Not All Qubits Are Small

While diamond nitrogen-vacancy centers offer one attractive implementation of quantum qubits, many other systems have been proposed. In theory, at least, any system with clearly identifiable quantum states can serve the purpose. The challenge lies in finding a system in which those states can be manipulated and measured by external forces and can be fabricated in large enough numbers for practi... » read more

Power/Performance Bits: May 20

Visualizing complex electronic states While producing the first detailed visualization — down to the level of individual atoms — of exactly how a material called sodium manganese dioxide that has shown promise for use in electrodes in rechargeable batteries behaves during charging and discharging, a team of researchers led by MIT has explained an exotic molecular state that may help in und... » read more

Power/Performance Bits: Dec. 31

Approximate computing With the potential to double efficiency and reduce energy consumption, Purdue University and NEC Laboratories America researchers are developing computers capable of "approximate computing" to perform calculations good enough for certain tasks that don't require perfect accuracy. The need for approximate computing is driven by a fundamental shift in the nature of compu... » read more