429 citations · 2.1k across the 32 of their papers we have counts for
18 papers · 1 filter
Miniaturizing transmon qubits using van der Waals materials
Abhinandan Antony, Martin V. Gustafsson, Guilhem J. Ribeill +8
Quantum computers can potentially achieve an exponential speedup versus classical computers on certain computational tasks, as recently demonstrated in systems of superconducting q…
A universal quantum gate set for transmon qubits with strong ZZ interactions
Junling Long, Tongyu Zhao, Mustafa Bal +13
High-fidelity single- and two-qubit gates are essential building blocks for a fault-tolerant quantum computer. While there has been much progress in suppressing single-qubit gate e…
Characterizing mid-circuit measurements on a superconducting qubit using gate set tomography
Kenneth Rudinger, Guilhem J. Ribeill, Luke C. G. Govia +6
Measurements that occur within the internal layers of a quantum circuit -- mid-circuit measurements -- are an important quantum computing primitive, most notably for quantum error…
Deep Neural Network Discrimination of Multiplexed Superconducting Qubit States
Benjamin Lienhard, Antti Vepsäläinen, Luke C. G. Govia +15
Demonstrating a quantum computational advantage will require high-fidelity control and readout of multi-qubit systems. As system size increases, multiplexed qubit readout becomes a…
Neuromorphic computing with a single qudit
W. D. Kalfus, G. J. Ribeill, G. E. Rowlands +3
Accelerating computational tasks with quantum resources is a widely-pursued goal that is presently limited by the challenges associated with high-fidelity control of many-body quan…
Josephson-junction infrared single-photon detector
Evan D. Walsh, Woochan Jung, Gil-Ho Lee +9
Josephson junctions (JJs) are ubiquitous superconducting devices, enabling high sensitivity magnetometers and voltage amplifiers, as well as forming the basis of high performance c…
High-Fidelity Control of Superconducting Qubits Using Direct Microwave Synthesis in Higher Nyquist Zones
William D. Kalfus, Diana F. Lee, Guilhem J. Ribeill +5
Control electronics for superconducting quantum processors have strict requirements for accurate command of the sensitive quantum states of their qubits. Hinging on the purity of u…
Quantum reservoir computing with a single nonlinear oscillator
L. C. G. Govia, G. J. Ribeill, G. E. Rowlands +2
Realizing the promise of quantum information processing remains a daunting task, given the omnipresence of noise and error. Adapting noise-resilient classical computing modalities…
Real-time decoding of stabilizer measurements in a bit-flip code
Diego Ristè, Luke C. G. Govia, Brian Donovan +5
Although qubit coherence times and gate fidelities are continuously improving, logical encoding is essential to achieve fault tolerance in quantum computing. In most encoding schem…
Cross-resonance interactions between superconducting qubits with variable detuning
Matthew Ware, Blake R. Johnson, Jay M. Gambetta +3
Cross-resonance interactions are a promising way to implement all-microwave two-qubit gates with fixed-frequency qubits. In this work, we study the dependence of the cross-resonanc…
Kinetic Inductance Traveling Wave Amplifiers For Multiplexed Qubit Readout
Leonardo Ranzani, Mustafa Bal, Kin Chung Fong +7
We describe a kinetic inductance traveling-wave (KIT) amplifier suitable for superconducting quantum information measurements and characterize its wideband scattering and noise pro…
Hardware for Dynamic Quantum Computing
Colm A. Ryan, Blake R. Johnson, Diego Ristè +2
We describe the hardware, gateware, and software developed at Raytheon BBN Technologies for dynamic quantum information processing experiments on superconducting qubits. In dynamic…
Demonstration of Robust Quantum Gate Tomography via Randomized Benchmarking
Blake R. Johnson, Marcus P. da Silva, Colm A. Ryan +3
Typical quantum gate tomography protocols struggle with a self-consistency problem: the gate operation cannot be reconstructed without knowledge of the initial state and final meas…
Tomography via Correlation of Noisy Measurement Records
Colm A. Ryan, Blake R. Johnson, Jay M. Gambetta +4
We present methods and results of shot-by-shot correlation of noisy measurements to extract entangled state and process tomography in a superconducting qubit architecture. We show…
Robust Extraction of Tomographic Information via Randomized Benchmarking
Shelby Kimmel, Marcus P. da Silva, Colm A. Ryan +2
We describe how randomized benchmarking can be used to reconstruct the unital part of any trace-preserving quantum map, which in turn is sufficient for the full characterization of…
Characterization of addressability by simultaneous randomized benchmarking
Jay M. Gambetta, A. D. Corcoles, S. T. Merkel +9
The control and handling of errors arising from cross-talk and unwanted interactions in multi-qubit systems is an important issue in quantum information processing architectures. W…
Efficient measurement of quantum gate error by interleaved randomized benchmarking
Easwar Magesan, Jay M. Gambetta, B. R. Johnson +9
We describe a scalable experimental protocol for obtaining estimates of the error rate of individual quantum computational gates. This protocol, in which random Clifford gates are…
Direct Observation of Coherent Population Trapping in a Superconducting Artificial Atom
William R. Kelly, Zachary Dutton, John Schlafer +4
The phenomenon of Coherent Population Trapping (CPT) of an atom (or solid state "artificial atom"), and the associated effect of Electromagnetically Induced Transparency (EIT), are…