German researchers push for spintronic readout
August 17, 2012 // Nick Flaherty
Researchers in Germany have read out the quantum state of an atom directly by using electrodes for the first time, a key step to building quantum computers using spintronics.
“Normally, every contact with the outer world changes information in a quantum mechanical system in a completely uncontrolled manner,” said Professor Mario Ruben from the Karlsruhe Institute of Technology (KIT) who was working with partners from Grenoble and Strasbourg. “We therefore have to keep the quantum state stable and shielded. On the other hand, information has to be read out in a controlled manner for further use.”
Magnetic molecule complexes may be a solution of this dilemma. In their center, a metal atom with a pronounced magnetic moment, a spin, is located. It is surrounded by organic molecules that shield the atom. “When synthesizing this protective enclosure, we can exactly define how much the metal atom sees of the outer world,” said Ruben the
The study is based on the metal atom terbium that was provided with an enclosure of about 100 carbon, nitrogen, and water atoms and then placed in the center of nanometer-sized, electric gold contacts. Due to the properties of the molecule, the electrodes had an effect similar to the three channels of a transistor. Electric voltage of the middle gate electrode influenced the current through the other two electrodes. In this way, the working point was set. Then, the molecule was exposed to various changing magnetic fields and the jump of the spin was reflected by the amplitude of the current curve. “By measuring current flow, we found that the nuclear spin of the metal atom is stable for up to 20 seconds,” says Ruben. “For quantum mechanical processes, this is a very long time.”
Ruben is sure that “the results will be of particular importance to spintronics and quantum computing.” Spintronics uses the magnetic spin of single particles for information processing, combining spin and electronics. Quantum computers use quantum mechanical effects, such as the entanglement and super-position of spins, for the parallel execution of algorithms at high speed.
Advanced batteries reached $10.8bn in market value in 2012, reports Navigant Research
December 05, 2013
Worldwide sales of advanced batteries totaled $10.8 billion in 2012 which is an increase over 2011 reports market intelligence ...
Composite human-computer interface allows multiple devices to share and coordinate their interactions
Sony eyes Renesas fab for sensors
Transphorm acquires Fujitsu's GaN power conversion business
Image sensors manufacturer CMOSIS to be acquired by TA Associates
AMETEK acquires power management systems provider Powervar
December 05, 2013
AMETEK, Inc. has acquired Powervar, a leading provider of power management systems and uninterruptible power supply (UPS) ...
Volvo starts large test with robot cars on public roads
Gartner: Qualcomm, Micron rise in 2013 chip market
Connected Lighting Alliance focuses on shaping indoor professional lighting standards
- 3mm × 3mm QFN IC Directly Monitors 0V to 80V Supplies
- UltraCMOS® Semiconductor Technology Platforms: A Rapid Advancement of Process & Manufacturing
- Adaptive Cell Converter Topology Enables Constant Efficiency in PFC Applications
- Isolated 4-Channel, Thermocouple/RTD Temperature Measurement System with 0.5°C Accuracy
InterviewPerformance monitoring solution helps provide intelligent control of high power systems
A performance monitoring solution designed to enable companies to monitor high power IGBT module systems in locomotive, wind turbine, High Voltage DC and industrial drive applications was unveiled this ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
Internet of Things (IoT) manufacturer Ciseco has launched the Raspberry Pi ‘Wireless Inventors Kit’ (RasWIK), featuring 88 pieces to provide everything a Pi owner needs to follow a series of step-by-step projects or to create their own wireless devices, without the need for configuration or even writing code.
RasWIK has been designed to be highly accessible, demystifying the dark art of wireless and enabling anyone with basic computing skills to begin building wireless devices with a Raspberry Pi. You can create anything from a simple traffic light, to a battery monitor, or even a temperature gauge that sends data to the Xively IoT cloud so billions can access the data.This month, Ciseco is giving away twelve Raspberry Pi Wireless Inventors kits, worth £49.99 each for EETimes Europe's readers to win.
And the winners are...
In our previous reader offer, Farsens was giving away five kits for EEtimes Europe readers to evaluate its FenixVortex, Kineo and X1 wireless, battery free sensor tags.
Lucky winners include Mr A. Neil from the UK, Mr. E. Delvaux from Belgium, Mr Lengal from the Czech Republic, Mr H. Bijlsma from the Netherlands, and Mr G. Pfaff from Germany. All should be receiving their packages soon. Lets wish them some interesting findings with their projects.
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.