Excitation transfer in disordered spin chains with long-range exchange interactions

• URL: http://arxiv.org/abs/2208.04161v3
• Date: Wed, 14 Sep 2022 11:58:18 GMT
• Title: Excitation transfer in disordered spin chains with long-range exchange interactions
• Authors: Nikolaos E. Palaiodimopoulos, Maximilian Kiefer-Emmanouilidis, Gershon Kurizki and David Petrosyan
• Abstract summary: We examine spin excitation or polarization transfer via long-range interacting spin chains with diagonal and off-diagonal disorder. We identify the energy eigenstates of the system with large localization length and sufficient support at the chain boundaries. We quantify the performance of two transfer schemes involving weak static couplings of the sender and receiver spins to the chain.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We examine spin excitation or polarization transfer via long-range interacting spin chains with diagonal and off-diagonal disorder. To this end, we determine the mean localization length of the single-excitation eigenstates of the chain for various strengths of the disorder. We then identify the energy eigenstates of the system with large localization length and sufficient support at the chain boundaries that are suitable to transfer an excitation between the sender and receiver spins connected to the opposite ends of the chain. We quantify the performance of two transfer schemes involving weak static couplings of the sender and receiver spins to the chain, and time-dependent couplings realizing stimulated adiabatic passage of the excitation via the intermediate eigenstates of the chain which exhibits improved performance.

Related papers

• Nonreciprocal Amplification Transition in a Driven-Dissipative Quantum Network [3.32634590232003]
  We study the transport properties of a driven-dissipative quantum network. Multiple bosonic cavities are coupled through a nonreciprocal bus with unidirectional transmission.
  arXiv  Detail & Related papers  (2022-07-14T13:07:27Z)
• Anomalous multifractality in quantum chains with strongly correlated disorder [68.8204255655161]
  We show that a robust and unusual multifractal regime can emerge in a one-dimensional quantum chain with maximally correlated disorder. This regime is preceded by a mixed and an extended regime at weaker disorder strengths, with the former hosting both extended and multifractal eigenstates.
  arXiv  Detail & Related papers  (2021-12-18T06:31:51Z)
• Demonstration of long-range correlations via susceptibility measurements in a one-dimensional superconducting Josephson spin chain [39.24184167771873]
  In this work, we explore the properties of a spin chain implemented with superconducting flux circuits. The susceptibility of the chain is probed and shown to support long-range, cross chain correlations.
  arXiv  Detail & Related papers  (2021-11-08T05:59:04Z)
• Pretty good quantum state transfer on isotropic and anisotropic Heisenberg spin chains with tailored site dependent exchange couplings [68.8204255655161]
  We consider chains with isotropic and anisotropic Heisenberg Hamiltonian with up to 100 spins. We consider short transferred times, in particular shorter than those achievable with known time-dependent control schemes.
  arXiv  Detail & Related papers  (2021-01-08T19:32:10Z)
• Nonadiabatic Phase Transition with Broken Chiral Symmetry [2.8623040632930556]
  We explore nonadiabatic quantum phase transitions in an Ising spin chain with a linearly time-dependent transverse field and two different spins per unit cell. We find that the excitations on one of the chain sub-lattices are suppressed in the nearly-adiabatic regime exponentially.
  arXiv  Detail & Related papers  (2020-12-14T16:22:17Z)
• Unidirectional Quantum Transport in Optically Driven $V$-type Quantum Dot Chains [58.720142291102135]
  We predict a mechanism for achieving complete population inversion in a continuously driven InAs/GaAs semiconductor quantum dot. This highly nonequilibrium steady state is enabled by the interplay between $V$-type interband transitions and a non-Markovian decoherence mechanism.
  arXiv  Detail & Related papers  (2020-09-25T08:30:41Z)
• Non-equilibrium non-Markovian steady-states in open quantum many-body systems: Persistent oscillations in Heisenberg quantum spin chains [68.8204255655161]
  We investigate the effect of a non-Markovian, structured reservoir on an open Heisenberg spin chain. We establish a coherent self-feedback mechanism as the reservoir couples frequency-dependent to the spin chain.
  arXiv  Detail & Related papers  (2020-06-05T09:16:28Z)
• Controlled quantum state transfer in $XX$ spin chains at the Quantum Speed Limit [62.997667081978825]
  In homogeneous chains it implies that taking information from one extreme of the chain to the other will take a time $O(N/2)$, where $N$ is the chain length. We design control pulses that achieve near perfect population transfer between the extremes of the chain at times on the order of $N/2$, or larger.
  arXiv  Detail & Related papers  (2020-05-15T23:10:19Z)
• Long-range interaction in an open boundary-driven Heisenberg spin lattice: A far-from-equilibrium transition to ballistic transport [62.997667081978825]
  We study an open Heisenberg XXZ spin chain with long-range Ising-type interaction. We find that the chain lengths for this transition are increasing with decreasing range of the Ising-type interactions between distant spins. The transition can be explained by the suppression of ferromagnetic domains at the edges of the chain.
  arXiv  Detail & Related papers  (2020-04-27T12:22:50Z)
• Multipartite entanglement transfer in spin chains [0.0]
  We investigate the transfer of genuine multipartite entanglement across a spin-1/2 chain with nearest-neighbor XX-type interaction. We find that high-quality multipartite entanglement transfer is achieved at the same time that three excitations are transferred to the opposite edge of the chain.
  arXiv  Detail & Related papers  (2020-01-10T16:01:56Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.