US scientists, armed with nothing more complicated than a pair of tweezers, have built a working radio receiver from a sheet of graphene.The engineering significance of the finding lies in the fact that the set up does not suffer from parasitic capacitance, the bane of the lives of electrical engineers once the components get small enough, and close enough together.
Qubits and Pieces
News from the frontline of the weird and wonderful world of quantum computing. From the theoretical musings of solid state physicists to breakthroughs you might actually see in a data centre in your lifetime, we'll be keeping an eye on stuff that matters in materials science, including graphene, condensed matter, diamonds and so on. And last, but by no mean least, we'll be tracking the spin on spintronics. Just don't mention room temperature.
Lucy Sherriff is a journalist, science geek and general liker of all things techie and clever. In a previous life she put her physics degree to moderately good use by writing about science for that other tech website, The Register. After a bit of a break, it seemed like a good time to start blogging about weird quantum stuff for ZDNet. And so here we are.
Spintronics researchers from University College London, the University of Utah and Florida State University report a record-breaking data storage time of 112 seconds. The interesting bit is that they stored the data on the spin state of silicon nuclei, not electrons.
Researchers in Spain and Columbia have shown that quantum entanglement may be possible at much higher temperatures than anyone thought. The trick, according to the work published in Physical Review, Letters, is to set up a system without thermal equilibrium – that is to say, some bits need to be hotter than others.
California-based firm Shrink Nanotechnologies has signed a multi-year license for the University of Chicago’s so-called electronic glue. The deal covers all but thermo-electric applications of the glue, which has the potential to bring down the cost of many semiconductor devices including computer chips and solar cells.
A recently proposed physical attack on a quantum cryptography system has been comprehensively rejected by researchers at Toshiba in Cambridge, who say that as long as the kit is all operating correctly, the so-called 'blinding' attack will not work.
More evidence that the quantum and macro worlds are very different places comes from researchers who have been sending entangled photons around the Canary Islands.This is important because it means scientists are probably right about the way quantum entanglement works, which matters enormously if quantum cryptography is to become a viable and useful tool.
A paper thin cell phone with a battery life to rival the biggest brick on the market today? New research from a US-China collaboration suggests that in this case the sci might soon be dropping the fi.
Caltech researchers have demonstrated a four-way quantum memory, successfully entangling the spins of four caesium atoms stored close to absolute zero in a magnetic grid. They succeeded in storing information, and reading it out again.
Scientists have brought industrial production of graphene a step closer with the discovery that the chicken wire structured material can be made in a single step from the simplest of ingredients: sugar.Led by Professor James Tour, Rice's T.
Researchers in Denmark have managed to store the states of two entangled light beams in a solid state memory.In an optical quantum network, relay stations will be needed to guard against the odd data photon getting lost along the way.