Seth Lloyd, "Ultimate physical limits to computation": http://arxiv.org/abs/quant-ph/9908043
"""As an example, quantitative bounds are put to the computational power of an ‘ultimate laptop’ with a mass of one kilogram confined to a volume of one liter. ... The ultimate laptop performs 2mc^2 /π¯h = 5.4258 × 10^50 logical operations per second on ≈ 10^31 bits. Although its computational machinery is in fact in a highly specified physical state with zero entropy, while it performs a computation that uses all its resources of energy and memory space it appears to an outside observer to be in a thermal state at ≈ 10^9 degrees Kelvin. The ultimate laptop looks like a small piece of the Big Bang.""" Order yours today! --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [email protected]
