QUIQ: Quantum information processed at attosecond timescale in double quantum-dot qubits

在量子信息技术（QIT）领域，具有长相干时间和高保真门的可扩展量子位平台对于实现量子计算能力至关重要。“QUIQ”项目旨在探索在阿秒时间尺度上控制的双量子点（DQD）量子比特的潜力，方法是将QD量子信息过程建模专业知识与伦敦国王学院（KCL）阿秒量子物理组的阿秒物理专业知识相结合。通过操作阿秒时间尺度的DQD量子比特，我们可以显着减少处理时间并提高超快QIT的性能。该项目的重点是通过实施超快激光场触发的拉比振荡来研究DQD量子比特的相干性。我们的目标是实现第一个阿秒量子门--阿秒量子门。基本的阿托-q门，包括Pauli X，Y，Z和Hadamard门的实现，将为未来DQD量子比特上的阿秒量子操作提供关键的垫脚石。此外，我们将研究量子电路设计和开发量子纠错技术，以最大限度地减少DQD量子比特平台上的错误。该项目将理论研究与KCL主机组的实验能力相结合，以优化系统参数，提高相干时间，并增强对拟议DQD量子位平台的控制。此外，我们将研究量子资源，如纠缠和discord-like相关，在二分DQD量子比特。通过提出利用基于高次谐波产生的量子路径干涉技术进行阿秒量子门读出，该项目在阿秒物理和量子技术领域架起了一座桥梁，使阿秒量子信息处理取得了重大进展。

In the realm of quantum information technology (QIT), scalable qubit platforms with long coherence times and high-fidelity gates areessential for achieving quantum computational power. The project 'QUIQ' aims to explore the potential of double quantum dot(DQD) qubits controlled at attosecond timescales by combining QD quantum information process modeling expertise with theattosecond physics expertise of the attosecond quantum physics group at King's College London (KCL). By operating DQD qubits atattosecond timescales, we can significantly reduce processing time and enhance performance in ultrafast QIT. The project focuses onstudying the coherence of DQD qubits through the implementation of Rabi oscillations triggered by ultrafast laser fields. We aim torealize atto-qgates, representing the first attosecond quantum gates. The achievement of basic atto-qgates, including Pauli X, Y, Z,and Hadamard gates, will provide a crucial stepping stone towards future attosecond quantum operations on DQD qubits.Furthermore, we will investigate quantum circuit design and develop quantum error correction techniques to minimize errors in theDQD qubit platform. The project combines theoretical investigations with the experimental capabilities of the KCL host group tooptimize system parameters, improve coherence times, and enhance control over the proposed DQD qubit platform. Additionally, wewill investigate quantum resources, such as entanglement and discord-like correlations, in bipartite DQD qubits. By proposing the useof the quantum path interferometric technique based on High Harmonic Generation (HHG) for atto-qgate readout, this projectbridges the fields of attosecond physics and quantum technology, enabling significant advancements in attosecond quantuminformation processing.