Quantum Tech

Associate Professor Igor Aharonovich and Professor Milos Toth, photonics researchers at University of Technology Sydney, in collaboration with scientists at MIT, have discovered some of the brightest quantum emitters ever recorded – in hexagonal boron nitride (hBN), a honeycomb structure that mimics graphene. Instead of carbon atoms, however, it is an alternating array of boron and nitrogen atoms.

Caltech applied scientists have developed a way to simulate large-scale motion numerically using the mathematics that govern the universe at the quantum level. The technique, presented at the International Conference and Exhibition on Computer Graphics & Interactive Techniques (SIGGRAPH), held in Anaheim, California, from July 24-28, allows computers to more accurately simulate vorticity, the spinning motion of a flowing fluid.

A research team from Germany, France and Switzerland has realised quantum bits, short qubits, in a new form. One day, they might become the information units of quantum computers. To date, researchers have realised qubits in the form of individual electrons. However, this led to interferences and rendered the information carriers difficult to programme and read. The group has solved this problem by utilising electron holes as qubits, rather ...

Physicists from MIPT and the Russian Quantum Center have developed an easier method to create a universal quantum computer using multilevel qudits, each one of which is able to work with multiple "conventional" qubits. Professor Vladimir Man'ko, Aleksey Fedorov and Evgeny Kiktenko have published the results of their studies of multilevel quantum systems in a series of papers in Physical Review A, Physics Letters A, and also Quantum Measureme...

Yale University scientists have reached a milestone in their efforts to extend the durability and dependability of quantum information. For the first time, researchers at Yale have crossed the "break even" point in preserving a bit of quantum information for longer than the lifetime of its constituent parts. They have created a novel system to encode, spot errors, decode, and correct errors in a quantum bit, also known as a "qubit."

Scientists at the Faculty of Physics, University of Warsaw, have successfully applied concepts of classical holography to the world of quantum phenomena. A new measurement technique has enabled them to register the first ever hologram of a single light particle, thereby shedding new light on the foundations of quantum mechanics. Therefore, they have created the first ever hologram of a single light particle.

Materials researchers at North Carolina State University have fine-tuned a technique that enables them to apply precisely controlled silica coatings to quantum dot nanorods in a day - up to 21 times faster than previous methods. In addition to saving time, the advance means the quantum dots are less likely to degrade, preserving their advantageous optical properties.

Past research has shown heterogeneous silicon-germanium nanowires to be better transistors than their pure silicon counterparts. A team from Michigan Technological University has figured out the most likely reason why. The study, published recently in Nano Letters, focuses on the quantum mechanics in a core-shell nanowire structure. Having a better understanding of the underlying physics could improve efficiency in electronic devices that maximiz...

Physicists from the Russian Quantum Center (RQC), MIPT, the Lebedev Physical Institute, and L'Institut d'Optique (Palaiseau, France) have devised a method for creating a special quantum entangled state. This state enables producing a high-precision ruler capable of measuring large distances to an accuracy of billionths of a metre. The results of the study have been published in Nature Communications.

RMIT quantum computing researchers have developed and demonstrated a method capable of efficiently detecting high-dimensional entanglement. Entanglement in quantum physics is the ability of two or more particles to be related to each other in ways which are beyond what is possible in classical physics. Having information on a particle in an entangled ensemble reveals an "unnatural" amount of information on the other particles.