Quantum simulation of fundamental particles and forces

CW Bauer, Z Davoudi, N Klco, MJ Savage - Nature Reviews Physics, 2023 - nature.com
Key static and dynamic properties of matter—from creation in the Big Bang to evolution into
subatomic and astrophysical environments—arise from the underlying fundamental …

Entanglement-based quantum information technology: a tutorial

Z Zhang, C You, OS Magaña-Loaiza… - Advances in Optics …, 2024 - opg.optica.org
Entanglement is a quintessential quantum mechanical phenomenon with no classical
equivalent. First discussed by Einstein, Podolsky, and Rosen and formally introduced by …

Multi-qubit gates and Schrödinger cat states in an optical clock

A Cao, WJ Eckner, T Lukin Yelin, AW Young… - Nature, 2024 - nature.com
Many-particle entanglement is a key resource for achieving the fundamental precision limits
of a quantum sensor. Optical atomic clocks, the current state of the art in frequency precision …

Realizing spin squeezing with Rydberg interactions in an optical clock

WJ Eckner, N Darkwah Oppong, A Cao, AW Young… - Nature, 2023 - nature.com
Neutral-atom arrays trapped in optical potentials are a powerful platform for studying
quantum physics, combining precise single-particle control and detection with a range of …

Entanglement of trapped-ion qubits separated by 230 meters

V Krutyanskiy, M Galli, V Krcmarsky, S Baier… - Physical Review Letters, 2023 - APS
We report on an elementary quantum network of two atomic ions separated by 230 m. The
ions are trapped in different buildings and connected with 520 (2) m of optical fiber. At each …

Quantum-enhanced sensing on optical transitions through finite-range interactions

J Franke, SR Muleady, R Kaubruegger, F Kranzl… - Nature, 2023 - nature.com
The control over quantum states in atomic systems has led to the most precise optical atomic
clocks so far,–. Their sensitivity is bounded at present by the standard quantum limit, a …

Universal quantum operations and ancilla-based read-out for tweezer clocks

R Finkelstein, RBS Tsai, X Sun, P Scholl, S Direkci… - Nature, 2024 - nature.com
Enhancing the precision of measurements by harnessing entanglement is a long-sought
goal in quantum metrology,. Yet attaining the best sensitivity allowed by quantum theory in …

Image sensing with multilayer nonlinear optical neural networks

T Wang, MM Sohoni, LG Wright, MM Stein, SY Ma… - Nature …, 2023 - nature.com
Optical imaging is commonly used for both scientific and technological applications across
industry and academia. In image sensing, a measurement, such as of an object's position or …

Ytterbium nuclear-spin qubits in an optical tweezer array

A Jenkins, JW Lis, A Senoo, WF McGrew, AM Kaufman - Physical Review X, 2022 - APS
We report on the realization of a fast, scalable, and high-fidelity qubit architecture, based on
Yb 171 atoms in an optical tweezer array. We demonstrate several attractive properties of …

Direct comparison of two spin-squeezed optical clock ensembles at the 10−17 level

JM Robinson, M Miklos, YM Tso, CJ Kennedy… - Nature Physics, 2024 - nature.com
Building scalable quantum systems that demonstrate performance enhancement based on
entanglement is a major goal in quantum computing and metrology. The main challenge …