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Quasiparticle engineering and entanglement propagation in a quantum many-body system
Open accessAbstract
The key to explaining and controlling a range of quantum phenomena is to study how information propagates around many-body systems. Quantum dynamics can be described by particle-like carriers of information that emerge in the collective behaviour of the underlying system, the so-called quasiparticles. These elementary excitations are predicted to distribute quantum information in a fashion determined by the system's interactions. Here we report quasiparticle dynamics observed in a quantum many-body system of trapped atomic ions. First, we observe the entanglement distributed by quasiparticles as they trace out light-cone-like wavefronts. Second, using the ability to tune the interaction range in our system, we observe information propagation in an experimental regime where the effective-light-cone picture does not apply. Our results will enable experimental studies of a range of quantum phenomena, including transport, thermalization, localization and entanglement growth, and represent a first step towards a new quantum-optic regime of engineered quasiparticles with tunable nonlinear interactions.
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“Clearly, our approach is not restricted to optical lattices and can be applied to ultracold atoms and polar molecules, including scenarios governed by three-body interactions [43].”
From Quantum simulation of generic many-body open system dynamics using classical noise (2017) · cites this paper as [43]
In the citing paper
“It has been shown that the maximal speed of quantum evolution is given by the time averaged norm of the generator of the dynamics [51], which in the case of unitary dynamics and for orthogonal states reduces to the average energy E [48].”
From Trade-Off Between Speed and Cost in Shortcuts to Adiabaticity (2017) · cites this paper as [48]
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“Thus, the minimal time during which a quantum system can evolve from the initial to the final state, i.e., the QSL time τ QSL , is determined by τ QSL ≃ ℏ=2E [48,51].”
From Trade-Off Between Speed and Cost in Shortcuts to Adiabaticity (2017) · cites this paper as [48]
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Metadata
- Authors
- Jurcevic, P., Lanyon, B. P., Hauke, P., Hempel, C., Zoller, P., Blatt, R., & Roos, C. F.
- Affiliations
- Austrian Academy of Sciences (AT)
- Corresponding author
- Roos, C. F.
- Venue
- Nature
- Published
- 2014-07-09
- Volume
- 511
- Issue
- 7508
- Pages
- 202-205
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W1692771265
- Cited by
- 863
- References
- 47
- Citations by year
- 2026: 29 · 2025: 55 · 2024: 57 · 2023: 69 · 2022: 79 · 2021: 67 · 2020: 88 · 2019: 88 · 2018: 82 · 2017: 77 · 2016: 93 · 2015: 62 · 2014: 17
- FWCI
- 41.27
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Nature (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- Iris (University of Trento) (submittedVersion, other-oa)
- arXiv (Cornell University)
- Bulletin of the American Physical Society
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Cold Atom Physics and Bose-Einstein Condensates
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Information and Cryptography
- Keywords
- quasiparticle dynamics, entanglement propagation, trapped atomic ions, long-range interactions, quantum many-body systems, quantum transport, thermalization, localization, entanglement growth
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