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Primeur weekly 2014-10-06

The Cloud

Oracle unveils latest Cloud applications at Oracle OpenWorld ...

Fujitsu and Midokura strengthen partnership to jointly develop global Cloud business ...

EuroFlash

Altera Programmable Logic inspires innovation at 2014 Maker Faire Europe ...

Human Brain Project (HBP) Pre-Commercial Procurement under way ...

UberCloud to host NICE software solutions in the UberCloud marketplace ...

Quantum environmentalism ...

Atos to initiate buyout offer followed by a squeeze-out on Bull's shares ...

USFlash

CoolIT Systems liquid cools Intel 'Cherry Creek' supercomputer for UNLV deployment at SUPERNAP to boost scientific research ...

Altera and ARM expand strategic partnership for SoC development tools ...

New report explores the value of government leadership in supercomputing for industrial competitiveness ...

Australian Institute for Bioengineering and Nanotechnology to roll out supercomputer ...

Iowa State physicists among teams preparing for new Energy Department supercomputer ...

Four projects headed by University of Wyoming researchers selected for supercomputer use ...

ICL becomes the newest Intel Parallel Computing Center (IPCC) ...

Laying the groundwork for data-driven science ...

Cray launches next-generation supercomputer and cluster systems ...

DataDirect Networks introduces industry's first enterprise-class scale-out parallel file system appliance, making customers’ Big Data deployments effortless and infinitely scalable ...

Indiana University boots up new supercomputer ...

SDSC granted $1.3 million award for 'SeedMe.org' data sharing infrastructure ...

Brain cell linker dependence shown by XSEDE/TACC supercomputer simulations ...

A deep dive into plasma ...

University of Virginia's new $2.4 million computing cluster to enhance and facilitate Big Data research ...

Carnegie Mellon leads new NSF project mining educational data to improve learning ...

A new approach to on-chip quantum computing ...

Princeton scientists observe elusive particle that is its own antiparticle ...

HP extends benefits of ARM architecture into the data centre with new servers ...

IBM provides clients superior alternative to x86-based commodity servers ...

Oracle announces Exalytics In-Memory Machine X4-4 ...

Oracle introduces Oracle Virtual Networking support for OpenStack ...

National Institute of Biomedical Genomics (NIBMG) deploys DataDirect networks storage to achieve significant oerformance improvement in world-class genomics research and collaboration for oral cancer ...

A new approach to on-chip quantum computing


Lucia Caspani
2 Oct 2014 Washington - Commercial devices capable of encrypting information in unbreakable codes exist today, thanks to recent quantum optics advances, especially the generation of photon pairs - tiny entangled particles of light. Now, an international team of researchers led by professor Roberto Morandotti of INRS-EMT in Canada, is introducing a new method to achieve a different type of photon pair source that fits into the tiny space of a computer chip.

The team's method, which generates "mixed up" photon pairs from devices that are less than one square millimeter in area, could form the core of the next-generation of quantum optical communication and computing technology. The research will be presented at The Optical Society's (OSA) 98th Annual Meeting, Frontiers in Optics, being held October 19-23 in Tucson, Arizona, USA.

One of the properties of light exploited within quantum optics is "photon polarization", which is essentially the direction in which the electric field associated with the photon oscillates. The research team set out to find a way to directly "mix up", or cross-polarize, the photons via a nonlinear optical process on a chip.

"While several efforts have been devoted to develop on-chip sources of polarization-entangled photons, the process typically used to generate these photons only allows the generation of photons with the same polarization as the laser beam used to pump the device - either both horizontal or vertical - after which entanglement can be achieved by accurately mixing these states. Now, we have found a way to directly generate cross-polarized photon pairs", stated Lucia Caspani, a postdoctoral fellow at INRS-EMT and co-author of the Frontiers in Optics paper.

To generate the cross-polarized photons, Lucia Caspani and colleagues used two different laser beams at different wavelengths - one vertically polarized and another horizontally polarized. The approach, however, came with a potential pitfall: the classical process between the two pump beams could destroy the photons' fragile quantum state.

To address this challenge, the team, which also includes researchers from RMIT University in Australia and City University of Hong Kong, pioneered a new approach based on a micro-ring resonator - a tiny optical cavity with a diameter on the order of tens to hundreds of micrometers - that operates in such a way that energy conservation constraints suppress classical effects while amplifying quantum processes.

While a similar suppression of classical effects has been observed in gas vapors and complex micro-structured fibers, this is the first time it has been reported on a chip, thus opening a clear route for building scalable integrated devices.

"Our approach opens the door to directly mixing different polarizations on a chip", Lucia Caspani pointed out. "At very low power, our device directly generates photon pairs with orthogonal polarizations, which can be exploited for quantum communication and computing protocols."

The fabrication process of the chip is also compatible with that currently used for electronic chips. "It enables a future co-existence of our device with standard integrated circuits", stated Lucia Caspani, which is a fundamental requirement for the widespread adoption of optical quantum technologies.

The presentation titled "Direct Generation of Orthogonally Polarized Photon Pairs via Spontaneous Non-Degenerate FWM on a Chip", takes place October 21 at 11 a.m. MST at the Arizona Ballroom, Salon 8 at the JW Marriott Tucson Starr Pass Resort in Tucson.
Source: The Optical Society

Back to Table of contents

Primeur weekly 2014-10-06

The Cloud

Oracle unveils latest Cloud applications at Oracle OpenWorld ...

Fujitsu and Midokura strengthen partnership to jointly develop global Cloud business ...

EuroFlash

Altera Programmable Logic inspires innovation at 2014 Maker Faire Europe ...

Human Brain Project (HBP) Pre-Commercial Procurement under way ...

UberCloud to host NICE software solutions in the UberCloud marketplace ...

Quantum environmentalism ...

Atos to initiate buyout offer followed by a squeeze-out on Bull's shares ...

USFlash

CoolIT Systems liquid cools Intel 'Cherry Creek' supercomputer for UNLV deployment at SUPERNAP to boost scientific research ...

Altera and ARM expand strategic partnership for SoC development tools ...

New report explores the value of government leadership in supercomputing for industrial competitiveness ...

Australian Institute for Bioengineering and Nanotechnology to roll out supercomputer ...

Iowa State physicists among teams preparing for new Energy Department supercomputer ...

Four projects headed by University of Wyoming researchers selected for supercomputer use ...

ICL becomes the newest Intel Parallel Computing Center (IPCC) ...

Laying the groundwork for data-driven science ...

Cray launches next-generation supercomputer and cluster systems ...

DataDirect Networks introduces industry's first enterprise-class scale-out parallel file system appliance, making customers’ Big Data deployments effortless and infinitely scalable ...

Indiana University boots up new supercomputer ...

SDSC granted $1.3 million award for 'SeedMe.org' data sharing infrastructure ...

Brain cell linker dependence shown by XSEDE/TACC supercomputer simulations ...

A deep dive into plasma ...

University of Virginia's new $2.4 million computing cluster to enhance and facilitate Big Data research ...

Carnegie Mellon leads new NSF project mining educational data to improve learning ...

A new approach to on-chip quantum computing ...

Princeton scientists observe elusive particle that is its own antiparticle ...

HP extends benefits of ARM architecture into the data centre with new servers ...

IBM provides clients superior alternative to x86-based commodity servers ...

Oracle announces Exalytics In-Memory Machine X4-4 ...

Oracle introduces Oracle Virtual Networking support for OpenStack ...

National Institute of Biomedical Genomics (NIBMG) deploys DataDirect networks storage to achieve significant oerformance improvement in world-class genomics research and collaboration for oral cancer ...