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But can I buy your Magic Bus?

Posted 20 Oct 2012 at 15:40 UTC by steve

One of the hurdles faced in the construction of a quantum computer is how to move qubits around inside. According to an NIST news release, NIST's Joint Quantum Institute joined forces with researchers at Princenton to solve this problem by creating a "quantum bus". Physicist Jacob Taylor explains the problem this way:

"In order to couple qubits, we need to be able to move information about one to the other. There are a few ways that this can be done and they usually involve moving around the particles themselves, which is very difficult to do quickly without destabilizing their spins - which are carrying the information - or transferring information about the spins to light. While this is easier than moving the particles themselves, the interaction between light and matter is generally very weak."

Their solution uses the latter method. First, they combined spin-orbit qubits with circuit quantum electrodynamics. The resulting device couples the spins of electrons trapped in an indium-arsenide quantum dot with the electron's positions. This allows the magnetic field of the qubit (which now reflects the spins), to interact with microwave photons moving in a superconducting cavity. In effect, they've got half of a bus - the spin information is moved from the qubit to a photon. So you can't buy that quantum brain for your robot just yet. They still need to get the spin information from the photon into another qubit at the other end of the bus. For a more detailed explanation of the work, with schematics and links to papers, see the JQI news release. A Princeton news release also mentions the work.

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Random Robot Roundup

Posted 19 Oct 2012 at 18:13 UTC by steve

Let's start off this week's news roundup by welcoming two new robot websites: first is Robotics.gd, which will include forums, chat, and photo galleries. Next up is Robohub, a robot news site where you'll see some familiar faces from here on robots.net and the robots podcast. We're always happy to see new robot sites and look forward to collaborating! In other news, Wendy Hughson of Intellibot Robotics wrote to let us know about a donation of two robots they made recently to the Upper Merion School District in Pennsylvania. The robots will be used in the STEM program by students at the Upper Merion Middle School. Tim Smith writes, "Just wanted to share some news from the Open Source Robotics Foundation, the spin-off from personal robotics company Willow Garage. Two recent OSRF blog posts have covered their relationship with DARPA and the Disaster Robotics Challenge, as well as the fact that Toyota's Human Support Robot (HSR) will be running on ROS." Finally Aldebaran Robotics sent an announcement saying their URBI robot operating system suite is now being distributed as free software under the BSD license. Know any other robot news, gossip, or amazing facts we should report? Send 'em our way please. And don't forget to follow us on twitter and Facebook. Now you can add us to your Google+ circles too.

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Military Robotics

Global Hawk Closer to Autonomous Refueling

Posted 18 Oct 2012 at 16:34 UTC by steve

DARPA's Autonomous High-Altitude Refueling (AHR) program hopes to bring autonomous refueling to the Global Hawk and other flying robots. A recent DARPA news release says the AHR program has completed a test flight that brings their goal one step closer. During the test, two Global Hawks flew within 100 feet or less of each other for 2.5 hours at 44,800 feet. The aircraft were fitted with a refueling probe and a receiver drogue, which were brought into the correct orientation to connect but were not actually connected during this test flight. According to Jim McCormick of DARPA:

"The goal of this demonstration was to create the expectation that future HALE aircraft will be refueled in flight. Such designs should be more affordable to own and operate across a range of mission profiles than systems built to satisfy the most stressing case without refueling. The lessons from AHR certainly extend beyond the HALE flight regime, and insights into non-traditional tanker concepts may offer further operational advantages."

Read on for two videos showing the Global Hawks during one of the approach maneuvers from the point of view of each UAV.

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Aquatic Robotics

Platypus Cooperative Robotic Watercraft

Posted 17 Oct 2012 at 18:27 UTC by steve

Platypus, LLC is a company spun off from CMU's Robotics Institute this year. Their product is an autonomous robot airboat that can be deployed into bodies of water for environmental monitoring, flood response, fish farming, and other applications. The robot itself is made from a polyurethane hull with three primary components mounted on the deck: an electric propulsion fan, a watertight electronics enclosure, and an enclosure for a smartphone. The robot has a variety of water quality sensors that measure dissolved oxygen, temperature, conductivity, and pH. The sensors are monitored by an Arduino. Water samples can be collected as well. The smartphone relays the telemetry and video through 3G or WiFi and can receive instructions from an operator. For more, see a recent Pittsburgh Business Times story on Platypus as well as the CMU Robotics Institute news release. Read more for additional photos and video of the CRW in action.

