Bulletin of the American Physical Society
APS April Meeting 2021
Volume 66, Number 5
Saturday–Tuesday, April 17–20, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session H07: Applications of Quantum ComputingInvited Live
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Sponsoring Units: GFB DNP Chair: Sofia Quaglioni, LLNL |
Sunday, April 18, 2021 10:45AM - 11:12AM Live |
H07.00001: Quantum simulations with trapped ions Invited Speaker: Zohreh Davoudi Trapped ions quantum simulators have shown incredible success in simulating quantum many-body systems, and in certain problems, have exceeded what is possible with classical simulations. Given the prevalence of large-scale simulations of strongly-interacting many-body problems in nuclear and high-energy physics, it is natural to ask if such quantum simulators can provide an advantage over current methods in these fields as well. Since many-body interactions in nuclear and high-energy physics, either described by quantum field theories or nuclear effective theories, are more complex than what can currently be realized in such quantum simulators, it is important to carefully design and commission dedicated simulators with enhanced capabilities to address these problems. In this talk, I will review some of the developments in this area in recent years and will comment on the path forward in the upcoming years. [Preview Abstract] |
Sunday, April 18, 2021 11:12AM - 11:39AM Live |
H07.00002: Nuclear Scattering with Quantum Computing Invited Speaker: Alessandro Roggero Recent years have seen an explosion of interest in Quantum Computing thanks to dramatic advances in the experimental realization of quantum devices. One of the major expected advantages of quantum computation with respect to it's classical counterpart is the ability to simulate the real-time dynamics of strongly coupled many-body systems. In this talk I will introduce the main ideas behind the study of nuclear scattering processes on quantum devices and discuss the similarities with classical computational schemes designed to compute response functions. I will also present some recent experimental result on current-generation quantum computers. [Preview Abstract] |
Sunday, April 18, 2021 11:39AM - 12:06PM Live |
H07.00003: Hybrid Digital/Analog Quantum Simulations via Optimal Control Invited Speaker: Kyle Wendt Quantum computers hold the promise to open a new era in simulating quantum many-body systems. This era will bring us to a deeper and more complete understanding of dynamics and responses of strongly interacting systems, such as atomic nuclei, and their interactions with other forms of matter. However, current digital/universal quantum computers are too noisy to execute the formal algorithms that have been proposed to enact such simulations. Instead, hybrid digital-analog quantum computation, where the discrete quantum processor primitives are tailored to both the theoretical system being simulated and the physical quantum processor performing the simulations offers a path to useful predictions that can be realized within the near-term noisy intermediate-scale quantum (NISQ) era. Using optimal control to implement such a hybrid simulation, this approach is applied to compute the real-time evolution of the spin-dynamics of nucleons in classical numerical simulations of a quantum computer and for two nucleons performed on Lawrence Livermore National Laboratory’s Quantum Design and Integration Testbed (QuDIT) platform. I will discuss our recent measurements on QuDIT and how we are extending this approach to larger systems and prospects for applying it on other quantum platforms. [Preview Abstract] |
Sunday, April 18, 2021 12:06PM - 12:33PM Live |
H07.00004: Quantum Algorithms for Lattice Gauge Theories Invited Speaker: Natalie Klco A beautiful description of nature’s fundamental forces has been devised through gauge fields introducing local symmetries or conserved charges. Though classical techniques continue to provide invaluable information on the emergent properties of gauge field theories relevant to experimental programs throughout the scientific domains, some experimentally relevant parameter regimes e.g., where coherent dynamics demand exponentially large Hilbert spaces, remain beyond current or foreseeable computational capabilities. While leveraging quantum architectures directly within a computational framework is expected to explore such parameter regimes more naturally, the inefficient utilization of Hilbert space in the presence of local symmetries demands careful considerations in the presence of quantum noise. During this talk, we will discuss current strategies and perspectives for representing quantum fields, from scalars to SU(3) Yang-Mills, on qubit degrees of freedom and controllably performing subsequent dynamical evolutions. [Preview Abstract] |
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