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Primeur weekly 2019-05-20

Quantum computing

D-Wave makes new lower-noise quantum processor available in Leap ...

Atos delivers world's highest-performing quantum simulator to multinational energy company Total ...

Digital quantum simulators can be astonishingly robust ...

Generating high-quality single photons for quantum computing ...

Quantum world-first: researchers reveal accuracy of two-qubit calculations in silicon ...

Accelerating quantum technologies with materials processing at the atomic scale ...

Focus on Europe

GCS grants more than 1 billion computing core hours to national large-scale research projects ...

GCS announces new Chair of the Board, Prof. Dr. Dieter Kranzlmüller ...

Applications to 19th PRACE Project Access Call ...

PRACE Awards @ EuroHPC Summit Week 2019 ...

ISC High Performance announce David Keyes as 2020 Programme Chair ...

National eScience Symposium 2019 to cover Digital Challenges in Open Science ...

Middleware

RedLine becomes Bright Computing Services Partner ...

eSilicon chooses Univa to manage complex ASIC chip designs for high-bandwidth networking, high-performance computing, AI and 5G infrastructure applications ...

Hardware

Boston Limited to officially launch operations in South Africa during a series of High-Performance Computing (HPC) events hosted by the Centre for High-Performance Computing (CHPC) ...

HPE to acquire supercomputing vendor Cray ...

China to build new national supercomputing centre ...

Mellanox Capital invests in storage experts Excelero and WekaIO ...

Mellanox introduces advanced Network Telemetry technology to keep your business up and running ...

Supermicro announces third quarter fiscal 2019 preliminary financial information and files 2017 form 10-K and form 10-Q/As ...

Atos launches the world's highest performing Edge Computing server ...

NVIDIA announces financial results for first quarter fiscal 2020 ...

NERSC's Edison supercomputer to retire after five years of service ...

WekaIO raises $31,7 million in Series C funding ...

Energy free superfast computing invented by scientists using light pulses ...

Applications

Atos launches myQLM to democratize quantum programming for researchers, students and developers worldwide ...

A step towards probabilistic computing ...

CosmoGAN: Training a neural network to study dark matter ...

New AI sees like a human, filling in the blanks ...

Accelerating quantum technologies with materials processing at the atomic scale


Laser writing of individual nitrogen-vacancy defects in diamond with near-unity yield. Credit: Oxford University.
14 May 2019 Oxford - 'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.

However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been identified in which they survive long enough and are sufficiently controllable to be useful. Atomic defects in materials such as diamond are one such system, but a lack of techniques for fabricating and engineering crystal defects at the atomic scale has limited progress to date.

A team of scientists demonstrate, in a paper published in Optica , the success of the new method to create particular defects in diamonds known as nitrogen-vacancy (NV) colour centres. These comprise a nitrogen impurity in the diamond (carbon) lattice located adjacent to an empty lattice site or vacancy. The NV centres are created by focusing a sequence of ultrafast laser pulses into the diamond, the first of which has an energy high enough to generate vacancies at the centre of the laser focus, with subsequent pulses at a lower energy to mobilise the vacancies until one of them binds to a nitrogen impurity and forms the required complex.

The new research was carried out by a team led by Prof Jason Smith in the Department of Materials, University of Oxford, and Dr Patrick Salter and Prof Martin Booth in the Department of Engineering Science, University of Oxford, in collaboration with colleagues at the University of Warwick. It took place within the research programme of NQIT, the Quantum Computing Technology Hub of the UK Quantum Technologies Programme, with support from DeBeers UK who supplied the diamond sample.

The scientists' new method involves a sensitive fluorescence monitor being employed to detect light emitted from the focal region, so that the process can be actively controlled in response to the observed signal. By combining local control and feedback, the new method facilitates the production of arrays of single NV centres with exactly one colour centre at each site - a key capability in building scalable technologies. It also allows precise positioning of the defects, important for the engineering of integrated devices. The rapid single-step process is easily automated with each NV centre taking only seconds to create.

Prof. Martin Booth stated: "Colour centres in diamond offer a very exciting platform for developing compact and robust quantum technologies, and this new process is a potential game-changer in the engineering of the required materials. There is still more work to do in optimising the process, but hopefully this step will help to accelerate delivery of these technologies."

The scientists believe that this method might ultimately be used to fabricate centimetre-sized diamond chips containing 100.000 or more NV centres as a route towards the 'holy grail' of quantum technologies, a universal fault-tolerant quantum computer.

Prof. Jason Smith stated: "The first quantum computers are now starting to emerge but these machines, impressive as they are, only scratch the surface of what might be achieved and the platforms being used may not be sufficiently scalable to realise the full power that quantum computing has to offer. Diamond colour centres may provide a solution to this problem by packing high densities of qubits onto a solid state chip, which could be entangled with each other using optical methods to form the heart of a quantum computer. The ability to write NV centres into diamond with a high degree of control is an essential first step towards these and other devices."

Source: University of Oxford

Back to Table of contents

Primeur weekly 2019-05-20

Quantum computing

D-Wave makes new lower-noise quantum processor available in Leap ...

Atos delivers world's highest-performing quantum simulator to multinational energy company Total ...

Digital quantum simulators can be astonishingly robust ...

Generating high-quality single photons for quantum computing ...

Quantum world-first: researchers reveal accuracy of two-qubit calculations in silicon ...

Accelerating quantum technologies with materials processing at the atomic scale ...

Focus on Europe

GCS grants more than 1 billion computing core hours to national large-scale research projects ...

GCS announces new Chair of the Board, Prof. Dr. Dieter Kranzlmüller ...

Applications to 19th PRACE Project Access Call ...

PRACE Awards @ EuroHPC Summit Week 2019 ...

ISC High Performance announce David Keyes as 2020 Programme Chair ...

National eScience Symposium 2019 to cover Digital Challenges in Open Science ...

Middleware

RedLine becomes Bright Computing Services Partner ...

eSilicon chooses Univa to manage complex ASIC chip designs for high-bandwidth networking, high-performance computing, AI and 5G infrastructure applications ...

Hardware

Boston Limited to officially launch operations in South Africa during a series of High-Performance Computing (HPC) events hosted by the Centre for High-Performance Computing (CHPC) ...

HPE to acquire supercomputing vendor Cray ...

China to build new national supercomputing centre ...

Mellanox Capital invests in storage experts Excelero and WekaIO ...

Mellanox introduces advanced Network Telemetry technology to keep your business up and running ...

Supermicro announces third quarter fiscal 2019 preliminary financial information and files 2017 form 10-K and form 10-Q/As ...

Atos launches the world's highest performing Edge Computing server ...

NVIDIA announces financial results for first quarter fiscal 2020 ...

NERSC's Edison supercomputer to retire after five years of service ...

WekaIO raises $31,7 million in Series C funding ...

Energy free superfast computing invented by scientists using light pulses ...

Applications

Atos launches myQLM to democratize quantum programming for researchers, students and developers worldwide ...

A step towards probabilistic computing ...

CosmoGAN: Training a neural network to study dark matter ...

New AI sees like a human, filling in the blanks ...