According to the Chinese Ministry of Education, SUSTC is a platform to experiment Chinese higher education reform. The governing and management of the university will resemble more to Western universities. The governments of the city of Shenzhen and Guangdong province are also investing heavily in SUSTC. Thus far, SUSTC has 12 departments, 17 academic programs and 26 research centers.
Despite being a public university, SUSTC is administrated by the government of Guangdong province instead of the Chinese Ministry of Education.
RMIT researchers trialling a quantum processor capable of routing information from different locations have found a pathway towards the quantum data bus
RMIT University researchers have trialled a quantum processor capable of routing quantum information from different locations in a critical breakthrough for quantum computing.
The work opens a pathway towards the “quantum data bus”, a vital component of future quantum technologies.
The research team from the Quantum Photonics Laboratory at RMIT in Melbourne, Australia, the Institute for Photonics and Nanotechnologies of the CNR in Italy and the South University of Science and Technology of China, have demonstrated for the first time the perfect state transfer of an entangled quantum bit (qubit) on an integrated photonic device.
Quantum Photonics Laboratory Director Dr Alberto Peruzzo said after more than a decade of global research in the specialised area, the RMIT results were highly anticipated.
“The perfect state transfer has emerged as a promising technique for data routing in large-scale quantum computers,” Peruzzo said.
“The last 10 years has seen a wealth of theoretical proposals but until now it has never been experimentally realised.
“Our device uses highly optimised quantum tunnelling to relocate qubits between distant sites.
“It’s a breakthrough that has the potential to open up quantum computing in the near future.”
The difference between standard computing and quantum computing is comparable to solving problems over an eternity compared to a short time.
“Quantum computers promise to solve vital tasks that are currently unmanageable on today’s standard computers and the need to delve deeper in this area has motivated a worldwide scientific and engineering effort to develop quantum technologies,” Peruzzo said.
“It could make the critical difference for discovering new drugs, developing a perfectly secure quantum Internet and even improving facial recognition.”
Peruzzo said a key requirement for any information technology, along with processors and memories, is the ability to relocate data between locations.
Full scale quantum computers will contain millions, if not billions, of quantum bits (qubits) all interconnected, to achieve computational power undreamed of today.
While today’s microprocessors use data buses that route single bits of information, transferring quantum information is a far greater challenge due to the intrinsic fragility of quantum states.
“Great progress has been made in the past decade, increasing the power and complexity of quantum processors,” Peruzzo said.
Robert Chapman, an RMIT PhD student working on the experiment, said the protocol they developed could be implemented in large scale quantum computing architectures, where interconnection between qubits will be essential.
“We experimentally relocate qubits, encoded in single particles of light, between distant locations,” Chapman said.
“During the protocol, the fragile quantum state is maintained and, critically, entanglement is preserved, which is key for quantum computing.”
‘This unassisted water splitting, which is very rare, does not require expensive or scarce resources.’
Team reports first ‘unassisted’ water splitting using only hematite and silicon as solar absorbers,
Finding an efficient solar water splitting method to mine electron-rich hydrogen for clean power has been thwarted by the poor performance of hematite. But by ‘re-growing’ the mineral’s surface, a smoother version of hematite doubled electrical yield, opening a new door to energy-harvesting artificial photosynthesis, according to a report published online today in the journal Nature Communications.
Re-grown hematite proved to be a better power generating anode, producing a record low turn-on voltage that enabled the researchers to be the first to use earth-abundant hematite and silicon as the sole light absorbers in artificial photosynthesis, said Boston College associate professor of chemistry Dunwei Wang, a lead author of the report.
The new hydrogen harvesting process achieved an overall efficiency of 0.91 percent, a ‘modest’ mark in and of itself, but the first ‘meaningful efficiency ever measured by hematite and amorphous silicon, two of the most abundant elements on Earth,’ the team reported.
‘By simply smoothing the surface characteristics of hematite, this close cousin of rust can be improved to couple with silicon, which is derived from sand, to achieve complete water splitting for solar hydrogen generation,’ said Wang, whose research focuses on discovering new methods to generate clean energy. ‘This unassisted water splitting, which is very rare, does not require expensive or scarce resources.’
Wang said the findings represent an important step toward realizing the potential performance theoretical models have predicted for hematite, an iron oxide similar to rust.
‘This offers new hope that efficient and inexpensive solar fuel production by readily available natural resources is within reach,’ said Wang. ‘Getting there will contribute to a sustainable future powered by renewable energy.’
The team, which included researchers from Boston College, UC Berkeley and China’s University of Science and Technology, decided to focus on hematite’s surface imperfections, which have been found in earlier studies to limit ‘turn-on’ voltage required to jump-start photoelectrochemistry, the central process behind using artificial photosynthesis to capture and store solar energy in hydrogen gas.
The team re-evaluated hematite surface features using a synchrotron particle accelerator at the Lawrence Berkeley National Laboratory. They established a new ‘re-growth’ strategy that applied an acidic solution to the material under intense heat, a process that simultaneously reduced ridges and filled depressions, smoothing the surface.
Tests immediately showed an improvement in turn-on voltage, as well as an increase in photovoltage from 0.24 volts to 0.80 volts, a dramatic increase in power generation.
The team reported that further modifications to the new hematite-silicon method make it amenable to large-scale utilization. Furthermore, the ‘re-growth’ technique may be applicable to other materials under study for additional breakthroughs in artificial photosynthesis.