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Creating Condensates for Quantum Computer Clusters

Category: Science & Technology
Posted: April 15, 2013 07:45AM
Author: Guest_Jim_*

Just about any new computer you can purchase today, and even some smartphones, contain multicore processors, which deliver high performance without a necessarily high clock speed and associated thermal load. Though not exactly thermal load, researchers developing quantum computers foresee problems with ultra-fast designs because these more complex designs are more susceptible to destructive decoherence. An alternative design paradigm is to utilize multiple, simpler quantum computers analogous to multiple cores in modern computers, and researchers at the Georgia Institute of Technology have recently studied one means of connecting these cores.

Communication is key within quantum computers as the information stored by qubits is so easily destroyed. One way to preserve this information as it travels from one quantum processor to another is to have it travel through a Bose-Einstein Condensate. These condensates are very special materials which behave as though they are a single particle, despite being made up of millions, and this makes it quite resilient to decoherence.

What the researchers did was trigger a phase transition within a condensate and measure how long it takes for the change to ripple through the entire material. The time it takes determines how quickly information could possibly travel between two quantum processors within a quantum computer processor, if they were connected by a condensate.

Source: Georgia Institute of Technology



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