Generation of phonon quantum states and quantum correlations among single photon emitters in hexagonal boron nitride

IF 5.8 2区 物理与天体物理 Q1 OPTICS EPJ Quantum Technology Pub Date : 2024-11-05 DOI:10.1140/epjqt/s40507-024-00286-2
Hugo Molinares, Fernanda Pinilla, Enrique Muñoz, Francisco Muñoz, Vitalie Eremeev
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Abstract

Hexagonal boron nitride exhibits two types of defects with great potential for quantum information technologies: single-photon emitters (SPEs) and one-dimensional grain boundaries hosting topologically-protected phonons, termed as topologically-protected phonon lines (TPL). Here, by means of a simple effective model and density functional theory calculations, we show that it is possible to use these phonons for the transmission of information. Particularly, a single SPE can be used to induce single-, two- and qubit-phonon states in the one-dimensional channel, and (ii) two distant SPEs can be coupled by the TPL that acts as a waveguide, thus exhibiting strong quantum correlations. We highlight the possibilities offered by this material-built-in nano-architecture as a phononic device for quantum information technologies.

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六方氮化硼中声子量子态的产生和单光子发射器之间的量子相关性
六方氮化硼具有两类对量子信息技术具有巨大潜力的缺陷:单光子发射器(SPE)和容纳拓扑保护声子(称为拓扑保护声子线(TPL))的一维晶界。在这里,通过一个简单有效的模型和密度泛函理论计算,我们证明了利用这些声子进行信息传输是可能的。特别是,单个 SPE 可用于在一维通道中诱导单比特、双比特和比特声子态;(ii) 两个相距甚远的 SPE 可通过充当波导的 TPL 耦合,从而表现出很强的量子相关性。我们强调了这种材料内置纳米结构作为量子信息技术的声子器件所带来的可能性。
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来源期刊
EPJ Quantum Technology
EPJ Quantum Technology Physics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
7.70
自引率
7.50%
发文量
28
审稿时长
71 days
期刊介绍: Driven by advances in technology and experimental capability, the last decade has seen the emergence of quantum technology: a new praxis for controlling the quantum world. It is now possible to engineer complex, multi-component systems that merge the once distinct fields of quantum optics and condensed matter physics. EPJ Quantum Technology covers theoretical and experimental advances in subjects including but not limited to the following: Quantum measurement, metrology and lithography Quantum complex systems, networks and cellular automata Quantum electromechanical systems Quantum optomechanical systems Quantum machines, engineering and nanorobotics Quantum control theory Quantum information, communication and computation Quantum thermodynamics Quantum metamaterials The effect of Casimir forces on micro- and nano-electromechanical systems Quantum biology Quantum sensing Hybrid quantum systems Quantum simulations.
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