RAISE: TAQS: Two-Photon Quantum Photonic Logic Gates Enabled by Photonic Bound States

RAISE：TAQS：光子束缚态启用的双光子量子光子逻辑门

• 批准号: 1838996
• 负责人: Jung-Tsung Shen
• 金额: $ 100万
• 依托单位: Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-15 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1838996&HistoricalAwards=false
• 关键词: RAISE; TAQS; Two; Photon; Quantum

Quantum information science exploits quantum mechanical phenomena such as superposition and entanglement to improve classical communication, computation, information processing, and precision measurement. Quantum technology is expected to play a decisive role in enhancing national security and bolstering further scientific discovery. In quantum information processing, single-quantum bit (qubit) operations are not sufficient to unlock all the computational power that is endowed by a collection of qubits. Hence it is necessary and in fact sufficient to add a two-qubit gate such as a controlled-phase gate to a finite set of single-qubit gates to achieve what no longer can be efficiently simulated on a classical computer. In optical quantum computation, photonic qubits are used as information carriers due to their low-noise, long coherence times, light-speed transmission and ease of manipulation at the single-qubit level using standard optical components. To date, only probabilistic two-qubit photonic logic gates based on linear optics and photon detectors have been demonstrated. The implementation, however, is associated with substantial resource overhead and demands stringent technological requirements which are still challenging today. This project addresses the fundamental challenges by developing a deterministic controlled-phase gate to realize the full potential of quantum computation. The educational and outreach activities will train the next-generation quantum scientists and engineers to accelerate the pace of quantum information science and applications. Technical Abstract:The goal of this work is to develop a new technological approach to a controlled-phase gate for two photonic qubits using an entirely novel approach based on the generation of photonic dimer states, a chiral nano-photonic waveguide, and a single dipole emitter. The tight optical confinement in the transverse direction in the nanophotonic waveguide allows one to place the dipole emitter at the chiral point and achieve strong coupling between the photon and the emitter such that the scattered photons couple efficiently to the forward but not the backward-propagating mode. The correlated photons form the photonic dimers, which are the bound states of photons and give rise to a non-trivial transmission pi phase shift. The validation of the controlled-phase gate will be achieved using a novel experimental design based on an integrated waveguide approach coupled with number-resolved photon detectors. The demonstration of the photonic dimer state and the corresponding 180-degree phase shift associated with the state with both photons interacting with the dipole emitter will be a major step forward in demonstrating the potential of photonic quantum computing.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

量子信息科学利用了量子机械现象，例如叠加和纠缠，以改善经典的沟通，计算，信息处理和精确测量。量子技术有望在增强国家安全和进一步的科学发现方面发挥决定性作用。在量子信息处理中，单量子位（Qubit）操作不足以解锁所有量子组收集的计算能力。因此，实际上有必要在有限的单量门门中添加两个Quibent的门（例如受控遗相门），以实现不再可以在经典计算机上有效模拟的东西。在光学量子计算中，光子Qubits由于使用标准光学组件而在单QUIT级别上的低噪声，较长的连贯性时间，光速传输和易于操作，因此将光子量动数用作信息载体。迄今为止，仅证明了基于线性光学和光子检测器的概率两分射光子逻辑门。但是，该实施与大量资源开销有关，并要求当今仍然具有挑战性的严格技术要求。该项目通过开发确定性控制的相位门来实现量子计算的全部潜力来解决基本挑战。教育和外展活动将培训下一代量子科学家和工程师，以加快量子信息科学和应用的速度。 技术摘要：这项工作的目的是使用基于光子二聚体状态的产生，手性纳米光子波导和单个偶极发射器的完全新颖的方法开发两个光子量子量的受控式栅极的新技术方法。在纳米量波导的横向方向上的紧密光学限制使一个人可以将偶极发射器放置在手性点上，并在光子和发射极之间实现强耦合，从而使散射的光子夫妇有效地向前，而不是向前的，但不向后促进模式。相关的光子形成光子二聚体，该光子二聚体是光子的结合状态，并引起非平凡的透射PI相移。将使用基于集成波导方法与数字分辨光子检测器相结合的新型实验设计来实现受控阶段门的验证。光子二聚体状态和与状态相关的相应的180度相移的证明与两个光子相互作用将是展示光子量子计算的潜力的重要一步。该奖项反映了NSF的法定任务，并通过使用基金会的知识优点和广泛的影响来评估NSF的法定任务。

项目成果

Photonic Fock state generation using superradiance

使用超辐射产生光子福克态

• DOI: 10.1364/ol.468481
• 发表时间: 2022
• 期刊: Optics Letters
• 影响因子: 3.6
• 作者: Liu, Qihang;Shen, Jung-Tsung
• 通讯作者: Shen, Jung-Tsung

Proposal for chip-scale generation and verification of photonic dimers

光子二聚体芯片级生成和验证的提案

• DOI: 10.1063/5.0073090
• 发表时间: 2021
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Kim, Juhyeon;Mastropietro, Donato;Steel, Duncan;Shen, Jung-Tsung;Ku, Pei-Cheng
• 通讯作者: Ku, Pei-Cheng

Optically Controlled Spin Gate Using GaN Quantum Dots

• DOI: 10.1021/acsphotonics.2c00083
• 发表时间: 2022-04
• 期刊: ACS Photonics
• 影响因子: 7
• 作者: Juhyeon Kim;Zachary Croft;D. Steel;P. Ku

Two-photon controlled-phase gates enabled by photonic dimers

• DOI: 10.1103/physreva.103.052610
• 发表时间: 2021-05-21
• 期刊: PHYSICAL REVIEW A
• 影响因子: 2.9
• 作者: Chen, Zihao;Zhou, Yao;Steel, Duncan
• 通讯作者: Steel, Duncan