Single ion qubit with estimated coherence time exceeding one hour

• Published in: Nature communications Vol. 12; no. 1; pp. 233 - 8
• Main Authors: Wang, Pengfei, Luan, Chun-Yang, Qiao, Mu, Um, Mark, Zhang, Junhua, Wang, Ye, Yuan, Xiao, Gu, Mile, Zhang, Jingning, Kim, Kihwan
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 11.01.2021; Nature Publishing Group; Nature Portfolio
• Subjects: 140/125; 140/133; 639/624/400/482; 639/766/36/1121; 639/766/483/2802; 639/766/483/481; Computer engineering; Cooling; Crystal oscillators; Data processing; Decoupling; Fluctuations; Frequency stability; Humanities and Social Sciences; Information processing; Information science; Lasers; Leakage; Magnetic fields; multidisciplinary; Noise; Quantum phenomena; Qubits (quantum computing); Resource development; Science; Science (multidisciplinary); Time constant; Tomography
• ISSN: 2041-1723; 2041-1723
• DOI: 10.1038/s41467-020-20330-w

Realizing a long coherence time quantum memory is a major challenge of current quantum technology. Until now, the longest coherence-time of a single qubit was reported as 660 s in a single 171 Yb + ion-qubit through the technical developments of sympathetic cooling and dynamical decoupling pulses, w...