The ruthenium oxide thermometer develoepd by QuantumCTek Co

A high-performance anti-interference ruthenium oxide thermometer used in quantum computing independently developed by a Chinese company set a new national record for temperature measuring, the Global Times learnt from Anhui Quantum Computing Engineering Research Center on Sunday.

Developed by QuantumCTek Co, a quantum information technology firm, the product has an initial temperature measurement capability close to 6 millikelvin, marking China's superconducting quantum computing measurement technology in ultra-low temperature reaching world-class level.

"The successful development of the quantum ruthenium oxide thermometer will further enhance the independent controllability of China's superconducting quantum computing industry chain," Wang Zhehui, deputy director of Anhui Quantum Computing Engineering Research Center, told the Global Times on Sunday.

The ruthenium oxide thermometer is one of the core components of a quantum computer, which is used for measuring the operating temperature of quantum computing chips. Quantum computing chips need to operate under "absolute zero" conditions, about -273.15 C, where even the slightest temperature fluctuation can result in the loss of quantum information.

Li Xu, a quantum computing expert from QuantumCTek, told the Global Times that the ruthenium oxide thermometer could precisely monitor the operating temperature of quantum computing chips, and this is crucial for ensuring the stable operation of quantum computers and improving the accuracy and reliability of computations.

Previously, China's ruthenium oxide thermometers mainly relied on imports, and there were no domestically produced alternatives capable of measuring temperatures below 10 millikelvin.

The newly launched domestically produced thermometer has a temperature measuring range from 6 to 200 millikelvin, setting a new national record for the lowest initial temperature measurement. Additionally, it also features high measurement accuracy and sensitivity, enabling continuous measurement and rapid response.

Global Times