Quasiparticle engineering and entanglement propagation in a quantum many-body system

2014/01/24 by Petar Jurcevic, P. Jurcevic, B. P. Lanyon +7 · 35 citations
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Macroscopic quantum phenomena #Physics #Quantum #Quantum Information and Cryptography #Quantum dynamics #Quantum entanglement #Quantum information #Quantum many-body systems #Quantum mechanics #Quasiparticle #cond-mat.mes-hall #cond-mat.quant-gas #cond-mat.supr-con #physics.atom-ph #quant-ph

paper · pdf · doi:10.1038/nature13461

published as Nature 511, 202 (2014) · [v1]: 11 pages, 4 figures, 4 extended data figures; [v2]: Update Reference [26], for Complentary work see also arXiv:1401.5088; [v3]: Update acknowledgments

arxiv created 2014/01/24 · openalex publication_date 2014/07/08 · arxiv updated 2014/07/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The key to explaining a wide range of quantum phenomena is understanding how entanglement propagates around many-body systems. Furthermore, the controlled distribution of entanglement is of fundamental importance for quantum communication and computation. In many situations, quasiparticles are the carriers of information around a quantum system and are expected to distribute entanglement in a fashion determined by the system interactions. Here we report on the observation of magnon quasiparticle dynamics in a one-dimensional many-body quantum system of trapped ions representing an Ising spin model. Using the ability to tune the effective interaction range, and to prepare and measure the quantum state at the individual particle level, we observe new quasiparticle phenomena. For the first time, we reveal the entanglement distributed by quasiparticles around a many-body system. Second, for long-range interactions we observe the divergence of quasiparticle velocity and breakdown of the light-cone picture that is valid for short-range interactions. Our results will allow experimental studies of a wide range of phenomena, such as quantum transport, thermalisation, localisation and entanglement growth, and represent a first step towards a new quantum-optical regime with on-demand quasiparticles with tunable non-linear interactions.

Citations

• Lieb-Schultz-Mattis in higher dimensions
• Lieb-Robinson Bounds and the Exponential Clustering Theorem
• Quantum communication through spin chain dynamics: an introductory overview
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Fault-tolerant quantum computation by anyons
• Field Dependence of the Intrinsic Domain Magnetization of a Ferromagnet
• Locality in Quantum Systems

Cited by

• Out-of-horizon correlations following a quench in a relativistic quantum field theory
• Crystallization in Ising quantum magnets
• Toward Heisenberg-Limited Rabi Spectroscopy
• Coherent ground-state transport of neutral atoms
• Unraveling the excitation spectrum of many-body systems from quantum quenches
• Performance evaluation of the discrete truncated Wigner approximation for quench dynamics of quantum spin systems with long-range interactions
• Self-Assembled Wigner Crystals as Mediators of Spin Currents and Quantum Information
• Full-Counting Many-Particle Dynamics: Nonlocal and Chiral Propagation of Correlations
• Glassy Phase of Optimal Quantum Control
• Aging dynamics in quenched noisy long-range quantum Ising models
• Observing the Space- and Time-Dependent Growth of Correlations in Dynamically Tuned Synthetic Ising Models with Antiferromagnetic Interactions
• Dynamical quantum phase transition from a critical quantum quench
• Speed limit for open systems coupled to general environments
• Quantum correlations and entanglement in far-from-equilibrium spin systems
• Fine-grained dynamics of entanglement in non-integrable quenches far across the Ising quantum critical point
• Efficient tomography of a quantum many-body system
• Effects of excited state quantum phase transitions on system dynamics
• Transport of quantum excitations via local and nonlocal fluctuations
• Collective couplings: Rectification and supertransmittance
• Scaling properties of the dynamics at first-order quantum transitions when boundary conditions favor one of the two phases
• Quench-induced entanglement and relaxation dynamics in Luttinger liquids
• Cryogenic resonator design for trapped ion experiments in Paul traps
• Real-time scattering of interacting quasiparticles in quantum spin chains
• Epidemic Dynamics in Open Quantum Spin Systems
• Quantum Spin Lenses in Atomic Arrays
• Towards analog quantum simulations of lattice gauge theories with trapped ions
• Addressing single trapped ions for Rydberg quantum logic
• Generation of quantum states by the dynamics of spin chains: Analytical solution
• Exceptional points in oligomer chains
• Landau-Majorana-Stückelberg-Zener dynamics driven by coupling for two interacting qutrit systems
• Non-Anderson critical scaling of the Thouless conductance in 1D
• Effective theory and breakdown of conformal symmetry in a long-range quantum chain
• Quantum quenches in 1 + 1 dimensional conformal field theories
• Fluctuations and non-Hermiticity in the stochastic approach to quantum spins
• Detecting Out-of-Time-Order Correlations via Quasiadiabatic Echoes as a Tool to Reveal Quantum Coherence in Equilibrium Quantum Phase Transitions

Related

• The Smearing of Quasi-Particles: Signatures in the Entanglement Entropy of Excited Many-Particle Systems
• Simulating a quasiparticle on a quantum device
• Many-Body Physics with Trapped Ions
• Observing Quasiparticles through the Entanglement Lens
• Universality in entanglement of quasiparticle excitations