P
Peter O'Malley
Researcher at University of California, Santa Barbara
Publications - 64
Citations - 12003
Peter O'Malley is an academic researcher from University of California, Santa Barbara. The author has contributed to research in topics: Qubit & Quantum computer. The author has an hindex of 42, co-authored 64 publications receiving 9924 citations. Previous affiliations of Peter O'Malley include University of California, Berkeley & Haverford College.
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Journal ArticleDOI
Superconducting quantum circuits at the surface code threshold for fault tolerance
Rami Barends,Julian Kelly,A. Megrant,Andrzej Veitia,Daniel Sank,Evan Jeffrey,Ted White,Josh Mutus,Austin G. Fowler,Brooks Campbell,Yu Chen,Zijun Chen,Benjamin Chiaro,Andrew Dunsworth,Charles Neill,Peter O'Malley,Pedram Roushan,Amit Vainsencher,James Wenner,Alexander N. Korotkov,Andrew Cleland,John M. Martinis +21 more
TL;DR: The results demonstrate that Josephson quantum computing is a high-fidelity technology, with a clear path to scaling up to large-scale, fault-tolerant quantum circuits.
Journal ArticleDOI
State preservation by repetitive error detection in a superconducting quantum circuit
Julian Kelly,Rami Barends,Austin G. Fowler,A. Megrant,Evan Jeffrey,Ted White,Daniel Sank,Josh Mutus,Brooks Campbell,Yu Chen,Zijun Chen,Benjamin Chiaro,Andrew Dunsworth,Io-Chun Hoi,Charles Neill,Peter O'Malley,Chris Quintana,Pedram Roushan,Amit Vainsencher,James Wenner,Andrew Cleland,John M. Martinis +21 more
TL;DR: The protection of classical states from environmental bit-flip errors is reported and the suppression of these errors with increasing system size is demonstrated, motivating further research into the many challenges associated with building a large-scale superconducting quantum computer.
Journal ArticleDOI
Scalable Quantum Simulation of Molecular Energies
Peter O'Malley,Ryan Babbush,Ian D. Kivlichan,Jonathan Romero,Jarrod R. McClean,Rami Barends,Julian Kelly,Pedram Roushan,Andrew Tranter,Andrew Tranter,Nan Ding,Brooks Campbell,Yu Chen,Zijun Chen,Ben Chiaro,Andrew Dunsworth,Austin G. Fowler,Evan Jeffrey,Anthony Megrant,Josh Mutus,Charles Neil,Chris Quintana,Daniel Sank,Ted White,James Wenner,Amit Vainsencher,Peter V. Coveney,Peter J. Love,Hartmut Neven,Alán Aspuru-Guzik,John M. Martinis,John M. Martinis +31 more
TL;DR: In this paper, the first electronic structure calculation performed on a quantum computer without exponentially costly precompilation is reported, where a programmable array of superconducting qubits is used to compute the energy surface of molecular hydrogen using two distinct quantum algorithms.
Journal ArticleDOI
Coherent Josephson qubit suitable for scalable quantum integrated circuits.
Rami Barends,Julian Kelly,A. Megrant,Daniel Sank,Evan Jeffrey,Yu Chen,Yi Yin,Ben Chiaro,Josh Mutus,Charles Neill,Peter O'Malley,Pedram Roushan,James Wenner,Ted White,Andrew Cleland,John M. Martinis +15 more
TL;DR: This work demonstrates a planar, tunable superconducting qubit with energy relaxation times up to 44 μs and finds a fine structure in the qubit energy lifetime as a function of frequency, indicating the presence of a sparse population of incoherent, weakly coupled two-level defects.
Journal ArticleDOI
Scalable Quantum Simulation of Molecular Energies
Peter O'Malley,Ryan Babbush,Ian D. Kivlichan,Jonathan Romero,Jarrod R. McClean,Rami Barends,Julian Kelly,Pedram Roushan,Andrew Tranter,Nan Ding,Brooks Campbell,Yu Chen,Zijun Chen,Benjamin Chiaro,Andrew Dunsworth,Austin G. Fowler,Evan Jeffrey,Anthony Megrant,Josh Mutus,Charles Neill,Chris Quintana,Daniel Sank,Amit Vainsencher,James Wenner,Ted White,Peter V. Coveney,Peter J. Love,Hartmut Neven,Alán Aspuru-Guzik,John M. Martinis +29 more
TL;DR: In this article, the first electronic structure calculation performed on a quantum computer without exponentially costly precompilation is reported, where a programmable array of superconducting qubits is used to compute the energy surface of molecular hydrogen using two distinct quantum algorithms.