Materials challenges and opportunities for quantum computing hardware

NP De Leon, KM Itoh, D Kim, KK Mehta, TE Northup… - Science, 2021 - science.org
BACKGROUND The past two decades have seen intense efforts aimed at building quantum
computing hardware with the potential to solve problems that are intractable on classical …

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 …

High-fidelity quantum logic gates using trapped-ion hyperfine qubits

CJ Ballance, TP Harty, NM Linke, MA Sepiol… - Physical review …, 2016 - APS
We demonstrate laser-driven two-qubit and single-qubit logic gates with respective fidelities
99.9 (1)% and 99.9934 (3)%, significantly above the≈ 99% minimum threshold level …

Optical atomic clocks

AD Ludlow, MM Boyd, J Ye, E Peik, PO Schmidt - Reviews of Modern Physics, 2015 - APS
Optical atomic clocks represent the state of the art in the frontier of modern measurement
science. In this article a detailed review on the development of optical atomic clocks that are …

Highly charged ions: Optical clocks and applications in fundamental physics

MG Kozlov, MS Safronova… - Reviews of Modern …, 2018 - APS
Recent developments in frequency metrology and optical clocks have been based on
electronic transitions in atoms and singly charged ions as references. The control over all …

Scaling the ion trap quantum processor

C Monroe, J Kim - Science, 2013 - science.org
Trapped atomic ions are standards for quantum information processing, serving as quantum
memories, hosts of quantum gates in quantum computers and simulators, and nodes of …

Single-qubit quantum memory exceeding ten-minute coherence time

Y Wang, M Um, J Zhang, S An, M Lyu, JN Zhang… - Nature …, 2017 - nature.com
A long-time quantum memory capable of storing and measuring quantum information at the
single-qubit level is an essential ingredient for practical quantum computation and …

Ion-trap measurements of electric-field noise near surfaces

M Brownnutt, M Kumph, P Rabl, R Blatt - Reviews of modern Physics, 2015 - APS
Electric-field noise near surfaces is a common problem in diverse areas of physics and a
limiting factor for many precision measurements. There are multiple mechanisms by which …

A molecular approach to quantum sensing

CJ Yu, S Von Kugelgen, DW Laorenza… - ACS central …, 2021 - ACS Publications
The second quantum revolution hinges on the creation of materials that unite atomic
structural precision with electronic and structural tunability. A molecular approach to …

Materials challenges for trapped-ion quantum computers

KR Brown, J Chiaverini, JM Sage… - Nature Reviews Materials, 2021 - nature.com
Trapped-ion quantum information processors store information in atomic ions maintained in
position in free space by electric fields. Quantum logic is enacted through manipulation of …