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Primeur weekly 2019-03-25

Special

Meeting the challenges of tomorrow - at scale ...

FocusCoE to support HPC Centres of Excellence for outreach to the broader European HPC community ...

Focus

University of Maribor and XENYA signed contract for an HPC system as part of the national research infrastructure project HPC - RIVR, readying Slovenia for EuroHPC participation ...

Exascale supercomputing

U.S. Department of Energy and Intel to deliver first exascale supercomputer ...

Argonne deepens the Department of Energy's footprint in high-impact computing ...

Crowd computing

NVIDIA announces Jetson Nano: $99 tiny, yet mighty NVIDIA CUDA-X AI computer that runs all AI models ...

Quantum computing

In a new quantum simulator, light behaves like a magnet ...

Long-distance quantum information exchange - success at the nanoscale ...

Middleware

NERSC and NVIDIA to partner on compiler development for Perlmutter system ...

Hardware

DDN to unveil transformative solutions for accelerating AI, analytics and Deep Learning at NVIDIA GTC 2019 ...

NVIDIA introduces new breed of high-performance workstations for millions of data scientists ...

Global computer companies announce NVIDIA-powered enterprise servers optimized for data science ...

Mellanox HDR 200G InfiniBand deep learning acceleration engines demonstrates two times higher performance for Artificial Intelligence (AI) platforms with NVIDIA ...

Altair OptiStruct runs up to 10x faster on NVIDIA GPUs ...

Pure Storage unveils NVIDIA-powered solutions for full spectrum of AI initiatives ...

Preferred Networks builds MN-2, a state-of-the-art supercomputer powered with NVIDIA GPUs ...

Supermicro offers end-to-end portfolio of NVIDIA GPU systems ...

Applications

H5 Data Centers completes a High-Performance Compute (HPC) suite in partnership with Forced Physics Data Center Technology ...

Supercomputers to help supercharge ceramic matrix composite manufacturing ...

A surprising, cascading earthquake ...

Brain-inspired AI inspires insights about the brain and vice versa ...

Supercomputer simulations shed light on how liquid drops combine ...

Novel MD simulation sheds light on mystery of hydrated electron's structure ...

Kicking neural network automation into high gear ...

DOE extends University PPPL contract ...

The Cloud

NVIDIA teams with Amazon Web Services to bring AI to millions of connected devices ...

In a new quantum simulator, light behaves like a magnet


Riccardo Rota and Vincenzo Savona, the two EPFL physicists leading the study, working on the design of their quantum simulator. Credit: R. Ravasio/EPFL.
21 Mar 2019 Lausanne - When subject to the laws of quantum mechanics, systems made of many interacting particles can display behaviour so complex that its quantitative description defies the capabilities of the most powerful computers in the world. In 1981, the visionary physicist Richard Feynman argued we can simulate such complex behaviour using an artificial apparatus governed by the very same quantum laws - what has come to be known as a "quantum simulator".

One example of a complex quantum system is that of magnets placed at really low temperatures. Close to absolute zero (-273.15 degrees Celsius), magnetic materials may undergo what is known as a "quantum phase transition". Like a conventional phase transition (e.g. ice melting into water, or water evaporating into steam), the system still switches between two states, except that close to the transition point the system manifests quantum entanglement - the most profound feature predicted by quantum mechanics. Studying this phenomenon in real materials is an astoundingly challenging task for experimental physicists.

But physicists led by Vincenzo Savona at EPFL have now come up with a quantum simulator that promises to solve the problem. "The simulator is a simple photonic device that can easily be built and run with current experimental techniques", stated Riccardo Rota, the postdoc at Vincenzo Savona's lab who led the study. "But more importantly, it can simulate the complex behavior of real, interacting magnets at very low temperatures."

The simulator may be built using superconducting circuits - the same technological platform used in modern quantum computers. The circuits are coupled to laser fields in such a way that it causes an effective interaction among light particles (photons). "When we studied the simulator, we found that the photons behaved in the same way as magnetic dipoles across the quantum phase transition in real materials", stated Riccardo Rota. In short, we can now use photons to run a virtual experiment on quantum magnets instead of having to set up the experiment itself.

"We are theorists", stated Vincenzo Savona. "We came up with the idea for this particular quantum simulator and modelled its behaviour using traditional computer simulations, which can be done when the quantum simulator addresses a small enough system. Our findings prove that the quantum simulator we propose is viable, and we are now in talks with experimental groups who would like to actually build and use it."

Understandably, Riccardo Rota is excited: "Our simulator can be applied to a broad class of quantum systems, allowing physicists to study several complex quantum phenomena. It is a truly remarkable advance in the development of quantum technologies."

Riccardo Rota, Fabrizio Minganti, Cristiano Ciuti, and Vincenzo Savona are the authors of the paper titled " Quantum critical regime in a quadratically-driven nonlinear photonic lattice ". This paper appeared inPhysical Review Letters122, 110405 on 21 March 2019 - DOI: 10.1103/PhysRevLett.122.110405.

Source: Ecole Polytechnique Fédérale de Lausanne - EPFL

Back to Table of contents

Primeur weekly 2019-03-25

Special

Meeting the challenges of tomorrow - at scale ...

FocusCoE to support HPC Centres of Excellence for outreach to the broader European HPC community ...

Focus

University of Maribor and XENYA signed contract for an HPC system as part of the national research infrastructure project HPC - RIVR, readying Slovenia for EuroHPC participation ...

Exascale supercomputing

U.S. Department of Energy and Intel to deliver first exascale supercomputer ...

Argonne deepens the Department of Energy's footprint in high-impact computing ...

Crowd computing

NVIDIA announces Jetson Nano: $99 tiny, yet mighty NVIDIA CUDA-X AI computer that runs all AI models ...

Quantum computing

In a new quantum simulator, light behaves like a magnet ...

Long-distance quantum information exchange - success at the nanoscale ...

Middleware

NERSC and NVIDIA to partner on compiler development for Perlmutter system ...

Hardware

DDN to unveil transformative solutions for accelerating AI, analytics and Deep Learning at NVIDIA GTC 2019 ...

NVIDIA introduces new breed of high-performance workstations for millions of data scientists ...

Global computer companies announce NVIDIA-powered enterprise servers optimized for data science ...

Mellanox HDR 200G InfiniBand deep learning acceleration engines demonstrates two times higher performance for Artificial Intelligence (AI) platforms with NVIDIA ...

Altair OptiStruct runs up to 10x faster on NVIDIA GPUs ...

Pure Storage unveils NVIDIA-powered solutions for full spectrum of AI initiatives ...

Preferred Networks builds MN-2, a state-of-the-art supercomputer powered with NVIDIA GPUs ...

Supermicro offers end-to-end portfolio of NVIDIA GPU systems ...

Applications

H5 Data Centers completes a High-Performance Compute (HPC) suite in partnership with Forced Physics Data Center Technology ...

Supercomputers to help supercharge ceramic matrix composite manufacturing ...

A surprising, cascading earthquake ...

Brain-inspired AI inspires insights about the brain and vice versa ...

Supercomputer simulations shed light on how liquid drops combine ...

Novel MD simulation sheds light on mystery of hydrated electron's structure ...

Kicking neural network automation into high gear ...

DOE extends University PPPL contract ...

The Cloud

NVIDIA teams with Amazon Web Services to bring AI to millions of connected devices ...