According to Liu Chunwang, a quantum control engineer at China Telecom Quantum Group, photonic quantum computing can operate at room temperature, a key advantage over superconducting systems, which require extreme cold.
It also offers longer coherence times, has lower noise and operating costs, and can directly interface with existing fibre-optic and quantum communication networks, Liu said.
Coherence time is the duration over which a qubit, the fundamental unit of information in quantum computing, retains its quantum properties, and noise refers to various factors that can affect the accuracy of calculations.
China Telecom Quantum Group said that the system can control 2,682 photons, a key metric of its computational capability. In a benchmark test of quantum computing performance, the device completed a high-complexity computation in just 29 microseconds — a task far beyond the reach of classical supercomputers, which would take an estimated 16 billion years to complete.
SANGHA KOMMUNE (SSR) 