Studying Quantum Entanglement

 


Scientists at Berkeley lab and several other facilities have competently shown a new approach to discover innovative materials for quantum uses. This study was originally published in nature communications.

Ultra fast computing is used to estimate the effects of hundreds of materials at a time. This provided a quick route to choosing materials based on their properties.

Alex Weber-Bargioni , a Berkeley research scientist Reports “ In our approach, theoretical screening guides the targeted use of atomic scale fabrication.” He goes on to say, “ Together these methods open the door for researchers to accelerate the discovery of quantum materials with specific functionalities that will revolutionize computing, telecommunications, and sensors.” 

Quantum research involves studying atomic scale reactions to process, transmit and encode information. One way to control the information is to create defects in materials. Further, these defects can be joined in the systems that enable quantum applications.

A Dartmouth researcher on the project named Geoffrey Hautier states, “ For defects to work for quantum applications, they need to have very specific electronic properties and structures. . . They should preferably, be able to absorb and emit light with wavelengths or in the visible telecommunications range.”

The defects with quantum properties are hard to locate. Sinead Griffin also Is a Berkeley lab scientist, quoted as saying, “ Consider the material tungsten disulfide (ws2). . . If you account for the dozens of periodic table elements that could be inserted into this material and all the possible Atomic locations of the insertion, there are hundreds of possible defects that could be made. Looking beyond ws2, If you consider thousands of possible materials for defects, there are literally infinite possibilities.” 

Quantum defects were originally discovered by mistake. Traditionally defects are discovered one at a time. When the reactions and properties are not visible, they repeat the process searching for a new defect. When a good defect is found, Then the researchers ask why the properties are considered good. Several decades would be wasted, exploring the possible defects in ws2, If the research is completed in the old-fashion. 

The team changed up strategy in a familiar way, starting with a theory and then starting experiments. The idea is that theoretical computations will help guide the scientists to a much smaller more promising group of defect candidates.

Most importantly, Scientists have begun a defect research community. The goal is to encourage researchers around the world to add their data and help build a database of defects and their properties.

The team uses a scanning tunneling microscope to locate identical defects. It is important for defects to interact with quantum applications, known as quantum entanglement. 

The researchers plan on using their computation fabrication method to identify other high-performance defects. 

Weber-Bargioni surmises “ We have built ourselves, a huge materials playground for us to play in.” 

The future is wide open for research and into quantum entanglement!!! 

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