Conclusive and arbitrarily perfect quantum-state transfer using parallel spin-chain channels
Conclusive and arbitrarily perfect quantum-state transfer using parallel spin-chain channels
We suggest a protocol for perfect quantum communication through spin-chain channels. By combining a dual-rail encoding with measurements only at the receiving end, we can get conclusively perfect state transfer, whose probability of success can be made arbitrarily close to unity. As an example of such an amplitude-delaying channel, we …