超导量子比特链上抗噪声的边缘模式
量子物理
2022-12-12 v2 介观与纳米尺度物理
其他凝聚态物理
摘要
量子系统固有的对称性可保护其原本脆弱的态。利用此类保护需检验其针对不受控环境相互作用的鲁棒性。我们利用 47 个超导量子比特实现了一维受驱 Ising 模型，该模型展现出具有 宇称对称性的非局域 Majorana 边缘模式（MEMs）。值得注意的是，我们发现任何与 MEMs 重叠的多量子比特 Pauli 算符均呈现均匀的后期衰减率，可与单量子比特弛豫率相比，且与其规模或构成无关。该特性使我们能精确重构 MEMs 的指数局域空间分布。此外，由于预热化机制，MEMs 对某些破缺对称性的噪声表现出韧性。我们的工作阐明了固态环境中噪声与对称性保护边缘模式之间的复杂相互作用。
引用
@article{arxiv.2204.11372,
title = {Noise-resilient Edge Modes on a Chain of Superconducting Qubits},
author = {Xiao Mi and Michael Sonner and Murphy Yuezhen Niu and Kenneth W. Lee and Brooks Foxen and Rajeev Acharya and Igor Aleiner and Trond I. Andersen and Frank Arute and Kunal Arya and Abraham Asfaw and Juan Atalaya and Ryan Babbush and Dave Bacon and Joseph C. Bardin and Joao Basso and Andreas Bengtsson and Gina Bortoli and Alexandre Bourassa and Leon Brill and Michael Broughton and Bob B. Buckley and David A. Buell and Brian Burkett and Nicholas Bushnell and Zijun Chen and Benjamin Chiaro and Roberto Collins and Paul Conner and William Courtney and Alexander L. Crook and Dripto M. Debroy and Sean Demura and Andrew Dunsworth and Daniel Eppens and Catherine Erickson and Lara Faoro and Edward Farhi and Reza Fatemi and Leslie Flores and Ebrahim Forati and Austin G. Fowler and William Giang and Craig Gidney and Dar Gilboa and Marissa Giustina and Alejandro Grajales Dau and Jonathan A. Gross and Steve Habegger and Matthew P. Harrigan and Jeremy Hilton and Markus Hoffmann and Sabrina Hong and Trent Huang and Ashley Huff and William J. Huggins and Lev B. Ioffe and Sergei V. Isakov and Justin Iveland and Evan Jeffrey and Zhang Jiang and Cody Jones and Dvir Kafri and Kostyantyn Kechedzhi and Tanuj Khattar and Seon Kim and Alexei Kitaev and Paul V. Klimov and Andrey R. Klots and Alexander N. Korotkov and Fedor Kostritsa and J. M. Kreikebaum and David Landhuis and Pavel Laptev and Kim-Ming Lau and Joonho Lee and Lily Laws and Wayne Liu and Aditya Locharla and Erik Lucero and Orion Martin and Jarrod R. McClean and Matt McEwen and Bernardo Meurer Costa and Kevin C. Miao and Masoud Mohseni and Shirin Montazeri and Alexis Morvan and Emily Mount and Wojciech Mruczkiewicz and Ofer Naaman and Matthew Neeley and Charles Neill and Michael Newman and Thomas E. O'Brien and Alex Opremcak and Andre Petukhov and Rebecca Potter and Chris Quintana and Nicholas C. Rubin and Negar Saei and Daniel Sank and Kannan Sankaragomathi and Kevin J. Satzinger and Christopher Schuster and Michael J. Shearn and Vladimir Shvarts and Doug Strain and Yuan Su and Marco Szalay and Guifre Vidal and Benjamin Villalonga and Catherine Vollgraff-Heidweiller and Theodore White and Z. Jamie Yao and Ping Yeh and Juhwan Yoo and Adam Zalcman and Yaxing Zhang and Ningfeng Zhu and Hartmut Neven and Sergio Boixo and Anthony Megrant and Yu Chen and Julian Kelly and Vadim Smelyanskiy and Dmitry A. Abanin and Pedram Roushan},
journal= {arXiv preprint arXiv:2204.11372},
year = {2022}
}