Autor/es reacciones

Gemma Rius

Tenured Scientist at the Barcelona Institute of Microelectronics (IMB-CNM) of the CSIC and member of the Power Devices and Systems research group

It is perhaps no surprise that the 2025 Nobel Prize in Physics has been awarded for an achievement related to quantum physics, given that 2025 has been declared the International Year of Quantum Science and Technology by UNESCO. It is great news to recognise researchers John Clarke, Michel H. Devoret and John M. Martinis for their work on ‘the discovery of macroscopic quantum tunnelling and energy quantisation in an electrical circuit’.

Their experiments are crucial in demonstrating how these quantum phenomena can be observed in devices that are “large” enough to enable practical manipulation. Specifically, they used superconducting circuits cleverly manufactured on chips, using conventional semiconductor techniques, and measured them under conditions suitable for ensuring that the electrical signals manifested these states in the quantum regime. Many of these challenges have already seen major conceptual and technological advances, as well as alternative implementations.

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