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Primeur weekly 2016-05-30

Focus

CERN technology for Large Hadron Collider to evolve from computing Grid to scientific Cloud ...

Quantum computing

Purdue professor selected to establish Station Q Purdue, part of Microsoft Station Q ...

Top international award for UNSW Australia quantum computing chief ...

D-Wave Systems to organize Quantum Computing Seminar at ISC16 ...

New device steps toward isolating single electrons for quantum computing ...

Dartmouth team creates new method to control quantum systems ...

Focus on Europe

The Instituto de Astrofísica de Canarias will participate in new European SUNDIAL network ...

Discover how digital technology impacts scientific practice ...

Digital Infrastructures for Research 2016 to issue Call for Papers ...

Middleware

Cray Urika-GX system harnesses supercomputing performance to tackle Big Data analytics ...

Hardware

Cavium announces ThunderX2 ...

Gigantic ultrafast spin currents ...

Introducing the AMD FirePro S7100X, the industry’s first and only hardware-virtualized GPU for blade servers ...

STULZ USA announces strategic investment and commercial partnership with CoolIT Systems ...

Made-in-India supercomputers by August 2017 under govt's Rs 4,500-crore National Supercomputing Mission ...

Applications

KIT brings outstanding experimental physicist back to Germany ...

NOAA's premier forecast model goes 4D ...

Argonne launches first tech incubator ...

Current atmospheric models underestimate the dirtiness of Arctic air ...

The Cloud

FleetCor adopts IBM Cloud to help businesses stay in the fast lane ...

EnerTech of Kuwait Investment Authority selects Cloud-based analytics service from IBM and Waterfund for insights into water costs ...

IBM offers Watson services on Twilio marketplace ...

Dartmouth team creates new method to control quantum systems

23 May 2016 Hanover - Dartmouth College researchers have discovered a method to design faster pulses, offering a new way to accurately control quantum systems. Quantum physics defines the rules that govern the realm of the ultra-small - the atomic and sub-atomic world - which explains the behavior of matter and its interactions. Scientists have been trying to exploit the seemingly strange properties of this quantum world to build practical devices, such as ultra-fast computers or ultra-precise quantum sensors. Building a practical device, however, requires accurately controlling your device to make it do what you want. This turns out to be challenging since quantum properties are very fragile.

"Ideally, you would like to come up with a method to control the device accurately even in the presence of uncertainties and errors", stated co-author Chandrasekhar Ramanathan, an assistant professor of physics and astronomy.

One way to achieve this is through the use of adiabatic pulses, a class of amplitude- and frequency-modulated pulses that are used extensively to enable robust control of quantum operations. In quantum physics, an adiabatic process is one in which the configuration of a system is changed gradually enough so that the system is able to respond to the changes without being excited to higher energies. The drawback to using these adiabatic pulses is that they are typically very slow.

The Dartmouth team investigated a new class of faster adiabatic pulses that still retained the property of being insensitive to small errors.

"We came up with a systematic method to design fast adiabatic pulses, using only the controls that an experimenter may have available in the laboratory, thus offering a new way to accurately control quantum devices", Chandrasekhar Ramanathan stated.

The findings appear in the journalPhysical Review A.
Source: Dartmouth College

Back to Table of contents

Primeur weekly 2016-05-30

Focus

CERN technology for Large Hadron Collider to evolve from computing Grid to scientific Cloud ...

Quantum computing

Purdue professor selected to establish Station Q Purdue, part of Microsoft Station Q ...

Top international award for UNSW Australia quantum computing chief ...

D-Wave Systems to organize Quantum Computing Seminar at ISC16 ...

New device steps toward isolating single electrons for quantum computing ...

Dartmouth team creates new method to control quantum systems ...

Focus on Europe

The Instituto de Astrofísica de Canarias will participate in new European SUNDIAL network ...

Discover how digital technology impacts scientific practice ...

Digital Infrastructures for Research 2016 to issue Call for Papers ...

Middleware

Cray Urika-GX system harnesses supercomputing performance to tackle Big Data analytics ...

Hardware

Cavium announces ThunderX2 ...

Gigantic ultrafast spin currents ...

Introducing the AMD FirePro S7100X, the industry’s first and only hardware-virtualized GPU for blade servers ...

STULZ USA announces strategic investment and commercial partnership with CoolIT Systems ...

Made-in-India supercomputers by August 2017 under govt's Rs 4,500-crore National Supercomputing Mission ...

Applications

KIT brings outstanding experimental physicist back to Germany ...

NOAA's premier forecast model goes 4D ...

Argonne launches first tech incubator ...

Current atmospheric models underestimate the dirtiness of Arctic air ...

The Cloud

FleetCor adopts IBM Cloud to help businesses stay in the fast lane ...

EnerTech of Kuwait Investment Authority selects Cloud-based analytics service from IBM and Waterfund for insights into water costs ...

IBM offers Watson services on Twilio marketplace ...