform 2^512 operations simultaneously. That’s more calculations than there are atoms in the universe, by many orders of magnitude…. Naturally, a lot of people want one. This is the age of Big Data, and we’re burying ourselves in information—search queries, genomes, credit-card purchases, phone records, retail transactions, social...