Noise-resilient Edge Modes on a Chain of Superconducting Qubits
Abstract
Inherent symmetry of a quantum system may protect its otherwise fragile states. Leveraging such protection requires testing its robustness against uncontrolled environmental interactions. Using 47 superconducting qubits, we implement the one-dimensional kicked Ising model which exhibits non-local Majorana edge modes (MEMs) with parity symmetry. Remarkably, we find that any multi-qubit Pauli operator overlapping with the MEMs exhibits a uniform late-time decay rate comparable to single-qubit relaxation rates, irrespective of its size or composition. This characteristic allows us to accurately reconstruct the exponentially localized spatial profiles of the MEMs. Furthermore, the MEMs are found to be resilient against certain symmetry-breaking noise owing to a prethermalization mechanism. Our work elucidates the complex interplay between noise and symmetry-protected edge modes in a solid-state environment.
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@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}
}