Optimal Control for Fast and Robust Generation of Entangled States in Anisotropic Heisenberg Chains

Zhang, Xiong-Peng; Shao, Bin; Zou, Jian

doi:10.1007/s10773-017-3301-2

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“…Similarly, entanglement improvement in quantum spin system is another crucial site of work. While there are methods of improving long-distance entanglement such as the use of quantum mediators -for example, sets of antiferromagnetically coupled spin dimers [28] -we focus on the use of control field configurations [29][30][31]. The use of control fields has a dual advantage.…”

Section: Introductionmentioning

confidence: 99%

Transforming spin chains with a continuous driving field

Soomro¹,

Chaudhry²

2021

Preprint

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A continuous, sinusoidal control field is used to suitably transform quantum spin chains. In particular, we are able to transform the quantum Ising chain to the quantum XY model, and the XY model to the XYZ spin chain. Our applied control field can also mitigate the effect of noise on the spin chain. We show how these spin chain transformations can be useful for quantum state transfer as well as entanglement generation.

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