Quantum router based on ac control of qubit chains

2009/05/28 by David Zueco, Fernando Galve, Sigmund Kohler +1 · 2 citations
Computer Science · Physics and Astronomy · #Computer science #Flux qubit #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum decoherence #Quantum information #Quantum mechanics #Qubit #Superconducting quantum computing #quant-ph

paper · pdf · doi:10.1103/physreva.80.042303

published as Phys. Rev. A 80, 042303 (2009) · 10 pages, 9 figures

arxiv created 2009/05/28 · openalex publication_date 2009/10/02 · arxiv updated 2010/08/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study the routing of quantum information in qubit chains. This task is achieved by suitably chosen time-dependent local fields acting on the qubits. Employing the physics of coherent destruction of tunneling, we demonstrate that a driving-induced renormalization of the coupling between neighboring qubits provides the key for controlling the transduction of quantum information between permanently coupled qubits. We employ this idea for building a quantum router. Moreover, we discuss the experimental implementation with Penning traps and study the robustness of our protocol under realistic experimental conditions, such as fabrication uncertainties and decoherence.

Citations

• Driven quantum transport on the nanoscale
• Teleporting an unknown quantum state via dual classical and Einstein-Podolsky-Rosen channels
• Quantum communication through spin chain dynamics: an introductory overview
• Quantum tunnelling in a dissipative system
• Entanglement of Formation of an Arbitrary State of Two Qubits
• Global controllability with a single local actuator
• Visualization of Coherent Destruction of Tunneling in an Optical Double Well System
• Entanglement-based quantum communication over 144 km
• Quantum ratchets for quantum communication with optical superlattices
• Fundamental aspects of quantum Brownian motion
• Quantum theory, the Church–Turing principle and the universal quantum computer

Cited by

• Multi-fractal geometry of finite networks of spins: Nonequilibrium dynamics beyond thermalization and many-body-localization
• Single-photon router: Coherent control of multichannel scattering for single photons with quantum interferences