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 …

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 …

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 …

Long-lived Bell states in an array of optical clock qubits

N Schine, AW Young, WJ Eckner, MJ Martin… - Nature Physics, 2022 - nature.com
The generation of long-lived entanglement in optical atomic clocks is one of the main goals
of quantum metrology. Arrays of neutral atoms, where Rydberg-based interactions may …

Enhanced metrology at the critical point of a many-body Rydberg atomic system

DS Ding, ZK Liu, BS Shi, GC Guo, K Mølmer… - Nature Physics, 2022 - nature.com
Interacting many-body systems display enhanced sensitivity close to critical transition points
due to diverging quantum fluctuations. This criticality-based enhancement has been …

Entanglement-enhanced matter-wave interferometry in a high-finesse cavity

GP Greve, C Luo, B Wu, JK Thompson - Nature, 2022 - nature.com
An ensemble of atoms can operate as a quantum sensor by placing atoms in a
superposition of two different states. Upon measurement of the sensor, each atom is …

Random unitaries in extremely low depth

T Schuster, J Haferkamp, HY Huang - arxiv preprint arxiv:2407.07754, 2024 - arxiv.org
We prove that random quantum circuits on any geometry, including a 1D line, can form
approximate unitary designs over $ n $ qubits in $\log n $ depth. In a similar manner, we …

Einstein-podolsky-rosen experiment with two bose-einstein condensates

P Colciaghi, Y Li, P Treutlein, T Zibold - Physical Review X, 2023 - APS
In 1935, Einstein, Podolsky, and Rosen (EPR) conceived a gedanken experiment which
became a cornerstone of quantum technology and still challenges our understanding of …

Tunable itinerant spin dynamics with polar molecules

JR Li, K Matsuda, C Miller, AN Carroll, WG Tobias… - Nature, 2023 - nature.com
Strongly interacting spins underlie many intriguing phenomena and applications,,–ranging
from magnetism to quantum information processing. Interacting spins combined with motion …

Improving metrology with quantum scrambling

Z Li, S Colombo, C Shu, G Velez, S Pilatowsky-Cameo… - Science, 2023 - science.org
Quantum scrambling describes the spreading of information into many degrees of freedom
in quantum systems, such that the information is no longer accessible locally but becomes …