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Primeur weekly 2020-05-25

Focus

InsideHPC's Rich Brueckner passes away at 58 ...

Only half of the EuroHPC countries confirmed they will participate in co-funding EuroHPC projects ...

Quantum computing

Atos and CSC empower the Finnish quantum research community with Atos Quantum Learning Machine ...

Quantum Hall effect 'reincarnated' in 3D topological materials ...

University of California Los Angeles physicists develop world's best quantum bits ...

Quantum leap: Photon discovery is a major step toward at-scale quantum technologies ...

Focus on Europe

HPC-AI Advisory Council and ISC Group continue Annual Student Cluster Competition as an online event ...

ELASTIC software architecture advances urban mobility in Florence ...

Middleware

Waste energy of LUMI supercomputer produces 20 percent of the district heat of Kajaani ...

Italy-based Do IT Systems becomes Bright Services Partner ...

Hardware

Microsoft claims to have built new supercomputer for OpenAI ...

New York University and IBM research takes electrons for a spin in moving toward more efficient, higher density data ...

GRC wins Phase I of AFWERX Programme ...

Samsung Electronics expands its foundry capacity with a new production line in Pyeongtaek, Korea ...

HPE reports Q2 results ...

Intersect360 Research invites your input in an all new survey ...

Applications

Scientists seeking therapies for deadly bacterial disease ...

2020 OLCF User Meeting will happen remote together ...

Summit supercomputer is mining for COVID-19 connections ...

A new method for unraveling complex gene interactions ...

ACM honours computing innovators for advances in research, education and industry ...

Discovery about the edge of fusion plasma could help realize fusion power ...

Superconductors with 'zeitgeist' - When materials differentiate between past and future ...

NIST team builds hybrid quantum system by entangling molecule with atom ...

BIOS IT partners with Panasas to deliver ActiveStor Ultra turnkey HPC storage appliances ...

Supercomputer model simulations reveal cause of Neanderthal extinction ...

Pittsburgh Supercomputing Center is supporting COVID-19 research ...

The Cloud

New technique separates industrial noise from natural seismic signals ...

Lyell Immunopharma goes all-in on AWS as its Cloud provider ...

WekaIO furthers Weka AI by integrating with deep learning pipeline management solution from Valohai ...

Quantum leap: Photon discovery is a major step toward at-scale quantum technologies


The silicon photonic chip used in this study to generate and interfere high-quality photons. Credit: S Paesani.
20 May 2020 Bristol - A team of physicists at the University of Bristol has developed the first integrated photon source with the potential to deliver large-scale quantum photonics. The development of quantum technologies promises to have a profound impact across science, engineering and society. Quantum computers at scale will be able to solve problems intractable on even the most powerful current supercomputers, with many revolutionary applications, for example, in the design of new drugs and materials.

Integrated quantum photonics is a promising platform for developing quantum technologies due to its capacity to generate and control photons - single particles of light - in miniaturized complex optical circuits. Leveraging the mature CMOS Silicon industry for the fabrication of integrated devices enables circuits with the equivalent of thousands of optical fibres and components to be integrated on a single millimetre-scale chip.

The use of integrated photonics for developing scalable quantum technologies is in high demand. The University of Bristol is a pioneer in this field, as demonstrated by new research published in Nature Communications .

Dr. Stefano Paesani, lead author, explained: "An important challenge that has limited the scaling of integrated quantum photonics has been the lack of on-chip sources able to generate high-quality single photons. Without low-noise photon sources, errors in a quantum computation accumulate rapidly when increasing the circuit complexity, resulting in the computation being no longer reliable. Moreover, optical losses in the sources limit the number of photons the quantum computer can produce and process."

"In this work we found a way to resolve this and in doing so we developed the first integrated photon source compatible with large-scale quantum photonics. To achieve high-quality photons, we developed a novel technique - 'inter-modal spontaneous four-wave mixing' - where the multiple modes of light propagating through a Silicon waveguide are non-linearly interfered, creating ideal conditions for generating single photons."

