Quantum Communication in Spin Systems With Long-Range Interactions
arXiv:quant-ph/0603148 · doi:10.1103/PhysRevA.74.012321
Abstract
We calculate the fidelity of transmission of a single qubit between distant sites on semi-infinite and finite chains of spins coupled via the magnetic dipole interaction. We show that such systems often perform better than their Heisenberg nearest-neighbour coupled counterparts, and that fidelities closely approaching unity can be attained between the ends of finite chains without any special engineering of the system, although state transfer becomes slow in long chains. We discuss possible optimization methods, and find that, for any length, the best compromise between the quality and the speed of the communication is obtained in a nearly uniform chain of 4 spins.
15 pages, 8 eps figures, updated references, corrected text and corrected figs. 1, 4 and 5
References in corpus (17)
- Quantum Cryptography
- Experimental quantum teleportation
- Experimental Realization of Teleporting an Unknown Pure Quantum State via Dual Classical and Einstein-Podolski-Rosen Channels
- Quantum Communication Through an Unmodulated Spin Chain
- Perfect state transfer in quantum spin networks
- A toolbox for lattice spin models with polar molecules
- Perfect Transfer of Arbitrary States in Quantum Spin Networks
- Conclusive and arbitrarily perfect quantum state transfer using parallel spin chain channels
- The Propagation of Quantum Information Through a Spin System
- Unmodulated spin chains as universal quantum wires
- Perfect State Transfer, Effective Gates and Entanglement Generation in Engineered Bosonic and Fermionic Networks
- Perfect quantum state transfer with randomly coupled quantum chains
- Perfect State Transfer: Beyond Nearest-Neighbor Couplings
- High efficiency transfer of quantum information and multi-particle entanglement generation in translation invariant quantum chains
- Repeat-Until-Success quantum computing using stationary and flying qubits
- From perfect to fractal transmission in spin chains
- Excitation and Entanglement Transfer Versus Spectral Gap
Cited by in corpus (32)
- Quantum Communication through Spin Chain Dynamics: an Introductory Overview
- Coherent Excitation Transfer in a Spin Chain of Three Rydberg Atoms
- Perfect state transfer in long-range interacting spin chains
- Simulations of Information Transport in Spin Chains
- Entanglement area laws for long-range interacting systems
- Optimal quantum chain communication by end gates
- The operator Lévy flight: light cones in chaotic long-range interacting systems
- Quantum state transfer and time-dependent disorder in Quantum Chains
- Perfect state transfer over distance-regular spin networks
- NMR multiple quantum coherences in quasi-one-dimensional spin systems: Comparison with ideal spin-chain dynamics
- Transfer of d-Level quantum states through spin chains by random swapping
- Transport of Quantum Correlations across a spin chain
- Transport and entanglement growth in long-range random Clifford circuits
- Freezing distributed entanglement in spin chains
- Dimensionality-enhanced quantum state transfer in long-range interacting spin systems
- Entanglement generation and perfect state transfer in ferromagnetic qubit chains
- Analysis and minimization of bending losses in discrete quantum networks
- Knitting distributed cluster state ladders with spin chains
- Quantum transitions of the XY model with long-range interactions on the inhomogenous periodic chain
- Entanglement Transfer via XXZ Heisenberg chain with DM Interaction
- The Dual Roles of Quantum Discord in a Non-demolition Probing Task
- Long-range interactions and information transfer in spin chains
- Dynamic generation of entangling wave packets in XY spin system with decaying long range couplings
- An impurity-induced gap system as a quantum data bus for quantum state transfer
- Long-distance Entanglement generation by Local Rotational Protocols in spin chains
- Exactly solvable dynamics and signatures of integrability in an infinite-range many-body Floquet spin system
- Mesoscopic Spin Systems as Quantum Entanglers
- Signatures of Integrability and Exactly Solvable Dynamics in an Infinite-Range Many-Body Floquet Spin System
- Measurement enhances long-distance Entanglement generation in spin chains with dissipative processes
- Creating and preserving multi-partite entanglement with spin chains
- Environment-Mediated Quantum State Transfer
- Conclusive quantum-state transfer with a single randomly coupled spin chain