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Researchers Map Vision in Human Brain

Posted 16 Oct 2012 at 03:27 UTC (updated 16 Oct 2012 at 18:01 UTC) by steve

A University of Pennsylvania news release describes what may be a major breakthough in our understanding of human vision. Scientists at the Perelman School of Medicine have discovered a mathematical description common across all people that maps visual function to brain anatomy. Geoffrey Aguirre notes:

"By measuring brain anatomy and applying an algorithm, we can now accurately predict how the visual world for an individual should be arranged on the surface of the brain. We are already using this advance to study how vision loss changes the organization of the brain."

The researchers used fMRI to measure brain activity of multiple people, identifying the precise relationship between brain folds and visual representation. The general schematic for this relationship was discovered in 1918 by neurologist Gordon Holmes, who reverse-engineered it by mapping blind spots caused by war injuries to patient's brains. The map will be very useful in designing brain-machine interfaces for a visual prosthesis or other applications. It may also offer new insights applicable to machine vision for robots. The full details are currently pay-walled in the paper The retinotopic organization of striate cortex is well predicted by surface topology. However, a nice summary may be found online with the raw data which you can download and run in FreeSurfer, a free software application used for analysis and visualization of brain imaging data.

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2012 ASABE Robot Contest Photos

Posted 10 Oct 2012 at 19:09 UTC by steve

I was able to attend the 2012 robot competition of the American Society of Agricultural & Biological Engineers (ASABE) recently. When did agricultural engineering students start studying robots? Just as students in any field need to know about computers, it seems robots too are becoming ubiquitous. This year's contest was designed to encourage students to think about ways robots could solve agricultural problems such as optimizing distribution of feed in cattle lots. Read on for photos and more info about the contest.

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NimbRo-OP Robot: Open Source Hardware/Software

Posted 9 Oct 2012 at 18:23 UTC by steve

Michael Schreiber of the Institute for Computer Science at the Universit├Ąt Bonn sent us some information on their latest robot, NimbRo-OP. The small, humanoid robot is based on a completely open platform with both the hardware and software released under free and open licenses. NimbRo-OP is 95 cm tall (37.4 inches), uses 20 Robotis Dynamixel servos, has a dual-core AMD processor, WiFi, video camera, 3-axis accelerometer, and 3-axis gyro. The initial GNU/Linux software is based on DARwin-OP. Michael says there is ongoing development of software based on ROS. The robot is size-compatible with the RoboCup Humanoid League's TeenSize class. The goal was to get a very simple, working design out as open source so that other groups can start using and improving it. Read on to see a couple of videos of NimbRo-OP in action.

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Robots Podcast #114: Rodney Brooks of Rethink Robotics

Posted 8 Oct 2012 at 02:36 UTC by John_RobotsPodcast

portrait photo of Rodney Brooks

In episode #114 Robots Podcast speaks with Rodney Brooks at the offices of Rethink Robotics, discussing the motivation behind his getting into robots for manufacturing, Rethink's safe, interactive approach, how low-cost drove their design decisions, and how it all came together in their first product, Baxter.

Read On | Tune In | Transcript

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Random Robot Roundup

Posted 1 Oct 2012 at 20:53 UTC by steve

Patrick Goebel wrote to let us know about his new book called ROS by Example that's available through Lulu in paperback or PDF format. If you're new to ROS, you might also be interested that NooTrix has set up a VirtualBox virtual machine with ROS to simplify getting it running on your GNU/Linux box. We have news of two new crowd-funded robot projects out there: Robert Oschler has started an Indiegogo campaign to fund his Brain Control Interface (BCI) toolkit, open source robot control software that uses the Emotiv 14-electrode consumer EEG headset; also Jose Quinones of the Dallas Personal Robotics Group is running a Kickstarter campaign to fund his CNC Mother Board project that provides inexpensive, general purpose hardware for controlling CNC machines. Finally, Patrick Gleeson wrote to let us know about his Robot Circus, an animatronic/puppet show he's developed. What's it about? "in a junk-punk, post-apocalyptic future an incorrigible showman and a boy genius build robotic animals from trash and make them the stars of a travelling circus". Know any other robot news, gossip, or amazing facts we should report? Send 'em our way please. And don't forget to follow us on twitter and Facebook.

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Microlecture - How to Engineer a Dog

Posted 28 Sep 2012 at 05:21 UTC by John_RobotsPodcast

This video originally appeared in an article by Markus Waibel in the Learn section of Robohub.org, and is the first in what is anticipated to be a series of such microlectures.

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