Forskere har vist at et stort antall kvantebiter, eller qubits, kan stilles inn til å samhandle med hverandre mens de opprettholder koherens i enestående lang tid, i en programmerbar, solid-state superledende prosessor.
Langlivede koherente kvantetilstander i en superledende enhet for kvanteinformasjonsteknologi
Forskere har vært i stand til å demonstrere for første gang at et stort antall kvantebiter, eller qubits, kan stilles inn til å samhandle med hverandre mens de opprettholder sammenheng i enestående lang tid, i en programmerbar, solid-state superledende prosessor. Dette gjennombruddet ble gjort av forskere fra Arizona State University og Zhejiang University i Kina, sammen med to teoretikere fra Storbritannia.
Tidligere var dette bare mulig i Rydberg[{” attribute=””>atom systems.
A qubit, or quantum bit, is a basic unit of quantum information. It is essentially the quantum version of conventional computers’ most basic form of information, the bit.
In a new paper, scientists demonstrated a “first look” at the emergence of quantum many-body scarring (QMBS) states as a robust mechanism for maintaining coherence among interacting qubits. Such exotic quantum states offer the appealing possibility of realizing extensive multipartite entanglement for a variety of applications in quantum information science and technology to achieve high processing speed and low power consumption. The paper, which will be published today (October 13) in the journal DOI: 10.1038/s41567-022-01784-9
Collaborators from the School of Physics and Astronomy, University of Leeds, Leeds, UK, include Jean-Yves Desaules and Zlatko Papic.
Dr. Hekang Li fabricated the device at Zhejiang University. Other collaborators from Zhejiang University, Hangzhou, China, include Pengfei Zhang, Hang Dong, Jiachen Chen, Jinfeng Deng, Bobo Liu, Wenhui Ren, Yunyan Yao, Xu Zhang, Shibo Xu, Ke Wang, Feitong Jin, Xuhao Zhu, and Chao Song.
Additional contributors include Liangtian Zhao and Jie Hao from the Institute of Automation, Chinese Academy of Sciences, Beijing, China and Fangli Liu from QuEra Computing, Boston, MA.