期刊
PHYSICAL REVIEW LETTERS
卷 122, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.150601
关键词
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资金
- ARO
- NSF Ideas Lab on Quantum Computing
- DOE ASCR Quantum Testbed Pathfinder program
- DOE BES Materials and Chemical Sciences Research for Quantum Information Science program
- ARL Center for Distributed Quantum Information
- ARO MURI
- NIST NRC Research Postdoctoral Associateships
- AFOSR Atomic and Molecular Physics Programs
- AFOSR MURI on Quantum Measurement and Verification
- IARPA LogiQ program
- NSF Physics Frontier Center at JQI
- National Science Foundation [NSF PHY-1748958]
- NSF PFC at Joint Quantum Institute
We study the quasiparticle excitation and quench dynamics of the one-dimensional transverse-field Ising model with power-law (1/r(alpha)) interactions. We find that long-range interactions give rise to a confining potential, which couples pairs of domain walls (kinks) into bound quasiparticles, analogous to mesonic states in high-energy physics. We show that these quasiparticles have signatures in the dynamics of order parameters following a global quench, and the Fourier spectrum of these order parameters can be exploited as a direct probe of the masses of the confined quasiparticles. We introduce a two-kink model to qualitatively explain the phenomenon of long-range-interaction-induced confinement and to quantitatively predict the masses of the bound quasiparticles. Furthermore, we illustrate that these quasiparticle states can lead to slow thermalization of one-point observables for certain initial states. Our work is readily applicable to current trapped-ion experiments.
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