Well, not something based upon the same principles of human biology. That took billions of years to evolve, and we don't have that kind of time in the laboratory. But the computational theory of mind is making great advances, and our computing technology is increasing exponentially. I don't think it's inconceivable that in the next century or two we will be able to create a computer that replicates the functions of the human brain with more accuracy and efficiency.

Even if the brain were too complex to understand (I don't think it is; its design is actually based on a small number of genes, whose instructions are repeated over and over again to give us a lot of neurons in comparison to our body size, which is where our intelligence comes from), it would not be inconceivable to use computing technology in conjunction with human brains to create cyborg brains that are way more powerful than regular human brains.

Definitely check out Ray Kurzweil on TED Talks. He has a lot of mind-blowing ideas about where our technology is going to be heading us in the near future, based on extrapolating current technological trends.