The quantum singularity

The quantum singularity: "Quantum computers are computers that exploit the weird properties of matter at extremely small scales. Many experts believe that a full-blown quantum computer could perform calculations that would be hopelessly time consuming on classical computers, but so far, quantum computers have proven devilishly hard to build. The few simple prototypes developed in the lab perform such rudimentary calculations that it’s sometimes difficult to tell whether they’re really harnessing quantum effects at all."