A new spin in diamonds for quantum technologies

Dec 20, 2011

(PhysOrg.com) -- To explore the future potential of diamonds in quantum devices, researchers from Macquarie University have collaborated with the University of Stuttgart and University of Ulm in Germany towards developing new sensors based on the common defect found in the diamond structure known as the nitrogen-vacancy (NV) center.

These sensors measure weak magnetic and electric fields at the and will become important in the future development of devices and electrical and .

“The NV centre is a favourable system for quantum engineering and measurement techniques which we hope to exploit,” says Professor Jason Twamley.

Known for their durability and structural strength, diamonds have been used in variety of modern mechanical industries over the years. Scientists are only now just beginning to explore some of the properties in diamonds that may be useful in the next generation of .

It has been understood for some time that nitrogen-vacancy in diamonds holds immense possibility for quantum technologies but now for the first time, researchers have been able to make substantial headway in improving the sensitivity and high dynamic range of the sensors using a single electron spin in an NV centre. The theoretical protocol was developed by Macquarie graduate student Ressa Said and then was experimentally implemented by German team based at Stuttgart and Ulm, primarily by PhD student Gerarld Waldherr from Stuttgart.

“We have demonstrated improved magnetic field sensing and accuracy. This will become even more important for future research into quantum engineering and measurement techniques,” says Twamley.

Read the full paper 'High-dynamic-range magnetometry with a single nuclear spin in diamond' published by Nature Nanotechnology.

Explore further: In-situ nanoindentation study of phase transformation in magnetic shape memory alloys

Provided by Macquarie University

5 /5 (4 votes)

Related Stories

Dark spins light up

Oct 25, 2005

Want to see a diamond? Forget the jewellery store - try a physics laboratory. In the November issue of Nature Physics, Ryan Epstein and colleagues demonstrate the power of their microscope for imaging individual nitrogen ...

Diamonds and the holy grail of quantum computing

Jun 29, 2010

Since Richard Feynman's first envisioned the quantum computer in 1982, there have been many studies of potential candidates -- computers that use quantum bits, or qubits, capable of holding an more than one value at a time ...

The diamond’s quantum memory

Aug 10, 2011

For years, quantum computers have been the holy grail of quantum technology. When a normal computer has to solve a number of problems, it can only execute them one after the other. In contrast, a quantum computer ...

Recommended for you

'Exotic' material is like a switch when super thin

Apr 18, 2014

(Phys.org) —Ever-shrinking electronic devices could get down to atomic dimensions with the help of transition metal oxides, a class of materials that seems to have it all: superconductivity, magnetoresistance ...

User comments : 0

More news stories

Making graphene in your kitchen

Graphene has been touted as a wonder material—the world's thinnest substance, but super-strong. Now scientists say it is so easy to make you could produce some in your kitchen.

Atom probe assisted dating of oldest piece of earth

(Phys.org) —It's a scientific axiom: big claims require extra-solid evidence. So there were skeptics in 2001 when University of Wisconsin-Madison geoscience professor John Valley dated an ancient crystal ...