aqora

Stimulated wave of polarization in spin chains

G. B. Furman, S. D. Goren, Jae‐Seung Lee +3 more

Stimulated wave of polarization, triggered by a flip of a single spin, presents a simple model of quantum amplification. Previously, it has been found that such a wave can be excited in a one-dimensional Ising chain with nearest-neighbor interactions, irradiated by a weak resonant transverse field. Here we explore models with more realistic Hamiltonians, in particular, with natural dipole-dipole interactions. Results of simulations for one-dimensional spin chains and rings with up to nine spins are presented.Stimulated wave of polarization, triggered by a flip of a single spin, presents a simple model of quantum amplification. Previously, it has been found that such a wave can be excited in a one-dimensional Ising chain with nearest-neighbor interactions, irradiated by a weak resonant transverse field. Here we explore models with more realistic Hamiltonians, in particular, with natural dipole-dipole interactions. Results of simulations for one-dimensional spin chains and rings with up to nine spins are presented.

arXiv:quant-ph/0603049Physical Review BAug 2, 200614 citations

Correlations in Quantum Spin Chains and Lattices: A Fully Microscopic Many-Body Approach

R. F. Bishop, John B. Parkinson, Yang Xian

Recent Progress in Many-Body TheoriesJan 1, 19922 citations

One-dimensional chain of anisotropic spin-spin interactions

Chongming Yang, Chuan‐Zhang Yang

Physics LettersJan 1, 196686 citations

Spin Waves in a Bose-Einstein–Condensed Atomic Spin Chain

Weiping Zhang, Han Pu, Christopher P. Search +1 more

The spin dynamics of atomic Bose-Einstein condensates confined in a one-dimensional optical lattice is studied. The condensates at each lattice site behave like spin magnets that can interact with each other through both the light-induced dipole-dipole interaction and the static magnetic dipole-dipole interaction. We show how these site-to-site dipolar interactions can distort the ground-state spin orientations and lead to the excitation of spin waves. The dispersion relation of the spin waves is studied and possible detection schemes are proposed.The spin dynamics of atomic Bose-Einstein condensates confined in a one-dimensional optical lattice is studied. The condensates at each lattice site behave like spin magnets that can interact with each other through both the light-induced dipole-dipole interaction and the static magnetic dipole-dipole interaction. We show how these site-to-site dipolar interactions can distort the ground-state spin orientations and lead to the excitation of spin waves. The dispersion relation of the spin waves is studied and possible detection schemes are proposed.

arXiv:cond-mat/0109415Physical Review LettersJan 25, 200276 citations

Quantum correlations in a long range interaction spin chain

Bo Li, Yanshen Wang

Physica B Condensed MatterOct 7, 201116 citations

Quantum many-body scars in few-body dipole-dipole interactions

Sarah E. Spielman, Alicia Handian, Nina P. Inman +2 more

We simulate the dynamics of Rydberg atoms resonantly exchanging energy via two-, three-, and four-body dipole-dipole interactions in a one-dimensional array. Using simplified models of a realistic experimental system, we study the initial-state survival probability, mean level spacing, spread of entanglement, and properties of the energy eigenstates. By exploring a range of disorders and interaction strengths, we find regions in parameter space where the three- and four-body dynamics either fail to thermalize or do so slowly. The interplay between the stronger hopping and weaker field-tuned interactions gives rise to quantum many-body scar states, which play a critical role in slowing the dynamics of the three- and four-body interactions. Published by the American Physical Society 2024We simulate the dynamics of Rydberg atoms resonantly exchanging energy via two-, three-, and four-body dipole-dipole interactions in a one-dimensional array. Using simplified models of a realistic experimental system, we study the initial-state survival probability, mean level spacing, spread of entanglement, and properties of the energy eigenstates. By exploring a range of disorders and interaction strengths, we find regions in parameter space where the three- and four-body dynamics either fail to thermalize or do so slowly. The interplay between the stronger hopping and weaker field-tuned interactions gives rise to quantum many-body scar states, which play a critical role in slowing the dynamics of the three- and four-body interactions. Published by the American Physical Society 2024

arXiv:2208.02909Physical Review ResearchNov 4, 20244 citations

Many-body correlations in a one-dimensional spin chain with simplified dipole-dipole interactions

Related papers

Many-body correlations in a one-dimensional spin chain with simplified dipole-dipole interactions

Related papers