Quantum Tech

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Superconductor may develop the quantum computers of the future

Superconductor may develop the quantum computers of the future
​With their insensitivity to decoherence what are known as Majorana particles could become stable building blocks of a quantum computer. The problem is that they only occur under very special circumstances. Now researchers at Chalmers University of Technology have succeeded in manufacturing a component that is able to host the sought-after particles. ​Researchers throughout the world are struggling to build a quantum computer.
20th February 2018

Silicon qubits and light integrate quantum computing

Silicon qubits and light integrate quantum computing
A silicon-based quantum computing device could be closer than ever due to a new experimental device that demonstrates the potential to use light as a messenger to connect quantum bits of information — known as qubits — that are not immediately adjacent to each other. The feat is a step toward making quantum computing devices from silicon, the same material used in today’s smartphones and computers.
15th February 2018

Crystal clears the path for quantum light

Crystal clears the path for quantum light
Optical highways for light are at the heart of modern communications. But when it comes to guiding individual blips of light called photons, reliable transit is far less common. Now, a collaboration of researchers from the Joint Quantum Institute (JQI), led by JQI Fellows Mohammad Hafezi and Edo Waks, has created a photonic chip that both generates single photons, and steers them around. The device, described in Science, features a way for the quantum light to seamlessly move, unaffected by certain obstacles.
13th February 2018


Race to accelerate development of silicon quantum chip

Race to accelerate development of silicon quantum chip
The worldwide race to create more, better and reliable quantum processors is progressing fast, as a team of TU Delft scientists led by Professor Vandersypen has realised yet again. In a neck-and-neck race with their competitors, they showed that quantum information of an electron spin can be transported to a photon, in a silicon quantum chip. This is important in order to connect quantum bits across the chip and allowing to scale up to large numbers of qubits. Their work was published in the journal Science.
29th January 2018

Quantum physics turned into possible reality

Quantum physics turned into possible reality
ETH physicists have developed a silicon wafer that behaves like a topological insulator when stimulated using ultrasound. They have thereby succeeded in turning an abstract theoretical concept into a macroscopic product. The usual procedure goes like this: you have a complex physical system and attempt to explain its behaviour through as simple a model as possible.
16th January 2018

Quantum dot provides fast light emission and optimised brightness

Quantum dot provides fast light emission and optimised brightness
An international team of researchers from ETH Zurich, IBM Research Zurich, Empa and four American research institutions have found the explanation for why a class of nanocrystals that has been intensively studied in recent years shines in such incredibly bright colours. The nanocrystals contain caesium lead halide compounds that are arranged in a perovskite lattice structure.
11th January 2018

Hybrid quantum network connects different qubits

Hybrid quantum network connects different qubits
Quantum information has been transferred between a cold atomic gas and a solid crystal using photons. The work was done by Nicolas Maring and colleagues at the Institute of Photonic Sciences and the Barcelona Institute of Science and Technology and could lead to significant advances in quantum computing and even the creation of a 'quantum internet'. An important challenge in building a quantum computer is how to transfer quantum bits (qubits) of information between the 'quantum nodes' of a system.
20th December 2017

'Quantum material''s shark-like ability to detect electrical signals

'Quantum material''s shark-like ability to detect electrical signals
A 'quantum material' that mimics a shark's ability to detect the minute electric fields of small prey has been shown to perform well in ocean-like conditions, with potential applications from defense to marine biology. The material maintains its functional stability and does not corrode after being immersed in saltwater, a prerequisite for ocean sensing. Surprisingly, it also functions well in the cold, ambient temperatures typical of seawater, said Shriram Ramanathan, a Purdue professor of materials engineering.
19th December 2017

How to design a silicon quantum computer chip

How to design a silicon quantum computer chip
Research teams all over the world are exploring different ways to design a working computing chip that can integrate quantum interactions. Now, UNSW engineers believe they have cracked the problem, reimagining the silicon microprocessors we know to create a complete design for a quantum computer chip that can be manufactured using mostly standard industry processes and components.
15th December 2017

Silicon structure can control quantum behaviour

Silicon structure can control quantum behaviour
In a step toward making a quantum computer using everyday materials, a team led by researchers at Princeton University has constructed a key piece of silicon hardware capable of controlling quantum behaviour between two electrons with extremely high precision. The study was published in the journal Science. The team constructed a gate that controls interactions between the electrons in a way that allows them to act as the quantum bits of information, or qubits, necessary for quantum computing.
13th December 2017


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