Together with colleagues at the University of Trento in Italy, the team based at Prof. Anthony Laing's group in Bristol's Quantum Engineering Technology Labs (QETLabs) benchmarked the use of such sources for photonic quantum computing in a heralded Hong-Ou-Mandel experiment, a building block of optical quantum information processing, and obtained the highest quality on-chip photonic quantum interference ever observed (96% visibility).

Dr. Paesani stated: "The device demonstrated by far the best performances for any integrated photon source: spectral purity and indistinguishability of 99% and > 90% photon heralding efficiency."

Importantly, the Silicon photonic device was fabricated via CMOS-compatible processes in a commercial foundry, which means thousands of sources can easily be integrated on a single device. The research, funded by the Engineering and Physical Sciences Research Council (EPSRC) Hub in Quantum Computing and Simulation and the European Research Council (ERC), represents a major step toward building quantum circuits at scale and paves the way for several applications.

"We have solved a critical set of noises that had previously limited the scaling of photonic quantum information processing. For example, arrays of hundreds of these sources can be used to build near-term noisy intermediate-scale quantum (NISQ) photonic machines, where tens of photons can be processed to solve specialised tasks, such as the simulation of molecular dynamics or certain optimisation problems related to graph theory."

Now researchers have devised how to build near-perfect photon sources, over the next few months the scalability of the Silicon platform will allow them to integrate tens to hundreds on a single chip. Developing circuits at such a scale will make it possible for NISQ photonic quantum machines to solve industrially-relevant problems beyond the capability of current supercomputers.

"Furthermore, with advanced optimisation and miniaturisation of the photon source, our technology could lead to fault-tolerant quantum operations in the integrated photonics platform, unleashing the full potential of quantum computers", stated Dr. Paesani.

Source: University of Bristol

Back to Table of contents

Primeur weekly 2020-05-25

Focus

InsideHPC's Rich Brueckner passes away at 58 ...

Only half of the EuroHPC countries confirmed they will participate in co-funding EuroHPC projects ...

Quantum computing

Atos and CSC empower the Finnish quantum research community with Atos Quantum Learning Machine ...

Quantum Hall effect 'reincarnated' in 3D topological materials ...

University of California Los Angeles physicists develop world's best quantum bits ...

Quantum leap: Photon discovery is a major step toward at-scale quantum technologies ...

Focus on Europe

HPC-AI Advisory Council and ISC Group continue Annual Student Cluster Competition as an online event ...

ELASTIC software architecture advances urban mobility in Florence ...

Middleware

Waste energy of LUMI supercomputer produces 20 percent of the district heat of Kajaani ...

Italy-based Do IT Systems becomes Bright Services Partner ...

Hardware

Microsoft claims to have built new supercomputer for OpenAI ...

New York University and IBM research takes electrons for a spin in moving toward more efficient, higher density data ...

GRC wins Phase I of AFWERX Programme ...

Samsung Electronics expands its foundry capacity with a new production line in Pyeongtaek, Korea ...

HPE reports Q2 results ...

Intersect360 Research invites your input in an all new survey ...

Applications

Scientists seeking therapies for deadly bacterial disease ...

2020 OLCF User Meeting will happen remote together ...

Summit supercomputer is mining for COVID-19 connections ...

A new method for unraveling complex gene interactions ...

ACM honours computing innovators for advances in research, education and industry ...

Discovery about the edge of fusion plasma could help realize fusion power ...

Superconductors with 'zeitgeist' - When materials differentiate between past and future ...

NIST team builds hybrid quantum system by entangling molecule with atom ...

BIOS IT partners with Panasas to deliver ActiveStor Ultra turnkey HPC storage appliances ...

Supercomputer model simulations reveal cause of Neanderthal extinction ...

Pittsburgh Supercomputing Center is supporting COVID-19 research ...

The Cloud

New technique separates industrial noise from natural seismic signals ...

Lyell Immunopharma goes all-in on AWS as its Cloud provider ...

WekaIO furthers Weka AI by integrating with deep learning pipeline management solution from Valohai ...