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Primeur weekly 2011-09-26

Special

Steve Conway to highlight European HPC market at EGI Technical Forum ...

Exascale supercomputing

Appro and SDSC Gordon supercomputer to provide up to 35 million IOPS ...

"Stampede's" comprehensive capabilities to bolster U.S. open science computational resources ...

The Cloud

Bull and CA Technologies form a strategic alliance ...

Gresham Computing to launch Clareti Transaction Control ...

HP Channel Partners open new Cloud Centers of Excellence ...

IBM expands Cloud delivery of smarter commerce ...

'Managed application services added to Interoute’s unified computing portfolio ...

Midas Medici's CIMCORP wins $3 million contract for data centre solutions in Brazil ...

Oracle successfully completes Continua Health Alliance interoperability testing ...

SDSC announces scalable, high-performance data storage Cloud ...

Desktop Grids

e-ScienceTalk Briefing on Desktop Grids has just appeared ...

BOINC integrated with Wordpress ...

OurGrid version 4.2.6 now released ...

EuroFlash

Bright Computing now resells Altair PBS Professional Workload Manager, delivering HPC operational efficiencies and cost savings ...

Repsol and BSC create a joint research centre in Spain ...

Sailing Mediterranean ICT seas - Boosting high-speed ICT infrastructures across Europe and Mediterranean ...

Mini-quantum computer passes test ...

Like fish on waves: electrons go surfing ...

USFlash

Emerson Network Power doubles the life span of VME boards ...

Retailers generate high-volume sales with IBM solution for smarter commerce ...

Nearly half of IT decision makers favour solid-state storage technology ...

University of Minnesota Supercomputing Institute adds Dell Terascala HPC Storage Solution to Itasca system ...

Oracle announces the immediate availability of the Oracle Database Appliance ...

Oracle Financial Services Revenue Management and Billing running with Oracle Exadata Database Machine delivers extreme performance ...

Major supercomputing boost for University of Canterbury ...

Post-silicon computing ...

Mini-quantum computer passes test

22 Sep 2011 Delft - Scientists from Delft University of Technology and the FOM Foundation have succeeded in very accurately reading out a mini-quantum computer comprising four quantum bits on a chip of diamond. It marks an important step towards a quantum computer and makes it possible to test quantum algorithms, such as teleportation, on a chip. The researchers published their results 21 September on-line inNature.

A major challenge along the path to realising a quantum computer and the associated large-scale quantum hardware is the initialisation and reading out of the minuscule quantum bits. The spin rotation of both individual electrons and atomic nuclei functions as a quantum bit: left spin is a '0', and right spin is a '1'. Atomic nuclei are highly stable quantum bits as they scarcely interact with their surroundings. However, this property also makes it difficult to read out the state of atoms. A team from Delft University of Technology under the leadership of FOM scientist Dr.ir. Ronald Hanson has now solved this problem by using a captured electron as an intermediate station in the measurement.

The researchers can now determine the state (spin direction) of the electron quickly and accurately. They do this by sending laser pulses of an accurately preset wavelength at the electron. The electron absorbs the light and transmits it again if it is in the '0' state but does nothing if it is in the '1' state.

To read out the spin direction of the atomic nuclei as well, the researchers first perform a quantum operation. The electron then gets entangled with the atomic nuclei, and the information about the atom is transferred to the electron. The researchers subsequently read out the state of the electron and from this derive the original state of the atomic nuclei.

This measurement technique is special because the measurement does not alter the state of the atomic nuclei. It is therefore an ideal way of preparing the atomic nuclei for further quantum calculations and so for use in a quantum computer. The researchers demonstrated their technique on a mini-quantum computer comprising four quantum bits on a diamond chip.

The discovery that the fundamental natural laws of quantum mechanics make it possible to perform ultrafast calculations and transmit information completely securely, has elicited a worldwide race to construct the necessary 'quantum hardware'. For the past few years diamond has been the favourite material as quantum states are scarcely disrupted in this. This new read-out technique for quantum bits in diamond provides the researchers with many possibilities. For example, they want to test interesting phenomena such as teleportation and multiparticle entanglement in the laboratory. The read-out also makes it possible to implement the correction of elementary quantum errors, an essential aspect of a large-scale quantum computer.

The research was supported by a Marie Curie Intra European Fellowship of the Seventh European Community Framework Programme, FOM, the European Commission (SOLID) and the Research Corporation for Science Advancement (RCSA).
Source: Technical University Delft

Back to Table of contents

Primeur weekly 2011-09-26

Special

Steve Conway to highlight European HPC market at EGI Technical Forum ...

Exascale supercomputing

Appro and SDSC Gordon supercomputer to provide up to 35 million IOPS ...

"Stampede's" comprehensive capabilities to bolster U.S. open science computational resources ...

The Cloud

Bull and CA Technologies form a strategic alliance ...

Gresham Computing to launch Clareti Transaction Control ...

HP Channel Partners open new Cloud Centers of Excellence ...

IBM expands Cloud delivery of smarter commerce ...

'Managed application services added to Interoute’s unified computing portfolio ...

Midas Medici's CIMCORP wins $3 million contract for data centre solutions in Brazil ...

Oracle successfully completes Continua Health Alliance interoperability testing ...

SDSC announces scalable, high-performance data storage Cloud ...

Desktop Grids

e-ScienceTalk Briefing on Desktop Grids has just appeared ...

BOINC integrated with Wordpress ...

OurGrid version 4.2.6 now released ...

EuroFlash

Bright Computing now resells Altair PBS Professional Workload Manager, delivering HPC operational efficiencies and cost savings ...

Repsol and BSC create a joint research centre in Spain ...

Sailing Mediterranean ICT seas - Boosting high-speed ICT infrastructures across Europe and Mediterranean ...

Mini-quantum computer passes test ...

Like fish on waves: electrons go surfing ...

USFlash

Emerson Network Power doubles the life span of VME boards ...

Retailers generate high-volume sales with IBM solution for smarter commerce ...

Nearly half of IT decision makers favour solid-state storage technology ...

University of Minnesota Supercomputing Institute adds Dell Terascala HPC Storage Solution to Itasca system ...

Oracle announces the immediate availability of the Oracle Database Appliance ...

Oracle Financial Services Revenue Management and Billing running with Oracle Exadata Database Machine delivers extreme performance ...

Major supercomputing boost for University of Canterbury ...

Post-silicon computing ...