Coherent many-body spin dynamics in a long-range interacting Ising chain

By J. Zeiher, Jae-yoon Choi, Antonio Rubio-Abadal, Thomas Pohl, R. V. Bijnen, I. Bloch, C. Gross. 2017

210 citations recorded by the source corpus.

Coherent many-body quantum dynamics lies at the heart of quantum simulation and quantum computation. Both require coherent evolution in the exponentially large Hilbert space of an interacting many-body system. To date, trapped ions have defined the state of the art in terms of achievable coherence times in interacting spin chains. Here, we establish an alternative platform by reporting on the observation of coherent, fully interaction-driven quantum revivals of the magnetization in Rydberg-dressed Ising spin chains of atoms trapped in an optical lattice. We identify partial many-body revivals at up to about ten times the characteristic time scale set by the interactions. At the same time, single-site-resolved correlation measurements link the magnetization dynamics with inter-spin correlations appearing at different distances during the evolution. These results mark an enabling step towards the implementation of Rydberg atom based quantum annealers, quantum simulations of higher dimensional complex magnetic Hamiltonians, and itinerant long-range interacting quantum matter.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/81bd51bc93e5e3fcf9ec9c4eb1b3add22889087c

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Microscopic Control and Detection of Ultracold Strontium in Optical-Tweezer Arrays (2018, background): “It further would be suitable for fundamental studies of squeezing and long-range entanglement on an optical clock transition [34, 48, 72, 73].”
Probing many-body dynamics on a 51-atom quantum simulator (2017, methodology): “controllability could be obtained by encoding qubits into hyperfine sublevels of the electronic ground state and using state-selective Rydberg excitation [23].”
Quantum simulation and computing with Rydberg-interacting qubits (2020, background): “Also in 2017, Zeiher et al. 46 realized an Ising model in a 10 site 1D array of 87 Rb Rydberg-dressed atoms in an optical lattice with an average ﬁlling of 0 .”
Statistical localization: From strong fragmentation to strong edge modes (2019, background): “[91] Johannes Zeiher, Jae-yoon Choi, Antonio RubioAbadal, Thomas Pohl, Rick van Bijnen, Immanuel Bloch, and Christian Gross, “Coherent many-body spin dynamics in a long-range interacting ising chain,” Phys.”
Quantum simulations with ultracold atoms in optical lattices (2017, methodology): “Nonetheless, coherent evolution of a Rydberg-dressed many-body system was recently demonstrated to be observable in small one- and two-dimensional systems; hence, this technique indeed allows for coherent interaction control (144, 145) and is a promising basis for a future coherent quantum annealing”