Headway Towards Quantum Information Transfer Via Nanomechanical Coupling - Polidicks

[url]http://www.sciencedaily.com/releases/2013/09/130923143730.htm[/url] [IMG]http://images.sciencedaily.com/2013/09/130923143730.jpg[/IMG] [QUOTE][B]Fiber optics has made communication faster than ever, but the next step involves a quantum leap -- literally. In order to improve the security of the transfer of information, scientists are working on how to translate electrical quantum states to optical quantum states in a way that would enable ultrafast, quantum-encrypted communications.[/B] Today's high-speed Internet converts electrical signals to light and sends it through optical fibers, but accomplishing this with quantum information is one of the great challenges in quantum physics. If realized, this would enable secure communication and even quantum teleportation, a process by which quantum information can be transmitted from one location to another. "There's this big effort going on in science now to construct computers and networks that work on the principles of quantum physics," says lead author Jörg Bochmann, a postdoctoral scholar in UCSB's Department of Physics. "And we have found that there actually is a way to translate electrical quantum states to optical quantum states." The new paper outlines the concept and presents a prototype device, which uses an optomechanical crystal implemented in a piezoelectric material in a way that is compatible with superconducting qubits, quantum analogs of classical bits. Operating the device at the single phonon limit, the scientists were able generate coherent interactions between electrical signals, very high frequency mechanical vibrations, and optical signals. Although the first prototype of the transducer has not been operated in the quantum realm, that is, in fact, the next step for the research effort. "In this paper, we're characterizing the system using classical electrical and optical signals and find that the essential parameters look very promising," says Bochmann. "In the next step, we would have to actually input quantum signals from the electrical side and then check whether the quantum properties are preserved in the light." According to the authors, their prototype transducer is fully compatible with superconducting quantum circuits and is well suited for cryogenic operation. "The coupled dynamics of the system should be the same at low temperatures as in our room temperature measurements, albeit with a lower thermal background," said co-author Andrew Cleland, a professor of physics and associate director of the California Nanosystems Institute at UCSB. "Genuine quantum features and non-classical mechanical states will emerge when we couple a superconducting qubit to the transducer. "We believe that combining optomechanics with superconducting quantum devices will enable a new generation of on-chip quantum devices with unique capabilities, as well as opening an exciting pathway for realizing entangled networks of electronic and photonic quantum systems," Cleland said.[/QUOTE]

ok

Wish I'd stuck at science at school.

Y'know, sometimes I wonder if these sort of articles are just selected and posted at random. Informative nevertheless.

I understand all of this.

i cant wait for all this scifi bullshit

So ill finally have a damn good connection.

Next thing you know we all feel old because we can't make sense of any of this quantum computer mumbo-jumbo but all the new generations can.

[QUOTE=HellSoldier;42318016]Next thing you know we all feel old because we can't make sense of any of this quantum computer mumbo-jumbo but all the new generations can.[/QUOTE] Which is why we're developing a thinking cap!

TL;DR for those who couldn't get it: Fiber Optics with this sort of Quantum information being piped through it will render information easily traceable if it's been tampered, viewed with. The basic rule of quantum mechanics is, the state changes once you view it, so if someone tried to intercept said data, the break/difference in the quantum information stream can be traced to its point of intercept.

It seems like every week there's a few more articles on advances in quantum computing. Are we really making progress that fast or is it just that all the research started years ago and is just now coming to a conclusion?