A universal shortcut method for state transfer in quantum spin systems
- URL: http://arxiv.org/abs/2312.08920v1
- Date: Thu, 14 Dec 2023 13:27:11 GMT
- Title: A universal shortcut method for state transfer in quantum spin systems
- Authors: Jian Xu, Feng Mei and Yan-Qing Zhu
- Abstract summary: We develop a protocol for constructing shortcuts to adiabaticity through the multi-state Landau-Zener approach and a stricter adiabatic condition.
Importantly, our protocol only requires a few pieces of information about the energy spectrum and adjusts the evolutionary rate of the system.
Our findings can be realized using current technology and could potentially be extended to many-body systems, dissipation cases, or Floquet processes.
- Score: 3.0540658657556174
- License: http://creativecommons.org/publicdomain/zero/1.0/
- Abstract: The need for fast and robust quantum state transfer is an essential element
in scalable quantum information processing, leading to widespread interest in
shortcuts to adiabaticity for speeding up adiabatic quantum protocols. However,
shortcuts to adiabaticity for systems with more than a few levels is
occasionally challenging to compute in theory and frequently difficult to
implement in experiments. In this work, we develop a protocol for constructing
shortcuts to adiabaticity through the multi-state Landau-Zener approach and a
stricter adiabatic condition. Importantly, our protocol only requires a few
pieces of information about the energy spectrum and adjusts the evolutionary
rate of the system, making it both generic for theoretical models and friendly
for experimental implementation. As examples, we apply our protocol to state
transfer in the non-Hermitian Su-Schrieffer-Heeger (SSH) model and the
topological Thouless pump models and find that it can speed up the manipulation
speed while remaining robust to Hamiltonian errors. Furthermore, our findings
can be realized using current technology and could potentially be extended to
many-body systems, dissipation cases, or Floquet processes. Overall, the
proposed shortcut protocol offers a promising avenue for enhancing the
efficiency and reliability of quantum state transfer protocols.
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