FILE - In this July 16, 2013, file photo, an IBM logo is displayed in Berlin, Vt. IBM Corp. reports financial results Tuesday, April 18, 2017. (AP Photo/Toby Talbot, File)IBM has been offering quantum computing as a cloud service since last year when it came out with a 5 qubit version of the advanced computers. Today, the company announced that it's releasing 20-qubit quantum computers, quite a leap in just 18 months. A qubit is a single unit of quantum information.