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Primeur weekly 2013-09-02

Focus

Using one Cloud for Cloud computing today? Perhaps two Clouds? In the future there will be MultiClouds. An interview with Dana Petcu of the West University of Timisoara ...

The Cloud

VMware delivers vCloud Hybrid Service ...

HP and SAP collaborate to deliver HP As-a-Service solution for SAP HANA ...

Dell delivers innovative Cloud and virtualization solutions blending VMware technology with Dell end-to-end offerings ...

New FICO software enables data scientists to transform Big Data into predictive models ...

Smart is the new green in Latin America ...

VMware management solutions demonstrated on stage at VMworld ...

HP and Yorkshire Building Society boost agility for financial services providers ...

IBM closes acquisition of CSL International ...

University of California deploys Huawei's Cloud storage system to support computational astrophysics research ...

Desktop Grids

Neutron stars in the computer Cloud ...

EuroFlash

Video Design brings Dataton WATCHOUT and WATCHPAX to InfoComm India 2013 ...

New UK/USA agreement will use high performance computing to boost economic competitiveness ...

Immanuel Bloch is to receive the Körber Prize 2013 ...

Light on twenty-year-old mystery ...

University of Tübingen physicists create interface between atoms and superconductors ...

USFlash

Allinea tools help Canada close innovation gap ...

Dell furthers commitment to Asia with transformative technology solutions from the data centre to the end device ...

Control scheme dynamically maintains unstable quantum system ...

Hadoop release 2.1.0-beta available ...

Mapping the Earth's magnetosphere to predict and prepare for space-weather events ...

EMC and VMware join forces around software-defined storage and VMware virtual SAN ...

HP and VMware enable customers to unify data centre networks ...

OSC hosts first meeting of the MVAPICH Users Group ...

Vampir takes a bite out of inefficiency as codes run on bigger supercomputers ...

HP helps HoneyBaked Ham of Georgia manage seasonal demand via tenfold performance boost ...

University of Tübingen physicists create interface between atoms and superconductors

29 Aug 2013 Tübingen - The coherence of quantum systems is the foundation upon which hardware for future information technologies is based. Quantum information is carried by units called quantum bits, or qubits. They can be used to secure electronic communications - and they enable very fast searches of databases. But qubits are also very unstable. Professors József Fortágh, Dieter Kölle and Reinhold Kleiner of Tübingen's Institute of Physics have developed a new electronic component which will help to deal with this problem. The researchers' long-term goal is to process, transfer and store superposition states such as the overlapping of the binary digits zero and one. The initial results of their work are to be published in the journalNature Communicationson 29 August 2013.

The researchers aim to link two systems and draw on the advantages of both. Superconducting circuits, which are structured on microchips using standard technology, can process quantum information quickly but cannot store it for very long. By contrast, atoms, nature's smallest electric circuits, can serve as a natural quantum storage unit. "In the future, this combination will allow us to transfer information from superconducting circuits into ensembles of atoms and store it", stated Professor József Fortágh.

The atoms are trapped in a magnetic field above the surface of the microchip. Because superconductors allow an electric current to flow without resistance, the current does not become weaker in a superconducting ring. Institute of Physics PhD students Helge Hattermann and Daniel Bothner along with postdoctoral researcher Simon Bernon have made use of this to construct a complex superconducting ring-circuit and a particularly stable storage space for atoms. And the researchers can test how long atoms remain in the quantum superposition states within the system - by using the atoms themselves as a clock.

Today's definition of a second is given to us by the caesium atom, with a frequency of approximately nine billion Hertz per second, corresponding to the transition between its two ground states. Rubidium, the atom used for the experiments in Tübingen, is a secondary frequency standard. An atomic clock's precision is based on the constant transition between quantum states. Just like the swinging of the pendulum of a grandfather clock, an atomic clock's oscillations become weaker with time - when the quantum superpositions decay.

The atomic clock integrated into the superconducting chip indicates that the atoms suspended above the chip remain in their quantum superposition states for several seconds. By comparison, solid-state quantum storage retains coherence for only microseconds. "This result paves the way for new quantum electronic components for information processing systems", József Fortágh stated. The researchers at the University of Tübingen's CQ Center for Collective Quantum Phenomena are now planning experiments on atoms in superconducting microwave resonators - which could serve as a shuttle for data between integrated circuits and atoms.

This research is sponsored by the German Research Foundation, DFG collaborative research centre TRR21 and the European Research Council (ERC).

S. Bernon, H. Hattermann, D. Bothner, M. Knufinke, P. Weiss, F. Jessen, D. Cano, M. Kemmler, R. Kleiner, D. Koelle & J. Fortágh are the authors of the paper titled "Manipulation and coherence of ultra-cold atoms on a superconducting atom chip" which appears inNature Communications, Online version, DOI: 10.1038/ncomms3380
Source: Universitaet Tübingen

Back to Table of contents

Primeur weekly 2013-09-02

Focus

Using one Cloud for Cloud computing today? Perhaps two Clouds? In the future there will be MultiClouds. An interview with Dana Petcu of the West University of Timisoara ...

The Cloud

VMware delivers vCloud Hybrid Service ...

HP and SAP collaborate to deliver HP As-a-Service solution for SAP HANA ...

Dell delivers innovative Cloud and virtualization solutions blending VMware technology with Dell end-to-end offerings ...

New FICO software enables data scientists to transform Big Data into predictive models ...

Smart is the new green in Latin America ...

VMware management solutions demonstrated on stage at VMworld ...

HP and Yorkshire Building Society boost agility for financial services providers ...

IBM closes acquisition of CSL International ...

University of California deploys Huawei's Cloud storage system to support computational astrophysics research ...

Desktop Grids

Neutron stars in the computer Cloud ...

EuroFlash

Video Design brings Dataton WATCHOUT and WATCHPAX to InfoComm India 2013 ...

New UK/USA agreement will use high performance computing to boost economic competitiveness ...

Immanuel Bloch is to receive the Körber Prize 2013 ...

Light on twenty-year-old mystery ...

University of Tübingen physicists create interface between atoms and superconductors ...

USFlash

Allinea tools help Canada close innovation gap ...

Dell furthers commitment to Asia with transformative technology solutions from the data centre to the end device ...

Control scheme dynamically maintains unstable quantum system ...

Hadoop release 2.1.0-beta available ...

Mapping the Earth's magnetosphere to predict and prepare for space-weather events ...

EMC and VMware join forces around software-defined storage and VMware virtual SAN ...

HP and VMware enable customers to unify data centre networks ...

OSC hosts first meeting of the MVAPICH Users Group ...

Vampir takes a bite out of inefficiency as codes run on bigger supercomputers ...

HP helps HoneyBaked Ham of Georgia manage seasonal demand via tenfold performance boost ...