Spin-chain-star systems: entangling multiple chains of spin qubits

• URL: http://arxiv.org/abs/2203.06711v1
• Date: Sun, 13 Mar 2022 17:03:49 GMT
• Title: Spin-chain-star systems: entangling multiple chains of spin qubits
• Authors: R. Grimaudo, A. S. M. de Castro, A. Messina, and D. Valenti
• Abstract summary: We consider spin-chain-star systems characterized by N-wise many-body interactions between the spins in each chain and the central one. We show that such systems can be exactly mapped into standard spin-star systems through unitary transformations.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We consider spin-chain-star systems characterized by N-wise many-body interactions between the spins in each chain and the central one. We show that such systems can be exactly mapped into standard spin-star systems through unitary transformations. Such an approach allows the solution of the dynamic problem of an XX spin-chain-star model and transparently shows the emergence of quantum correlations in the system, based on the idea of entanglement between chains.

Related papers

• Harnessing spin-qubit decoherence to probe strongly-interacting quantum systems [0.0]
  We employ a single spin qubit to probe a strongly interacting system. By focusing on the XXZ spin chain, we observe diverse dynamics in the qubit evolution. This approach reveals the power of small quantum systems to probe the properties of large, strongly correlated quantum systems.
  arXiv  Detail & Related papers  (2024-10-29T12:51:55Z)
• Emergence of anyonic correlations from spin and charge dynamics in one dimension [19.444636864515726]
  We propose a transformation for spin and charge degrees of freedom in one-dimensional lattice systems, constrained to have no doubly occupied sites. The transformation delivers particle creation and operators in a form of a spinless particle and a non-local operator acting on the space of states of a spin-$1/2$ chain.
  arXiv  Detail & Related papers  (2023-01-05T17:22:39Z)
• Finite-size criticality in fully connected spin models on superconducting quantum hardware [0.0]
  We exploit the new resources offered by quantum algorithms to detect the quantum critical behaviour of fully connected spin$-1/2$ models. We propose a method based on variational algorithms run on superconducting transmon qubits.
  arXiv  Detail & Related papers  (2022-08-04T16:00:34Z)
• Encoded State Transfer: Beyond the Uniform Chain [0.0]
  In a recent work, we showed that a uniformly coupled chain could be symmetrically extended by engineered spin chains. In this paper, we apply the same strategy to a much broader range of initial systems.
  arXiv  Detail & Related papers  (2022-07-25T13:25:34Z)
• Unitary Design of Quantum Spin Networks for Robust Routing, Entanglement Generation, and Phase Sensing [0.0]
  This paper studies a more complex spin system, a 2D spin network (SN) engineered by applying suitable unitaries to two uncoupled spin chains. Considering only the single-excitation subspace of the SN, it is demonstrated that the system can be operated as a router, directing information through the SN. It is also shown that it can serve to generate maximally entangled states between two sites.
  arXiv  Detail & Related papers  (2022-02-05T20:12:54Z)
• Understanding the propagation of excitations in quantum spin chains with different kind of interactions [68.8204255655161]
  It is shown that the inhomogeneous chains are able to transfer excitations with near perfect fidelity. It is shown that both designed chains have in common a partially ordered spectrum and well localized eigenvectors.
  arXiv  Detail & Related papers  (2021-12-31T15:09:48Z)
• Sensing quantum chaos through the non-unitary geometric phase [62.997667081978825]
  We propose a decoherent mechanism for sensing quantum chaos. The chaotic nature of a many-body quantum system is sensed by studying the implications that the system produces in the long-time dynamics of a probe coupled to it.
  arXiv  Detail & Related papers  (2021-04-13T17:24:08Z)
• 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)
• Continuous dynamical decoupling of spin chains: Inducing two-qubit interactions to generate perfect entanglement [0.0]
  Control over entanglement in spin chains is useful for quantum information processing applications. We show that the quantum state of any two spins in the spin chain can be made to be a Bell state.
  arXiv  Detail & Related papers  (2020-12-07T17:36:44Z)
• 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)

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.