Trapped-ion quantum computing: Progress and challenges

CD Bruzewicz, J Chiaverini, R McConnell… - Applied Physics …, 2019 - pubs.aip.org
Trapped ions are among the most promising systems for practical quantum computing (QC).
The basic requirements for universal QC have all been demonstrated with ions, and …

Composite laser-pulses spectroscopy for high-accuracy optical clocks: a review of recent progress and perspectives

T Zanon-Willette, R Lefevre, R Metzdorff… - Reports on Progress …, 2018 - iopscience.iop.org
Probing an atomic resonance without disturbing it is an ubiquitous issue in physics. This
problem is critical in high-accuracy spectroscopy or for the next generation of atomic optical …

Parallel entangling operations on a universal ion-trap quantum computer

C Figgatt, A Ostrander, NM Linke, KA Landsman, D Zhu… - Nature, 2019 - nature.com
The circuit model of a quantum computer consists of sequences of gate operations between
quantum bits (qubits), drawn from a universal family of discrete operations. The ability to …

Demonstration of fidelity improvement using dynamical decoupling with superconducting qubits

B Pokharel, N Anand, B Fortman, DA Lidar - Physical review letters, 2018 - APS
Quantum computers must be able to function in the presence of decoherence. The simplest
strategy for decoherence reduction is dynamical decoupling (DD), which requires no …

Assessing the progress of trapped-ion processors towards fault-tolerant quantum computation

A Bermudez, X Xu, R Nigmatullin, J O'Gorman… - Physical Review X, 2017 - APS
A quantitative assessment of the progress of small prototype quantum processors towards
fault-tolerant quantum computation is a problem of current interest in experimental and …

Reduced sensitivity to charge noise in semiconductor spin qubits via symmetric operation

MD Reed, BM Maune, RW Andrews, MG Borselli… - Physical review …, 2016 - APS
We demonstrate improved operation of exchange-coupled semiconductor quantum dots by
substantially reducing the sensitivity of exchange operations to charge noise. The method …

Optimized quantum compilation for near-term algorithms with openpulse

P Gokhale, A Javadi-Abhari, N Earnest… - 2020 53rd Annual …, 2020 - ieeexplore.ieee.org
Quantum computers are traditionally operated by programmers at the granularity of a gate-
based instruction set. However, the actual device-level control of a quantum computer is …

99.92%-Fidelity cnot Gates in Solids by Noise Filtering

T Xie, Z Zhao, S Xu, X Kong, Z Yang, M Wang… - Physical Review Letters, 2023 - APS
Inevitable interactions with the reservoir largely degrade the performance of entangling
gates, which hinders practical quantum computation from coming into existence. Here, we …

Methodology of resonant equiangular composite quantum gates

GH Low, TJ Yoder, IL Chuang - Physical Review X, 2016 - APS
The creation of composite quantum gates that implement quantum response functions U^(θ)
dependent on some parameter of interest θ is often more of an art than a science. Through …

Experimental noise filtering by quantum control

A Soare, H Ball, D Hayes, J Sastrawan, MC Jarratt… - Nature Physics, 2014 - nature.com
Extrinsic interference is routinely faced in systems engineering, and a common solution is to
rely on a broad class of filtering techniques to afford stability to intrinsically unstable systems …