When quantum computers eventually reach larger scales, they'll probably remain pretty precious resources, locked away in research institutions just like our classical supercomputers. So anyone who wants to perform quantum calculations will likely have to do it in the cloud, remotely accessing a quantum server somewhere else.
In this week's The New Yorker, Joshua Davis writes a damn fine real-life mystery: who is "Satoshi Nakamoto," the creator of bitcoin, a digital currency created in the wake of the economic collapse that has been variously described as "anarchic," a "scam," and the "evolution of money"? Davis settles on a suspect, but today, Adam Penenberg over at Fast Company suggests Davis may have found the wrong man.
It’s an innovation fit for a Cold War spy novel: a means to transmit secret messages via microbe. Dubbed steganography by printed arrays of microbes (yup: SPAM), the technique involves encoding messages in the colors of glowing bacteria, which can be later unlocked with antibiotics.
There's a race brewing between Chinese and American researchers, but this one has no weapons or spheres of influence or even space -- though it does involve lasers. It's a race to generate the most random numbers the fastest, and by tapping the quantum noise in a laser beam the Chinese just took the lead, turning out 300 megabits of random numerals per second to break a U.S. record that stood for only a matter of days.
Randomness can be confusing and often misleading, but it can also be extremely useful. Cryptographers seeking to generate unbreakable codes, for instance, love randomness.
Computer scientist David Chaum suggests that cryptography could solve e-voting security woes in the future, and
many experts agree. Here’s how Chaum’s system works.
By Michael MoyerPosted 11.13.2004 at 3:00 pm 0 Comments
1. When you go into the voting booth, you’re presented with an ATM-like screen that lists the candidates. Choose one by tapping that person’s name. A message confirming your choice appears at the top of
2. This confirmation is actually two paper receipts, pressed together and then illuminated from behind. Each receipt by itself is an unreadable grid, but when properly aligned, the name you have chosen appears.