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Realizing time crystals in discrete quantum few-body systems

zqyin 添加于 2018-7-24 15:22 | 896 次阅读 | 0 个评论

作者
Barfknecht RE, Rasmussen SE, Foerster A, Zinner NT
摘要
The exotic phenomenon of time translation symmetry breaking under periodic driving - the time crystal - has been shown to occur in many-body systems even in clean setups where disorder is absent. In this work, we propose the realization of time-crystals in few-body systems, both in the context of trapped cold atoms with strong interactions and of a circuit of superconducting qubits. We show how these two models can be treated in a fairly similar way by adopting an effective spin chain description, to which we apply a simple driving protocol. We focus on the response of the magnetization in the presence of imperfect pulses and interactions, and show how the results can be interpreted, in the cold atomic case, in the context of experiments with trapped bosons and fermions. Furthermore, we provide a set of realistic parameters for the implementation of the superconducting circuit.
详细资料
- 关键词: quant-ph; cond-mat.quant-gas
- 文献种类: Manual Script
- 期卷页: 2018年
- 日期: 2018-7-23
- 发布方式: arXiv e-prints
- 备注:http://arxiv.org/abs/1807.08688v1
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