Quantum phases of matter on a 256-atom programmable quantum simulator

S Ebadi, TT Wang, H Levine, A Keesling, G Semeghini… - Nature, 2021 - nature.com
Motivated by far-reaching applications ranging from quantum simulations of complex
processes in physics and chemistry to quantum information processing, a broad effort is …

Rydberg quantum wires for maximum independent set problems

M Kim, K Kim, J Hwang, EG Moon, J Ahn - Nature Physics, 2022 - nature.com
One application of near-term quantum computing devices,,–is to solve combinatorial
optimization problems such as non-deterministic polynomial-time hard problems,,–. Here we …

Defect-free assembly of 2D clusters of more than 100 single-atom quantum systems

D Ohl de Mello, D Schäffner, J Werkmann… - Physical review …, 2019 - APS
We demonstrate the defect-free assembly of versatile target patterns of up 111 neutral
atoms, building on a 361-site subset of a micro-optical architecture that readily provides …

Defect-free arbitrary-geometry assembly of mixed-species atom arrays

C Sheng, J Hou, X He, K Wang, R Guo, J Zhuang… - Physical Review Letters, 2022 - APS
Optically trapped mixed-species single atom arrays with arbitrary geometry are an attractive
and promising platform for various applications, because tunable quantum systems with …

Quantum computing with Rydberg atom graphs

M Kim, J Ahn, Y Song, J Moon, H Jeong - Journal of the Korean Physical …, 2023 - Springer
In recent years, Rydberg atom graphs, which are the arrangement of atoms of which the
interaction through Rydberg state excitation can be represented by a mathematical graph …

Gray-molasses optical-tweezer loading: controlling collisions for scaling atom-array assembly

MO Brown, T Thiele, C Kiehl, TW Hsu, CA Regal - Physical Review X, 2019 - APS
To isolate individual neutral atoms in microtraps, experimenters have long harnessed
molecular photoassociation to make atom distributions sub-Poissonian. While a variety of …

Detailed balance of thermalization dynamics in Rydberg-atom quantum simulators

H Kim, YJ Park, K Kim, HS Sim, J Ahn - Physical review letters, 2018 - APS
Dynamics of large complex systems, such as relaxation towards equilibrium in classical
statistical mechanics, often obeys a master equation that captures essential information from …

Complex density wave orders and quantum phase transitions in a model of square-lattice Rydberg atom arrays

R Samajdar, WW Ho, H Pichler, MD Lukin… - Physical Review Letters, 2020 - APS
We describe the zero-temperature phase diagram of a model of a two-dimensional square-
lattice array of neutral atoms, excited into Rydberg states and interacting via strong van der …

Optical tweezers throw and catch single atoms

H Hwang, A Byun, J Park, S de Léséleuc, J Ahn - Optica, 2023 - opg.optica.org
Single atoms movable from one place to another would enable a flying quantum memory
that can be useful for dynamic quantum computing architectures. Guided atoms, eg, by …

Enhanced atom-by-atom assembly of arbitrary tweezer arrays

KN Schymik, V Lienhard, D Barredo, P Scholl… - Physical Review A, 2020 - APS
We report on improvements extending the capabilities of the atom-by-atom assembler
described by Barredo et al.[Science 354, 1021 (2016) SCIEAS 0036-8075 10.1126/science …