Exploiting Quench Dynamics in Spin Chains for Distant Entanglement and Quantum Communication

Abstract

We suggest a method of entangling significantly the distant ends of a spin chain using minimal control. This entanglement between distant individual spins is brought about solely by exploiting the dynamics of an initial mixed state with Neel order if the lattice features nearest-neighbor XXZ interaction. There is no need to control single spins or to have engineered couplings or to pulse globally. The method only requires an initial nonadiabatic switch (a quench) between two Hamiltonians followed by an evolution under the second Hamiltonian. The scheme is robust to randomness of the couplings as well as the finiteness of an appropriate quench and could potentially be implemented in various experimental setups, ranging from atoms in optical lattices to Josephson-junction arrays.

5 pages, 2 figures; Comments welcome

References in corpus (32)

• Mixed State Entanglement and Quantum Error Correction
• Scaling of Entanglement close to a Quantum Phase Transitions
• Entanglement in a simple quantum phase transition
• Quantum Communication Through an Unmodulated Spin Chain
• Evolution of Entanglement Entropy in One-Dimensional Systems
• Time-dependence of correlation functions following a quantum quench
• Perfect state transfer in quantum spin networks
• Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices
• Effective quantum spin systems with ion traps
• Time-resolved Observation and Control of Superexchange Interactions with Ultracold Atoms in Optical Lattices
• Quantum Phase Transitions and Vortex Dynamics in Superconducting Networks
• Exact relaxation in a class of non-equilibrium quantum lattice systems
• Entanglement versus Correlations in Spin Systems
• Entanglement Entropy dynamics in Heisenberg chains
• Quench dynamics across quantum critical points
• The Propagation of Quantum Information Through a Spin System
• Towards mechanical entanglement in nano-electromechanical devices
• Entropy of entanglement and correlations induced by a quench: Dynamics of a quantum phase transition in the quantum Ising model
• Long-distance entanglement in spin systems
• Long range correlations in the non-equilibrium quantum relaxation of a spin chain
• Perfect state transfer on a spin-chain without state initialization
• Exploring local quantum many-body relaxation by atoms in optical superlattices
• Long-distance entanglement and quantum teleportation in XX spin chains
• Globally controlled quantum wires for perfect qubit transport, mirroring and computing
• Improved transfer of quantum information using a local memory
• Entanglement dynamics in chains of qubits with noise and disorder
• Quantum state transfer in arrays of flux qubits
• Quantum communication beyond the localization length in disordered spin chains
• Entanglement Resonance in Driven Spin Chains
• Effective Boundary Field Theory for a Josephson Junction Chain with a Weak Link
• Freezing distributed entanglement in spin chains
• Perfect mirror transport protocol with higher dimensional quantum chains

Cited by in corpus (33)

• Entanglement growth in quench dynamics with variable range interactions
• On reduced density matrices for disjoint subsystems
• Photonic Simulation of Entanglement Growth After a Spin Chain Quench
• Entanglement Routers Using Macroscopic Singlets
• Entanglement generation in periodically driven integrable systems: dynamical phase transitions and steady state
• Quantum router based on ac control of qubit chains
• Robust Entanglement in Anti-ferromagnetic Heisenberg Chains by Single-spin Optimal Control
• Information Transferring Ability of the Different Phases of a finite XXZ Spin Chain
• 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
• Non-equilibrium dynamics of quantum systems: order parameter evolution, defect generation, and qubit transfer
• Modular Entanglement
• Entanglement in a Time-Dependent Coupled XY Spin Chain in an External Magnetic Field
• Robust and Reliable Transfer of a Quantum State Through a Spin Chain
• Rabi oscillations, decoherence, and disentanglement in a qubit-spin-bath system: exact dynamics
• Dynamics of entanglement in the transverse Ising model
• Phase boundaries in alternating field quantum XY model with Dzyaloshinskii-Moriya interaction: Sustainable entanglement in dynamics
• Quantum state transfer via temporal kicking of information
• Optimal Quench for Distance-Independent Entanglement and Maximal Block Entropy
• Creation and manipulation of entanglement in spin chains far from equilibrium
• Quantum state transfer through a spin chain in a multi-excitation subspace
• Quench Dynamics of Entanglement in an Opened Anisotropic Spin-1/2 Heisenberg Chain
• Exact dynamics of the homogeneous two-qubit $XXZ$ central spin model with the spin bath prepared in superpositions of symmetric Dicke states
• Survival of time-evolved correlations depends on whether quenching is across critical point in XY spin chain
• General conditions for the generation of long-distance entanglement
• Quench Induced Growth of Distant Entanglement from Product and Locally Entangled States in Spin Chains
• Duplex quantum communication through a spin chain
• Long-distance Entanglement generation by Local Rotational Protocols in spin chains
• Noise effects in perfect transmission of quantum states
• Correlation transfer in large-spin chains
• Long distance entanglement in one-dimensional quantum systems under sinusoidal deformation
• Entanglement Amplification in the Non-Perturbative Dynamics of Modular Quantum Systems
• Role of external fields in enhancing long-distance entanglement at finite temperatures