Qubit Teleportation and Transfer across Antiferromagnetic Spin Chains

2007/03/31 by Lorenzo Campos Venuti, L. Campos Venuti, C. Degli Esposti Boschi +1 · 7 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum many-body systems #cond-mat.str-el #quant-ph

paper · pdf · doi:10.1103/physrevlett.99.060401

published as Phys. Rev. Lett. 99, 060401 (2007) · 5 pages, 4 .eps figures

arxiv created 2007/04/04 · openalex publication_date 2007/08/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We explore the capability of spin-1/2 chains to act as quantum channels for both teleportation and transfer of qubits. Exploiting the emergence of long-distance entanglement in low-dimensional systems [Phys. Rev. Lett. 96, 247206 (2006)10.1103/Phys.Rev.Lett.96, 247206(2006)], here we show how to obtain high communication fidelities between distant parties. An investigation of protocols of teleportation and state transfer is presented, in the realistic situation where temperature is included. Basing our setup on antiferromagnetic rotationally invariant systems, both protocols are represented by pure depolarizing channels. We propose a scheme where channel fidelity close to 1 can be achieved on very long chains at moderately small temperature.

Cited by

• Long-distance entanglement in many-body atomic and optical systems
• 99%-fidelity ballistic quantum-state transfer through long uniform channels
• Perfect state transfer in long-range interacting spin chains
• Characterization of qubit chains by Feynman probes
• Vibrational exciton mediated quantum state transfer: Simple model
• Quantum Simulation of Antiferromagnetic Heisenberg Chain with Gate-Defined Quantum Dots
• Adiabatic state distribution using anti-ferromagnetic spin systems