Latest Research on Quantum Computing

Posted by Hemos on Monday April 5, 2004 @02:44AM from the and-the-up-quark-returns-a-0 dept.

zeristor writes "The The Economist is running a story about the latest progress in Quantum computing. It seems that what has been glossed over in Physics as a minor detail, the decoherence of the superposition of states, is actually quite fundamental to Quantum computing. The decoherence can be measured by something called the Loschmidt echo (is this esoteric or am I just thick? This sounds like a bad episode of Star Trek.) Also goes on to explain how entanglement can be prolonged. All in all very interesting developments."

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Advanced Craps cheating by junkmail · 2004-04-05 04:22 · Score: 4, Interesting

Ok, lets consider two dice to be our collections of qubits. They can each hold the superposition of the numbers 1 - 6. Shaking and throwing the dice cause the superposition of the values and decoherence happens when they come to rest.

The question is, what do we use as 'bang-bang' pulses in order to keep the dice from decohering until we can coerce them into making our point?

1. ???
2. Go shoot craps
3. Profit!