91探花

Skip to content

A team led by scientists and engineers at the 91探花 has announced a significant advancement in developing fault-tolerant qubits for quantum computing. In a pair of papers published June 14 in Nature and June 22 in Science, they report that, in experiments with flakes of semiconductor materials 鈥 each only a single layer of atoms thick 鈥 they detected signatures of 鈥渇ractional quantum anomalous Hall鈥 (FQAH) states. The team鈥檚 discoveries mark a first and promising step in constructing a type of fault-tolerant qubit because FQAH states can host anyons 鈥 strange 鈥渜uasiparticles鈥 that have only a fraction of an electron鈥檚 charge. Some types of anyons can be used to make what are called 鈥渢opologically protected鈥 qubits, which are stable against any small, local disturbances.

Researchers have discovered that light 鈥 from a laser 鈥 can trigger a form of magnetism in a normally nonmagnetic material. This magnetism centers on the behavior of electrons 鈥渟pins,鈥 which have a potential applications in quantum computing. Scientists discovered that electrons within the material became oriented in the same direction when illuminated by photons from a laser. By controlling and aligning electron spins at this level of detail and accuracy, this platform could have applications in quantum computing, quantum simulation and other fields. The experiment, led by scientists at the 91探花, the University of Hong Kong and the Pacific Northwest National Laboratory, was published April 20 in Nature.

In a paper published Sept. 14 in the journal Nature Physics, a team led by the 91探花 reports that carefully constructed stacks of graphene 鈥 a 2D form of carbon 鈥 can exhibit highly correlated electron properties. The team also found evidence that this type of collective behavior likely relates to the emergence of exotic magnetic states.

Scientists have visualized the electronic structure in a microelectronic device for the first time, opening up opportunities for finely tuned, high-performance electronic devices. Physicists from the 91探花 and the University of Warwick developed a technique to measure the energy and momentum of electrons in operating microelectronic devices made of atomically thin 鈥 so-called 2D 鈥 materials.

In a paper published Feb. 25 in the journal Nature, a 91探花-led team of physicists report that it has developed a new system to trap individual excitons 鈥 bound pairs of electrons and their associated positive charges. Their system could form the basis of a novel experimental platform for monitoring excitons with precision and potentially developing new quantum technologies.

In a study published online May 3 in the journal Science, a 91探花-led team announced that it has discovered a method to encode information using magnets that are just a few layers of atoms in thickness. This breakthrough may revolutionize both cloud computing technologies and consumer electronics by enabling data storage at a greater density and improved energy efficiency.

A team led by the 91探花 and the Massachusetts Institute of Technology has for the first time discovered magnetism in the 2-D world of monolayers, or materials that are formed by a single atomic layer. The findings, published June 8 in the journal Nature, demonstrate that magnetic properties can exist even in the 2-D realm 鈥 opening a world of potential applications.

In traditional light-harvesting methods, energy from one photon only excites one electron or none depending on the absorber’s energy gap, transferring just a small portion of light energy into electricity. The remaining energy is lost as heat. But in a paper released May 13 in Science Advances, Wu, 91探花associate professor Xiaodong Xu and colleagues at four other institutions describe one promising approach to coax photons into stimulating multiple electrons. Their method exploits some surprising quantum-level interactions to give one photon multiple potential electron partners.

91探花 scientists have successfully combined two different ultrathin semiconductors 鈥 each just one layer of atoms thick and roughly 100,000 times thinner than a human hair 鈥 to make a new two-dimensional heterostructure with potential uses in clean energy and optically-active electronics.