Arbitrary entangled state transfer via a topological qubit chain
- URL: http://arxiv.org/abs/2111.05561v1
- Date: Wed, 10 Nov 2021 07:57:27 GMT
- Title: Arbitrary entangled state transfer via a topological qubit chain
- Authors: Chong Wang, Linhu Li, Jiangbin Gong and Yu-xi Liu
- Abstract summary: We show that an arbitrary entangled state can be encoded in the corresponding edge states, and then adiabatically transferred from one end to the other of the chain.
Our approach is robust against both the qubit-qubit coupling disorder and the evolution time disorder.
For the concreteness of discussions, we assume that such a chain is constructed by an experimentally feasible superconducting qubit system.
- Score: 5.581919120140629
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum state transfer is one of the basic tasks in quantum information
processing. We here propose a theoretical approach to realize arbitrary
entangled state transfer through a qubit chain, which is a class of extended
Su-Schrieffer-Heeger models and accommodates multiple topological edge states
separated from the bulk states. We show that an arbitrary entangled state, from
$2$-qubit to $\mathcal{N}$-qubit, can be encoded in the corresponding edge
states, and then adiabatically transferred from one end to the other of the
chain. The dynamical phase differences resulting from the time evolutions of
different edge states can be eliminated by properly choosing evolution time.
Our approach is robust against both the qubit-qubit coupling disorder and the
evolution time disorder. For the concreteness of discussions, we assume that
such a chain is constructed by an experimentally feasible superconducting qubit
system, meanwhile, our proposal can also be applied to other systems.
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