Entanglement Routers Using Macroscopic Singlets

Abstract

We propose a mechanism where high entanglement between very distant boundary spins is generated by suddenly connecting two long Kondo spin chains. We show that this procedure provides an efficient way to route entanglement between multiple distant sites. We observe that the key features of the entanglement dynamics of the composite spin chain are remarkably well described using a simple model of two singlets, each formed by two spins. The proposed entanglement routing mechanism is a footprint of the emergence of a Kondo cloud in a Kondo system and can be engineered and observed in varied physical settings.

4 pages, 5 figures. Slightly longer than the published version

References in corpus (23)

• Entanglement of Formation of an Arbitrary State of Two Qubits
• Scaling of Entanglement close to a Quantum Phase Transitions
• Entanglement in a simple quantum phase transition
• Real time evolution using the density matrix renormalization group
• Relaxation, dephasing, and quantum control of electron spins in double quantum dots
• Quantum computing with spin cluster qubits
• Unmodulated spin chains as universal quantum wires
• Long-distance entanglement in spin systems
• Long-distance entanglement and quantum teleportation in XX spin chains
• Quantum state transmission via a spin ladder as a robust data bus
• Qubit Teleportation and Transfer across Antiferromagnetic Spin Chains
• Negativity as the Entanglement Measure to Probe the Kondo Regime in the Spin-Chain Kondo Model
• Prospects for measurement-based quantum computing with solid state spins
• Quantum Impurity Entanglement
• Quantum router based on ac control of qubit chains
• Excitation and Entanglement Transfer Versus Spectral Gap
• Y-junction of superconducting Josephson chains
• Exploiting Quench Dynamics in Spin Chains for Distant Entanglement and Quantum Communication
• Kondo Cloud Mediated Long Range Entanglement After Local Quench in a Spin Chain
• Entanglement production due to quench dynamics of an anisotropic XY chain in a transverse field
• Entanglement Resonance in Driven Spin Chains
• Quantum simulation of Anderson and Kondo lattices with superconducting qubits
• Kondo Effect in Spin Chains

Cited by in corpus (49)

• Entanglement negativity in extended systems: A field theoretical approach
• Finite temperature entanglement negativity in conformal field theory
• Partial time-reversal transformation and entanglement negativity in fermionic systems
• Entanglement negativity after a global quantum quench
• Entanglement negativity in the critical Ising chain
• Entanglement negativity of fermions: monotonicity, separability criterion, and classification of few-mode states
• Entanglement negativity after a local quantum quench in conformal field theories
• Symmetry decomposition of negativity of massless free fermions
• Quantum-state transfer via resonant tunnelling through local field induced barriers
• Routing quantum information in spin chains
• Twisted and untwisted negativity spectrum of free fermions
• Automatic spin-chain learning to explore the quantum speed limit
• Topological entanglement negativity in Chern-Simons theories
• Finite-temperature entanglement negativity of free fermions
• Towards entanglement negativity of two disjoint intervals for a one dimensional free fermion
• Spin structures and entanglement of two disjoint intervals in conformal field theories
• Entanglement negativity spectrum of random mixed states: A diagrammatic approach
• Transfer of arbitrary two qubit states via a spin chain
• Entanglement negativity in a two dimensional harmonic lattice: Area law and corner contributions
• Partial transpose of two disjoint blocks in XY spin chains
• The Negativity Hamiltonian: An operator characterization of mixed-state entanglement
• Negativity Spectrum in the Random Singlet Phase
• The negativity contour: a quasi-local measure of entanglement for mixed states
• Entanglement negativity in free-fermion systems: An overlap matrix approach
• Measurement induced dynamics for spin chain quantum communication and its application for optical lattices
• Non-equilibrium quantum dynamics after local quenches
• Measurement quench in many-body systems
• Majorana Entanglement Bridge
• Entanglement switching via the Kondo effect in triple quantum dots
• Optimal Quench for Distance-Independent Entanglement and Maximal Block Entropy
• Low-control and robust quantum refrigerator and applications with electronic spins in diamond
• Nonequilibrium dynamics of the Ising chain in a fluctuating transverse field
• Evolution of the magnetization after a local quench in the critical transverse-field Ising chain
• Understanding the propagation of excitations in quantum spin chains with different kind of interactions
• Self assembled Wigner crystals as mediators of spin currents and quantum information
• Symmetry resolution of the computable cross-norm negativity of two disjoint intervals in the massless Dirac field theory
• Quench Induced Growth of Distant Entanglement from Product and Locally Entangled States in Spin Chains
• General Quantum State Swap: an XY model analysis
• Quench dynamics of Rényi negativities and the quasiparticle picture
• Surface Entanglement in Quantum Spin Networks
• Symmetry protected entanglement in random mixed states
• Unitary Design of Quantum Spin Networks for Robust Routing, Entanglement Generation, and Phase Sensing
• Two-excitation routing via linear quantum channels
• Entanglement Amplification in the Non-Perturbative Dynamics of Modular Quantum Systems
• Generating Symmetry-Protected Long-Range Entanglement in Many-Body Systems
• Fermionic Partial Transpose in the Overlap Matrix Framework for Entanglement Negativity
• Ballistic Entanglement Cloud after a Boundary Quench
• Quantum teleportation by utilizing helical spin chains for sharing entanglement
• Pancharatnam phase deficit can detect macroscopic entanglement