Phys.org August 5, 2021
A team of researchers in the US (University of Maryland, University of Colorado) designed a quantum protocol that reaches the theoretical speed limits for certain quantum tasks. In the new protocol, data stored on one qubit is shared with its neighbors using entanglement. The qubits work together to spread it to other sets of qubits. Because more qubits are involved, they transfer the information even more quickly. This process can be repeated to generate larger blocks of qubits that pass the information faster and faster. They found that the snowballing qubits speed along the information at the theoretical limits allowed by physics. They realized that using blocks of qubits to move information would enhance a protocol’s speed. The mathematical results reveal new information about how large a quantum computation needs to be to simulate particles with interactions like those of the qubits in the new protocol…read more. Open Access TECHNICAL ARTICLEÂ
In a new quantum protocol, groups of quantum entangled qubits (red dots) recruit more qubits (blue dots) at each step to help rapidly move information from one spot to another… Credit: Minh Tran/JQI