Quantum computing is the hot topic in atomic physics and optics at the moment. It has gotten to the point where some journals appear to be willing to publish anything that can combine a logic gate and a quantum state, no matter how far fetched the piece might be. Needless to say, I was kind of skeptical when pointed to yet another Nature publication on quantum memory systems.
The paper presents a scheme that preserves quantum states for much longer than the current six millisecond record, allowing them to be stored for up to half a second. Although there are hidden disadvantages to the scheme, it represents an important breakthrough in the field, because the storage time is now longer than the time it takes to perform an individual logic operation.
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