Measurement induced dynamics for spin chain quantum communication and its application for optical lattices

Abstract

We present a protocol for quantum state transfer and remote state preparation across spin chains which operate in their anti-ferromagnetic mode. The proposed mechanism harnesses the inherent entanglement of the ground state of the strongly correlated many-body systems which naturally exists for free. The uniform Hamiltonian of the system does not need any engineering and, during the whole process, remains intact while a single qubit measurement followed by a single-qubit rotation are employed for both encoding and inducing dynamics in the system. This, in fact, has been inspired by recent progress in observing spin waves in optical lattice experiments, in which manipulation of the Hamiltonian is hard and instead local rotations and measurements have become viable. The attainable average fidelity stays above the classical threshold for chains up to length $50$ and the system shows very good robustness against various sources of imperfection.

includes 10 pages, 6 figures and 2 tables

References in corpus (10)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• Single-Spin Addressing in an Atomic Mott Insulator
• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• Coherent Quantum Transport in Photonic Lattices
• Perfect state transfer on a spin-chain without state initialization
• Spin gradient demagnetization cooling of ultracold atoms
• Perfect Quantum Routing in Regular Spin Networks
• Entanglement Routers Using Macroscopic Singlets
• Entanglement Enhanced Information Transfer through Strongly Correlated Systems and its Application to Optical Lattices

Cited by in corpus (22)

• Entanglement phase transitions in measurement-only dynamics
• Review: Quantum Metrology and Sensing with Many-Body Systems
• Sequential measurements for quantum-enhanced magnetometry in spin chain probes
• Measurement-Induced Phase Transition in a Quantum Spin System
• Measurement quench in many-body systems
• Simultaneous multiple-users quantum communication across a spin chain channel
• Measurement-Assisted Quantum Communication in Spin Channels with Dephasing
• Complete structural restoring of transferred multi-qubit quantum state
• Dissipative remote-state preparation in an interacting medium
• Turnplate of quantum state
• Transfer of 0-order coherence matrix along spin-1/2 chain
• Transfer arbitrary photon state along a cavity array without initialization
• Selective dynamical decoupling for quantum state transfer
• Optimal remote restoring of quantum states in communication lines via local magnetic field
• Zeno effect of the open quantum system in the presence of 1/f noise
• Temperature-dependent remote control of polarization and coherence intensity with pure sender's initial state
• M-neighbor approximation in one-qubit state transfer along zigzag and alternating spin-1/2 chains
• Remote control of quantum correlations in two-qubit receiver via three-qubit sender
• Measurement enhances long-distance Entanglement generation in spin chains with dissipative processes
• Two-level control over quantum state creation via entangled equal-probability state
• Coherence restoring in communication line via controlled interaction with environment
• Quantum Zeno effect in the multimode quantum Rabi model