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Primeur weekly 2019-05-06

Exascale supercomputing

Towards flexible Exascale computing - Installation of the first DEEP-EST module by MEGWARE ...

Quantum computing

HKUST physicist contributes to new record of quantum memory efficiency ...

Researchers discover quantum effect in hard disk drive material ...

Focus on Europe

bluechip partners with E4 Computer Engineering, an HPC specialist ...

Hans Meuer Award finalists selected ...

Middleware

Red Hat drives operational simplicity and modern system support with latest version of Red Hat Virtualization ...

Hardware

Supermicro announces expansion of Silicon Valley Corporate Headquarters and groundbreaking for new 800,000-square foot building in Taiwan ...

New Pittsburgh University computer to launch into Space ...

Parallel Distributed Systems Facility had a storied history in serving high-energy physics and nuclear physics experiments ...

Violin doubles capacity of XVS 8 storage platform with performance-tuned standard NVMe SSDs ...

Arm announces appointment of Inder Singh as Chief Financial Officer ...

Promising material could lead to faster, cheaper computer memory ...

Applications

NCSA contributes to LIGO and Virgo neutron star collision detection ...

Collaborative efforts produce clinical workflows for fast, translational genetic analysis ...

Novel software to balance data processing load in supercomputers to be presented ...

Unhackable: New chip stops attacks before they start ...

Grant to provide computational modeling support for hypersonic vehicles ...

Transforming waste heat into clean energy ...

Liqid enables industry-first unified multi-fabric support for composable infrastructure ...

Simulations identify importance of lattice distortions in ion-conducting fuel cell materials ...

Oak Ridge National Laboratory' Summit to perform cosmological and reactor simulations ...

The Cloud

SDSC's Sherlock Cloud expands hybrid Cloud offerings ...

Cornell investigating multi-cloud cost management with RightScale ...

Red Hat helps Public Health England use open source to pursue hybrid Cloud operations ...

Red Hat Upgrades the business developer's toolbox for a Cloud-native world with latest release of Red Hat Process Automation ...

HKUST physicist contributes to new record of quantum memory efficiency


Experimental set-up and energy level scheme of the single-photon quantum memory. Credit: The Hong Kong University of Science and Technology.
27 Apr 2019 Hong Kong - Like memories in computers, quantum memories are essential components for quantum computers - a new generation of data processors that obey quantum mechanics laws and can overcome the limitations of classical computers. They may push boundaries of fundamental science and help create new drugs, explain cosmological mysteries, or enhance accuracy of forecasts and optimization plans with their potent computational power. Quantum computers are expected to be much faster and more powerful than their traditional counterparts as information is calculated in qubits - which unlike the older units (bits) used in classical computers, can represent both 0 and 1 at the same time.

Photonic quantum memories allow for the storage and retrieval of flying single-photon quantum states. However, production of such highly-efficient quantum memories remains a major challenge as it requires perfectly matched photon-matter quantum interface. Meanwhile, the energy of a single photon is too weak and can be easily lost into the noisy sea of stray light background. For a long time, these problems suppressed quantum memory efficiencies to below 50% - a threshold value crucial for practical applications.

Now for the first time in history, a joint research team led by Prof. Du Shengwang from the Department of Physics and William Mong Institute of Nano Science and Technology at the Hong Kong University of Science and Technology (HKUST); Prof. Zhang Shanchao from SCNU who graduated his PhD study at HKUST; Prof. Yan Hui from SCNU and a former postdoctoral fellow at HKUST; as well as Prof. Zhu Shi-Liang from SCNU and Nanjing University, has found a way to boost the efficiency of photonic quantum memories to over 85% with a fidelity of over 99%.

The team created such a quantum memory by trapping billions of rubidium atoms into a hair-like tiny space - those atoms are cooled down to nearly absolute zero temperature (about 0.00001 K) using lasers and magnetic field. The team also found a smart way to distinguish the single photon from the noisy background light sea. The finding brought the dream of an 'universal' quantum computer a step closer to reality. Such quantum memories can also be used as repeaters in a quantum network, laying the foundation for a new generation of quantum-based internet.

"In this work, we code a flying qubit onto the polarization of a single photon and store it into the laser-cooled atoms", stated Prof Du. "Although the quantum memory demonstrated in this work is only for one qubit operation, it opens the possibility for emerging quantum technology and engineering in the future."

The finding was recently published as a cover story of the authoritative journal Nature Photonics - the latest of a series of research from Prof Du's lab on quantum memory, first begun in 2011.

Source: Hong Kong University of Science and Technology - HKUST

Back to Table of contents

Primeur weekly 2019-05-06

Exascale supercomputing

Towards flexible Exascale computing - Installation of the first DEEP-EST module by MEGWARE ...

Quantum computing

HKUST physicist contributes to new record of quantum memory efficiency ...

Researchers discover quantum effect in hard disk drive material ...

Focus on Europe

bluechip partners with E4 Computer Engineering, an HPC specialist ...

Hans Meuer Award finalists selected ...

Middleware

Red Hat drives operational simplicity and modern system support with latest version of Red Hat Virtualization ...

Hardware

Supermicro announces expansion of Silicon Valley Corporate Headquarters and groundbreaking for new 800,000-square foot building in Taiwan ...

New Pittsburgh University computer to launch into Space ...

Parallel Distributed Systems Facility had a storied history in serving high-energy physics and nuclear physics experiments ...

Violin doubles capacity of XVS 8 storage platform with performance-tuned standard NVMe SSDs ...

Arm announces appointment of Inder Singh as Chief Financial Officer ...

Promising material could lead to faster, cheaper computer memory ...

Applications

NCSA contributes to LIGO and Virgo neutron star collision detection ...

Collaborative efforts produce clinical workflows for fast, translational genetic analysis ...

Novel software to balance data processing load in supercomputers to be presented ...

Unhackable: New chip stops attacks before they start ...

Grant to provide computational modeling support for hypersonic vehicles ...

Transforming waste heat into clean energy ...

Liqid enables industry-first unified multi-fabric support for composable infrastructure ...

Simulations identify importance of lattice distortions in ion-conducting fuel cell materials ...

Oak Ridge National Laboratory' Summit to perform cosmological and reactor simulations ...

The Cloud

SDSC's Sherlock Cloud expands hybrid Cloud offerings ...

Cornell investigating multi-cloud cost management with RightScale ...

Red Hat helps Public Health England use open source to pursue hybrid Cloud operations ...

Red Hat Upgrades the business developer's toolbox for a Cloud-native world with latest release of Red Hat Process Automation ...