Thermal Throttling of Quantum State Transfer

• URL: http://arxiv.org/abs/2608.19315v1
• Date: Wed, 19 Aug 2026 18:00:01 GMT
• Title: Thermal Throttling of Quantum State Transfer
• Abstract summary: We derive tight lower bounds on the necessary growth of commutator norms to achieve approximate state transfer.<n>Specializing in 1D power-law systems with thermal ancilla states, we demonstrate that state transfer runtimes depend sensitively on the scaling of temperature with system size.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum state transfer on qubit lattices is a crucial step in a panoply of quantum information processing tasks. Understanding its fundamental limits in the presence of practical imperfections remains a pressing open question. In particular, it is unclear how thermal noise in the intermediate ancilla sites impedes transfer. In this work, we derive tight lower bounds on the necessary growth of commutator norms to achieve approximate state transfer. Specializing to 1D power-law systems with thermal ancilla states, we demonstrate that state transfer runtimes depend sensitively on the scaling of temperature with system size, improving logarithmic bounds to algebraic ones. Our work extends previous results on exact state transfer to the qualitatively different and more practically relevant regime of approximate state transfer.

Related papers

• Measurement-induced state transitions across the fluxonium qubit landscape [73.92964306525622]
  We study measurement-induced state transitions in the fluxonium qubit over a wide range of parameters.<n>We find that lighter fluxoniums are less susceptible to these state transitions when compared to their heavier counterparts.<n>We attribute this effect to the combination of lower density of multi-photon resonances, a smaller requisite coupling for a given dispersive shift, and a more harmonic-like structure of the charge operator.
  arXiv  Detail & Related papers  (2026-04-09T17:53:41Z)
• Peak state transfer in continuous quantum walks [0.0]
  We study peak state transfer, a notion of high state transfer in qubit networks modeled by continuous-time quantum walks.<n>We provide a spectral characterization of peak state transfer, which allows us to find many examples of peak state transfer.
  arXiv  Detail & Related papers  (2025-05-17T12:39:44Z)
• State transfer in discrete-time quantum walks via projected transition matrices [0.0]
  We define peak state transfer as the highest state transfer that can be achieved between an initial and a target state under unitary evolution.<n>We give a spectral characterization of peak state transfer in the arc-reversal (Grover) walk on various families of graphs.
  arXiv  Detail & Related papers  (2024-11-08T13:35:27Z)
• Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
  We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution. We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions. We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
  arXiv  Detail & Related papers  (2024-05-27T17:40:39Z)
• Transfer and routing of Gaussian states through quantum complex networks with and without community structure [0.7864304771129751]
  We study the routing of single-mode Gaussian states and entanglement through complex networks of quantum harmonic oscillators.<n>We find that even in a random and homogeneous network, the transfer fidelity still depends on the degree of the nodes for any link density.<n>Our results pave the way for further exploration of the role of community structure in state transfer and related tasks.
  arXiv  Detail & Related papers  (2024-03-08T19:00:03Z)
• Quantum Fisher Information for Different States and Processes in Quantum Chaotic Systems [77.34726150561087]
  We compute the quantum Fisher information (QFI) for both an energy eigenstate and a thermal density matrix. We compare our results with earlier results for a local unitary transformation.
  arXiv  Detail & Related papers  (2023-04-04T09:28:19Z)
• Demonstrating Quantum Microscopic Reversibility Using Coherent States of Light [58.8645797643406]
  We propose and experimentally test a quantum generalization of the microscopic reversibility when a quantum system interacts with a heat bath. We verify that the quantum modification for the principle of microscopic reversibility is critical in the low-temperature limit.
  arXiv  Detail & Related papers  (2022-05-26T00:25:29Z)
• Quantum transfer of interacting qubits [0.0]
  transfer of quantum information between different locations is key to many quantum information processing tasks. We address the problem of transferring the state of n interacting qubits. By employing tools from random matrix theory and using the formalism of quantum dynamical maps, we derive a general expression for the average and the variance of the fidelity of an arbitrary quantum state transfer protocol.
  arXiv  Detail & Related papers  (2022-05-03T15:54:38Z)
• A Quantum Optimal Control Problem with State Constrained Preserving Coherence [68.8204255655161]
  We consider a three-level $Lambda$-type atom subjected to Markovian decoherence characterized by non-unital decoherence channels. We formulate the quantum optimal control problem with state constraints where the decoherence level remains within a pre-defined bound.
  arXiv  Detail & Related papers  (2022-03-24T21:31:34Z)
• Stochastic approximate state conversion for entanglement and general quantum resource theories [41.94295877935867]
  An important problem in any quantum resource theory is to determine how quantum states can be converted into each other. Very few results have been presented on the intermediate regime between probabilistic and approximate transformations. We show that these bounds imply an upper bound on the rates for various classes of states under probabilistic transformations. We also show that the deterministic version of the single copy bounds can be applied for drawing limitations on the manipulation of quantum channels.
  arXiv  Detail & Related papers  (2021-11-24T17:29:43Z)
• Coherent and dissipative dynamics at quantum phase transitions [0.0]
  Presentation is limited to issues related to, and controlled by, the quantum transition developed by closed many-body systems.<n>We focus on the physical conditions giving rise to a nontrivial interplay between critical modes and various dissipative mechanisms.
  arXiv  Detail & Related papers  (2021-03-03T19:00:58Z)
• Universality of entanglement transitions from stroboscopic to continuous measurements [68.8204255655161]
  We show that the entanglement transition at finite coupling persists if the continuously measured system is randomly nonintegrable. This provides a bridge between a wide range of experimental settings and the wealth of knowledge accumulated for the latter systems.
  arXiv  Detail & Related papers  (2020-05-04T21:45:59Z)

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.