Robust and Reliable Transfer of a Quantum State Through a Spin Chain

Abstract

We present several protocols for reliable quantum state transfer through a spin chain. We use a simple two-spin encoding to achieve a remarkably high fidelity transfer for an arbitrary quantum state. The fidelity of the transfer also decreases very slowly with increasing chain length. We find that we can also increase the reliability by taking advantage of a local memory and/or confirm transfer using a second spin-chain.

5 pages, 4 figures

References in corpus (10)

• Perfect Transfer of Arbitrary States in Quantum Spin Networks
• The Propagation of Quantum Information Through a Spin System
• Electron wavepacket propagation and entanglement in a chain of coupled quantum dots
• Simulations of Information Transport in Spin Chains
• Improved transfer of quantum information using a local memory
• Optimal quantum chain communication by end gates
• Exploiting Quench Dynamics in Spin Chains for Distant Entanglement and Quantum Communication
• Perfect mirror transport protocol with higher dimensional quantum chains
• Quantum communication via a continuously monitored dual spin chain
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Cited by in corpus (10)

• Universal Existence of Exact Quantum State Transmissions in Interacting Media
• Quantum-state transfer in spin chains via isolated resonance of terminal spins
• Quantum state transmission in a cavity array via two-photon exchange
• Almost exact state transfer in a spin chain via pulse control
• High Fidelity State Transfer Over an Unmodulated Linear XY Spin Chain
• Fault-Tolerant Exact State Transmission
• Duplex quantum communication through a spin chain
• Perfect Function Transfer in two- and three- dimensions without initialization
• Quantum states experimentally achieving high-fidelity transmission over a spin chain
• Quantum correlations in a cluster spin model with three-spin interactions