Thinnest silicon-chip wires refuse to go quantum

&#62; It could be bad news, though, for the super-fast quantum computers that are hoped to come next.<p>It doesn't sound like it. It sounds like this is a very special property of phosphorous infused nanometer wide wires. It sounds like if you want quantum effects you could just, you know, not infuse the phosphorous. It's not like quantum theory has been disproven.

Is it bad news when quantum computing has bad news? I'm torn on the subject. There are lots of interesting problems that might be solved or at least drastically sped up by quantum computing, such as optimization problems in engineering. However, security, which we generally deem essential in everyday transactions, depends purely on a lower limit to the time it takes to factor a large prime using known technologies. Similar for other essentials, such as privacy and anonymity. Quantum computing would be good in some ways, but terribly bad in others.