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R_Colin_Johnson
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re: MEMS shown to enable quantum computing
R_Colin_Johnson   12/13/2010 5:20:13 PM
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I agree--that picture does look a lot like HAL. The line between preposterous science fiction and realizable technologies is so blurred that its increasingly hard to tell the nuts from the geniuses anymore!

R_Colin_Johnson
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re: MEMS shown to enable quantum computing
R_Colin_Johnson   12/12/2010 7:02:31 PM
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I keep remembering the transparent storage media in the movie 2001--remember when Dave was unscrewing them and they popped out looking like bars of glass. How else would the memory in those bars be accessed if not by high-precision laser targeting? I think many of us guessed that MEMS micro-mirrors would be the enabler for storing qubits on atoms in a transparent medium, but Duke and Univ. of Wisconsin were the first to prove the concept.

goafrit
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re: MEMS shown to enable quantum computing
goafrit   12/12/2010 1:42:53 AM
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MEMS will play major roles in the future. That is surely a certainty. It is already happening.

R_Colin_Johnson
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re: MEMS shown to enable quantum computing
R_Colin_Johnson   12/11/2010 12:07:28 AM
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MEMS micro-mirrors are already used for optical switching by companies like Glimmerglass Networks and Micralyne, but those devices do not have the speed or accuracy necessary to create a quantum computer. The Duke and the University of Wisconsin demonstration, however, shows that MEMS is up to the task of targeting individual atoms, albeit it will be a long time--at least a decade--before we see this dream fully realized.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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