利用耦合到两条银纳米线的四个 InGaAs 量子点实现所有单ubit 栅极的可行性

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2024-07-24 DOI:10.1007/s11468-024-02415-0

Chol-Min Kim, Nam-Chol Kim, Myong-Chol Ko, Ju-Song Ryom, Su-Ryon Ri

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引用次数: 0

摘要

我们提出了用四个 InGaAs 量子点（QDs）耦合到 T 型等离子体波导（PWs）的所有单量子比特逻辑门，其中二进制量子比特由光子频率编码。我们的研究结果表明，通过适当调整 QD 之间的距离、耦合强度和频率失谐，可以实现任意的单量子比特门。我们通过实空间方法从理论上研究了各种方案，并通过各种参数的保真度估算了所提出方案的可行性。在现有技术和高保真条件下，我们提出的方案是可行的，为构建量子计算和量子信息处理开辟了广阔的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Feasibility of All Single-Qubit Gates with Four InGaAs Quantum Dots Coupled to Two Silver Nanowires

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Feasibility of All Single-Qubit Gates with Four InGaAs Quantum Dots Coupled to Two Silver Nanowires

We have proposed all single-qubit logic gates with four InGaAs quantum dots (QDs) coupled to a T-type plasmonic waveguides (PWs) wherein binary qubits are encoded by frequency of photons. Our results reveal that by adjusting distance between QDs, coupling strength and frequency detuning in a proper manner, an arbitrary single-qubit gates can be achieved. We investigated schemes theoretically via the real-space approach and estimated feasibilities of a proposed one by fidelities for a variety of parameters. Under the present technology and high fidelities, our proposed schemes are feasible, opening the promising perspectives for constructing quantum computation and quantum information processing.

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.