CAREER: Circuit Quantum Optics with Piezoelectric Surface Acoustic Waves

职业：具有压电表面声波的电路量子光学

• 批准号: 2142846
• 负责人: Johannes Pollanen
• 金额: $ 50万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2027-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2142846&HistoricalAwards=false
• 关键词: CAREER; Circuit; Quantum; Optics; Piezoelectric

Hybrid quantum systems and technologies exhibiting exciting properties and novel functionality can be created by bringing together quantum circuits and devices with fundamentally different, but complementary, properties. This is particularly true of hybrid systems based on superconducting quantum bits (qubits) coupled to piezoelectric surface acoustic wave (SAW) devices. These engineered systems, in which quantum information stored in the qubit can be controllably coupled to the microscopic surface waves of a piezoelectric crystal, are an ideal platform for understanding the exotic behavior of strongly-coupled synthetic quantum systems. Additionally, SAW devices are already a key component in many classical electronic devices such as cell phones, touch screens and chemical sensors. Given their wide applicability in classical electronics it is natural to ask if SAW-based devices might find similar success in the field of quantum information science (QIS). Developing piezoelectric SAW-devices for quantum applications is in its infancy, with much uncharted territory ripe for the development of new technologies and exciting discoveries. By harnessing the controlled quantum behavior of superconducting qubits, the proposed program will investigate the fundamental properties of SAW-based quantum systems and advance the development of next-generation technologies for quantum sensing, computation and communication. The program will also advance the education and research experiences of a diverse group of graduate students and strengthen the QIS educational initiatives that the principal investigator (PI) is developing at Michigan State University (MSU). As the Associate Director of the MSU Center for Quantum Computing, Science and Engineering the PI is also working to enhance the diversity of QIS researchers at MSU by helping to recruit graduate and undergraduate students from under-represented groups and provide support to find local research opportunities and private sector internships for the Center’s junior QIS researchers.This program is focused on the experimental investigation of novel regimes of circuit quantum optics using hybrid quantum systems composed of superconducting circuit-based qubits coupled to piezoelectric surface acoustic wave (SAW) devices. The projects cover new topics ranging from quantum acoustic bath engineering to the generation of squeezed states of high-frequency SAW piezo-phonons. Transmon qubits coupled to precisely designed SAW-resonators will leverage controllable levels of acoustic dissipation to autonomously stabilize coherent qubit superpositions and engineer exotic quantum states via acoustic loss. Additionally non-classical states of SAWs will be transduced from non-classical states of microwave photons using parametric Josephson junction devices, creating the opportunity to investigate non-Markovian properties of itinerant piezo-phonons coupled to superconducting qubits. The program will also explore the possibility of developing novel SAW-based devices with qubits beyond transmons (i.e. via the incorporation of flux-qubits or fluxonium-based devices). The realization and understanding of these “quantum acoustic” systems and devices will greatly expand the fundamental knowledge of highly-controlled synthetic quantum systems and how they might realize new quantum technologies.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.

通过将具有根本不同但互补性质的量子电路和设备结合在一起，可以创建表现出令人兴奋的性质和新功能的混合量子系统和技术。这对于基于超导量子比特（qubit）耦合到压电表面声波（SAW）设备的混合系统尤其如此。这些工程系统，其中存储在量子比特中的量子信息可以可控地耦合到压电晶体的微观表面波，是理解强耦合合成量子系统的奇异行为的理想平台。此外，SAW器件已经成为许多经典电子设备（如手机、触摸屏和化学传感器）的关键部件。考虑到它们在经典电子学中的广泛适用性，人们自然会问，基于SAW的设备是否会在量子信息科学（QIS）领域取得类似的成功。开发用于量子应用的压电SAW器件尚处于起步阶段，新技术和令人兴奋的发现的发展还有许多未知的领域。通过利用超导量子比特的受控量子行为，该计划将研究基于SAW的量子系统的基本特性，并推动下一代量子传感、计算和通信技术的发展。该计划还将推进研究生的多样化群体的教育和研究经验，并加强首席研究员（PI）正在密歇根州立大学（MSU）开发的QIS教育计划。作为MSU量子计算中心的副主任，科学与工程PI还致力于提高QIS研究人员在密歇根州立大学的多样性，帮助招聘研究生和本科生从下，代表团体，并提供支持，以寻找当地的研究机会和私营部门的实习中心的初级QIS研究人员。该计划的重点是新制度的实验研究，电路量子光学，其使用由耦合到压电表面声波（SAW）装置的基于超导电路的量子位组成的混合量子系统。这些项目涵盖了从量子声浴工程到高频SAW压电声子压缩态的产生等新课题。耦合到精确设计的SAW谐振器的量子比特将利用可控的声耗散水平来自主稳定相干量子比特叠加，并通过声损耗来设计奇异量子态。此外，SAW的非经典状态将使用参量约瑟夫森结器件从微波光子的非经典状态转换，从而创造了研究与超导量子比特耦合的巡回压电声子的非马尔可夫性质的机会。该计划还将探索开发具有超越transmons的量子位的新型SAW器件的可能性（即通过并入通量量子位或基于通量的器件）。这些“量子声学”系统和设备的实现和理解将极大地扩展高度可控的合成量子系统的基础知识，以及它们如何实现新的量子技术。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Quantum acoustic Fano interference of surface phonons

表面声子的量子声法诺干涉

• DOI: 10.1103/physreva.108.l010601
• 发表时间: 2023
• 期刊: Physical Review A
• 影响因子: 2.9
• 作者: Kitzman, J. M.;Lane, J. R.;Undershute, C.;Beysengulov, N. R.;Mikolas, C. A.;Murch, K. W.;Pollanen, J.
• 通讯作者: Pollanen, J.