| Oct 05, 2023 |
|
(Nanowerk Information) Researchers on the IBS Middle for Quantum Nanoscience (QNS) at Ewha Womans College have achieved a groundbreaking step ahead in quantum info science. In partnership with groups from Japan, Spain, and the US, they created a novel electron-spin qubit platform, assembled atom-by-atom on a floor.
|
|
This breakthrough was printed within the journal Science (“An atomic-scale multi-qubit platform”).
|
|
In contrast to earlier atomic quantum units on surfaces the place solely a single qubit may very well be managed, the researchers at QNS efficiently demonstrated the power to manage a number of qubits concurrently, enabling the applying of single-, two-, and three-qubit gates.
|
 |
| The STM tip (Fe) operates the sensor qubit and romote qubits which creates the brand new a number of qubit platform. (Picture: Institute for Primary Science)
|
|
Qubits, the elemental items of quantum info, are key to quantum purposes resembling quantum computing, sensing, and communication. PHARK Soo-hyon, one of many QNS principal investigators, highlights the importance of this challenge. “To this point, scientists have solely been in a position to create and management a single qubit on a floor, making this a serious step ahead in the direction of multi-qubit programs,” he said.
|
|
Led by BAE Yujeong, PHARK Soo-hyon, and director Andreas HEINRICH, QNS developed this novel platform, which consists of particular person magnetic atoms positioned on a pristine floor of a skinny insulator. These atoms will be exactly positioned utilizing the tip of a scanning tunneling microscope (STM) and manipulated with the help of electron spin resonance (ESR-STM). This atomic-scale management has allowed researchers to control quantum states coherently. Additionally they established the potential for controlling distant qubits, opening the trail to scaling as much as tens or a whole lot of qubits in a defect-free surroundings.
|
|
BAE Yujeong identified, “It’s actually superb that we will now management the quantum states of a number of particular person atoms on surfaces on the identical time”. The atomic-scale precision of this platform permits for the distant manipulation of the atoms to carry out qubit operations individually, with out shifting the tip of the STM.
|
|
This analysis marks a big departure from different qubit platforms, resembling photonic units, ion and atom traps, and superconducting units. One of many distinctive advantages of this surface-based electron-spin strategy is the myriad of obtainable spin species and the huge number of two-dimensional geometries that may be exactly assembled.
|
|
Wanting ahead, the researchers anticipate quantum sensing, computation, and simulation protocols utilizing these exactly assembled atomic architectures. Altogether, the work by the QNS researchers is predicted to usher in a brand new period of atomic-scale management in quantum info science, cementing Korea’s place as a worldwide chief within the discipline.
|
