Dissipation enabled quantum materials and dynamics
Abstract
"Approved for Public Release." This project aims to advance our understanding and control of novel forms of quantum matter by leveraging dissipation as a resource for quantum engineering. The research focuses on exploring and manipulating non-Hermitian quantum systems, with potential applications in quantum information science, quantum simulation, and fundamental physics. The project is structured around four key research tasks, each expanding the experimental and theoretical toolkit for dissipation-enabled quantum matter: 1) Observation of the Transverse Zeno Effect: This task aims to demonstrate how decay can alter the effective dephasing rate in quantum systems. By manipulating the coupling between a qubit and a microwave cavity, the project will explore the interplay between dissipation and decoherence, potentially leading to new methods for improving quantum coherence in processors. 2) Nonlinear Evolutionof Quantum Matter: This research will investigate the breakdown of the superposition principle in non-Hermitian quantum systems. Bystudying the evolution of postselected states under non-Hermitian Hamiltonians, the project aims to characterize and exploit nonlinear quantum dynamics for novel quantum control techniques. 3) Study of Exceptional Point Transitions in Correlations in Multiqubit Arrays: This task will explore how non-Hermitian dynamics affect quantum information scrambling and correlation spreading. Using a 9-qubit superconducting circuit platform, the research will investigate out-of-time-ordered correlators (OTOCs) and spatial correlations under various non-Hermitian conditions, seeking to uncover new phases of quantum matter governed by exceptional point transitions. 4) Non-commuting non-Hermiticities and Lorentz Group Simulations: This project aims to simulate Lorentz transformations using quantum systems, focusing on the connection between Lorentz boosts and anti-Hermitian quantum evolution. The research will explore phenomena like Thomas precession and investigate exceptional points within the Lorentz group, potentially opening new avenues for studying relativistic quantum systems.The project leverages a cutting-edge experimental platform based on superconducting circuits, including a novel 5+4=9 qubit device with tunable couplers. Key experimental techniques include parametric cavity interactions, dissipation-enabled non-reciprocal coupling, and advanced control over qubit-qubit and qubit-cavity interactions. Theoretical work will complement and guide the experimental efforts, developing frameworks for understanding non-Hermitian quantum dynamics, exceptional points in correlation functions, and the interplay between spatial and internal degrees of freedom in relativistic quantum simulations. The research has potential implications for various areas of quantum science and technology including quantum control, quantum simulation, fundamental physics, and quantum sensing. The project s outcomes are expected to contribute to the development of next-generationquantum technologies, including more robust quantum processors, novel quantum simulation platforms, and advanced quantum sensors. Moreover, the fundamental insights gained from this research may lead to new paradigms in our understanding of quantum mechanics and its intersection with other areas of physics. Through a combination of cutting-edge experimental techniques, innovative theoretical approaches, and a focus on dissipation as a resource rather than a hindrance, this project expands what can be achieved with engineered quantum systems, opening up new possibilities in the rapidly evolving field of quantum information science.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 24, 2025
- Source ID
- N000142512160
Entities
People
- Kater Murch
Organizations
- Office of Naval Research
- United States Navy
- Washington University in St. Louis