Researchers from Princeton University and the Joint Quantum Institute (JQI) have developed a “quantum bus” that could enable quantum processors to perform complex computations. The quantum bus provides a link for transferring information between qubits, overcoming a major hurdle in quantum computing.
The JQI is a collaborative institute of the National Institute of Standards and Technology (NIST) and the University of Maryland College Park. Qubits, unlike classical bits, can exist in multiple states simultaneously due to superposition, giving quantum computers an advantage in certain calculations.
However, transferring information between qubits is challenging because quantum states are fragile and short-lived. The Princeton/JQI team’s solution involves a hybrid system that marries spin-orbit qubits and circuit quantum electrodynamics. The spin-orbit qubits enable strong coupling between the spins of electrons and their positions within a quantum dot, allowing information about the qubits’ spin to be transferred to a microwave cavity.
The experiment, which took place at Princeton University, demonstrates a key step towards practical quantum computing by enabling qubits to communicate with each other.
Source: https://www.nist.gov/news-events/news/2012/10/princetonnist-collaboration-puts-wheels-quantum-bus
Keywords: Quantum, Spin, Qubits, Coupling, Photons
