Noise-resilient edge modes on a chain of superconducting qubits.
Xiao MiM SonnerM Y NiuK W LeeBrooks FoxenR AcharyaI AleinerT I AndersenF AruteKunal AryaA AsfawJ AtalayaJoseph C BardinJoao BassoAndreas BengtssonG BortoliAlexandre BourassaL BrillM BroughtonBob B BuckleyD A BuellBrian BurkettNicholas BushnellZ ChenB ChiaroRoberto CollinsP ConnerW CourtneyA L CrookD M DebroySean DemuraA DunsworthDaniel EppensC EricksonL FaoroE FarhiR FatemiL FloresE ForatiAustin G FowlerW GiangC GidneyD GilboaM GiustinaA G DauJonathan A GrossS HabeggerMatthew P HarriganM R HoffmannS HongT HuangA HuffW J HugginsL B IoffeS V IsakovJ IvelandE JeffreyZhang JiangC JonesDvir KafriKostyantyn KechedzhiT KhattarSeon KimA Y KitaevP V KlimovA R KlotsA N KorotkovF KostritsaJ M KreikebaumDavid LandhuisP LaptevK-M LauJ LeeL LawsW LiuA LocharlaOrion MartinJarrod R McCleanMatt McEwenB Meurer CostaKevin C MiaoM MohseniS MontazeriA MorvanE MountWojciech MruczkiewiczOfer NaamanMatthew NeeleyCharles NeillM NewmanThomas E O'BrienA OpremcakA PetukhovR PotterC QuintanaNicholas C RubinN SaeiDaniel SankK SankaragomathiKevin J SatzingerC SchusterM J ShearnV ShvartsD StrainY SuMarco SzalayG VidalB VillalongaC Vollgraff-HeidweillerTheodore WhiteZ Jamie YaoPing YehJ YooAdam ZalcmanY ZhangN ZhuHartmut NevenD BaconJ HiltonErik LuceroRyan BabbushSergio BoixoAnthony MegrantYu ChenJ KellyVadim SmelyanskiyD A AbaninPedram RoushanPublished in: Science (New York, N.Y.) (2022)
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 nonlocal Majorana edge modes (MEMs) with [Formula: see text] parity symmetry. We find that any multiqubit 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.