Almost-exact state transfer by leakage-elimination-operator control in a non-Markovian environment

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Abstract
We investigate the feasibility of using an effective pulse control method to realize an almost exact state transmission through a uniform chain where the communication channel is immersed in a quantum environment. This pulse control is treated in a nonperturbative fashion, allowing for a more precise view. Using the non-Markovian quantum state diffusion equation, we calculate the dynamics of the transmission fidelity. The results show that the memory effects of the environment can support an effective transmission control that can be boosted under a non-Markovian environment. Our scheme provides another way to realize almost exact state transmission in a spin chain system.
Funding Information
  • National Natural Science Foundation of China (11475160, 61575180)
  • Natural Science Foundation of Shandong Province (ZR2014AM023, ZR2014AQ026)
  • China Scholarship Council (201606335034)
  • European Regional Development Fund (PGC2018-101355- B-I00)

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