Anthony Ransford [1], M. S. Allman, Jake Arkinstall [2,1], J. P. Campora, Samuel F. Cooper [1], Robert D. Delaney [1], Joan M. Dreiling [1], Brian Estey [1], Caroline Figgatt [1], Alex Hall [1], Ali A. Husain [3], Akhil Isanaka [1], Colin J. Kennedy [1], Nikhil Kotibhaskar [4], Ivaylo S. Madjarov [1], Karl Mayer [1], Alistair R. Milne [4], Annie J. Park [1], Adam P. Reed [1], Riley Ancona [1], Molly P. Andersen [5], Pablo Andres-Martinez [2], Will Angenent [2], Liz Argueta [1], Benjamin Arkin [1], Leonardo Ascarrunz [1], William Baker [1], Corey Barnes [1], John Bartolotta [1], Jordan Berg [1], Ryan Besand [1], Bryce Bjork [1], Matt Blain [5], Paul Blanchard [1], Robin Blume-Kohout [6], Matt Bohn [1,2], Agustin Borgna, Daniel Y. Botamanenko [1], Robert Boutelle [1], Natalie Brown [1], Grant T. Buckingham [1], Nathaniel Q. Burdick [3], William Cody Burton [1], Varis Carey [1], Christopher J. Carron [5], Joe Chambers [1], John Children [2], Victor E. Colussi [1], Steven Crepinsek [1], Andrew Cureton [1], Joe Davies [5], Daniel Davis [1], Matthew DeCross [1], David Deen [3], Conor Delaney [1], Davide DelVento [1], B. J. DeSalvo, Jason Dominy [1], Ross Duncan [7], Vanya Eccles [2], Alec Edgington [2], Neal Erickson [1], Stephen Erickson [1], Christopher T. Ertsgaard [5], Bruce Evans [1], Tyler Evans [1], Maya I. Fabrikant [1], Andrew Fischer [1], Cameron Foltz [1], Michael Foss-Feig [1], David Francois [1], Brad Freyberg [1], Charles Gao [1], Robert Garay [1], Jane Garvin [1], David M. Gaudiosi [1], Christopher N. Gilbreth [1], Josh Giles [1], Erin Glynn [1], Jeff Graves [1], Azure Hansen [1], David Hayes [1], Lukas Heidemann [2], Bob Higashi [5], Tyler Hilbun [1], Jordan Hines [6], Ariana Hlavaty [2], Kyle Hoffman [1], Ian M. Hoffman [1], Craig Holliman [7], Isobel Hooper [2], Bob Horning [5], James Hostetter [3], Daniel Hothem [8], Jack Houlton [1], Jared Hout [1], Ross Hutson [1], Ryan T. Jacobs [1], Trent Jacobs [1], Melf Johannsen [2], Jacob Johansen [1], Loren Jones [1], Sydney Julian [1], Ryan Jung [5], Aidan Keay [2], Todd Klein [5], Mark Koch [2], Ryo Kondo [1], Chang Kong [1], Asa Kosto [1], Alan Lawrence [2], David Liefer [1], Michelle Lollie [1], Dominic Lucchetti [1], Nathan K. Lysne [7], Christian Lytle [1], Callum MacPherson [2], Andrew Malm [1], Spencer Mather [1], Brian Mathewson [1], Daniel Maxwell [3], Lauren McCaffrey [1], Hannah McDougall [1], Robin Mendoza [1], Michael Mills [1], Richard Morrison [2], Louis Narmour [1], Nhung Nguyen [1], Lora Nugent [1], Scott Olson [5], Daniel Ouellette [5], Jeremy Parks [1], Zach Peters [1], Jessie Petricka [1], Juan M. Pino [1], Frank Polito [1], Matthias Preidl [5], Gabriel Price [1], Timothy Proctor [8], McKinley Pugh [1], Noah Ratcliff [1], Daisy Raymondson [1], Peter Rhodes [1], Conrad Roman [1], Craig Roy [2], Ciaran Ryan-Anderson [1], Fernando Betanzo Sanchez [2], George Sangiolo [2], Tatiana Sawadski [2], Andrew Schaffer [3], Peter Schow [1], Jon Sedlacek [3], Henry Semenenko [2], Peter Shevchuk [1], Susan Shore [5], Peter Siegfried [1], Kartik Singhal [1], Seyon Sivarajah [2], Thomas Skripka [1], Lucas Sletten [3], Ben Spaun [1], R. Tucker Sprenkle [1], Paul Stoufer [1], Mariel Tader [1], Stephen F. Taylor [3], Travis H. Thompson [2], Raanan Tobey [1], Anh Tran [1], Tam Tran [1], Grahame Vittorini [3], Curtis Volin [3], Jim Walker [1], Sam White [2], Douglas Wilson [2], Quinn Wolf [1], Chester Wringe [2], Kevin Young [8], Jian Zheng [1], Kristen Zuraski [1], Charles H. Baldwin [1], Alex Chernoguzov [1], John P. Gaebler [1], Steven J. Sanders [1], Brian Neyenhuis [1], Russell Stutz [1], Justin G. Bohnet [1]
Abstract
We report on Quantinuum Helios, a 98-qubit trapped-ion quantum processor based on the quantum charge-coupled device (QCCD) architecture. Helios features $^{137}$Ba$^{+}$ hyperfine qubits, all-to-all connectivity enabled by a rotatable ion storage ring connecting two quantum operation regions by a junction, speed improvements from parallelized operations, and a new software stack with real-time compilation of dynamic programs. Averaged over all operational zones in the system, we achieve average infidelities of $2.5(1)\times10^{-5}$ for single-qubit gates, $7.9(2)\times10^{-4}$ for two-qubit gates, and $4.8(6)\times10^{-4}$ for state preparation and measurement, none of which are fundamentally limited and likely able to be improved. These component infidelities are predictive of system-level performance in both random Clifford circuits and random circuit sampling, the latter demonstrating that Helios operates well beyond the reach of classical simulation and establishes a new frontier of fidelity and complexity for quantum computers.