Bulletin of the American Physical Society
2020 Fall Meeting of the APS Division of Nuclear Physics
Volume 65, Number 12
Thursday–Sunday, October 29–November 1 2020; Time Zone: Central Time, USA
Session LH: LH Mini-Symposium: Quantum Information Science and Technology for Nuclear Physics II |
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Chair: Zohreh Davoudi, University of Maryland |
Saturday, October 31, 2020 10:30AM - 10:42AM |
LH.00001: Electric Field Sensing for EDM Experiments. Douglas Beck Nitrogen vacancy diamonds have been proposed for various quantum information devices and were used in a sensitive Bell's theorem test [1]. We describe the status of an electric field sensor using a quantum interference mechanism to enhance its sensitivity. Taking advantage of the linear Stark effect in nitrogen-vacancy diamonds, we use the narrow spectral features associated with the dark states generated via a three-level system (electromagnetically-induced transparency) to measure the energy shifts. The ensemble resolution is typically limited by inhomogeneous broadening caused by the natural $^{\mathrm{13}}$C admixture in the diamond. In one implementation, an all-optical scheme can be realized to provide a compact, fiberized sensing package operating at cryogenic temperatures. [1] B. Hensen, H. Bernien, A. E. Dreau, A. Reiserer, N. Kalb, et al., \textit{Loophole free Bell inequality violation using electron spins separated by 1.3 kilometres}, Nature \textbf{526}, 682 (2015). [Preview Abstract] |
Saturday, October 31, 2020 10:42AM - 10:54AM |
LH.00002: Orbital entanglement in ab-initio self-consistent calculations of light nuclei Caroline Robin, Martin Savage, Nathalie Pillet The many-body approach known as Multiconfiguration Self-Consistent Field method has been used for decades in atomic physics and quantum chemistry. In this approach, both the expansion coefficients of the many-body state and the underlying single-particle basis are determined simultaneously via a variational principle. In the past, we have adapted this method to the description of atomic nuclei, and recently have implemented two-body interactions derived from chiral effective theory, opening the way to ab-initio self-consistent calculations of nuclei. In this talk we present properties of ground and excited states of light nuclei obtained within this framework. The quality of the single-particle basis is investigated in terms of entanglement between single-nucleon states. In particular, we explore relations between the convergence of observables and entanglement features. [Preview Abstract] |
Saturday, October 31, 2020 10:54AM - 11:06AM |
LH.00003: Entanglement of Collective Neutrino Oscillations on a Quantum Computer Benjamin Hall, Alessandro Roggero, Allesandro Baroni, Joseph Carlson We simulate the time evolution of collective neutrino oscillations on a quantum computer using a short-depth Trotter expansion. From the final state of the quantum computer we compute the probability of each neutrino in being in one of two neutrino flavors over time. We also characterize the change in pairwise entanglement of the system over time by computing two-qubit state tomography and extracting from this the the concurrence between pairs of neutrinos. Through this research, we present a promising way to characterize the entanglement of collective neutrino oscillations through the use of quantum computers. [Preview Abstract] |
Saturday, October 31, 2020 11:06AM - 11:18AM |
LH.00004: Toward First-Principles Quantum Simulations of Heavy-Ion Collisions Scott Lawrence First-principles lattice QCD simulations are unable to study much of the heavy-ion collision process due to the sign problem associated to real-time calculations. The advent of (small-scale, noisy) quantum computers provides a possible way around this: quantum computers are most naturally able to study precisely those real-time processes that are most difficult for the Euclidean lattice. A quantum simulation of an entire heavy-ion collision, however, is prohibitively expensive. Long before simulations of an entire heavy-ion process become accessible, we face the possibility of studying certain parts in isolation. In particular, the fluid dynamics of the quark-gluon plasma near equilibrium (e.g. viscosity), and the real-time dynamics of hadronization, are promising targets for early quantum simulations of lattice QCD. This talk outlines recent progress toward practical simulations of QCD on a quantum computer. [Preview Abstract] |
Saturday, October 31, 2020 11:18AM - 11:30AM |
LH.00005: Simulation of the 1D lattice Schwinger model on a trapped-ion quantum computer Nhung Hong Nguyen, Andrew Shaw, Yingyue Zhu, Cinthia Huerta Alderete, Zohreh Davoudi, Norbert Linke Simulating lattice gauge theories is a promising application of quantum computers. The Schwinger model (1+1D QED) is a simple but insightful lattice gauge model that can be used as a testbed for different quantum hardware. By taking advantage of long-range interactions and the high level of control offered by trapped ion systems, the bosonic gauge degree of freedom can be mapped to spin-spin interactions, allowing the simulation of the full Hilbert space of the Schwinger model. In this talk, we introduce our trapped ion quantum computer and present recent results from simulating the dynamics of one, two and three spatial sites for this model using a fully digital approach. The dynamics of the system are studied by probing the vacuum persistent amplitude, the particle density and the electric field density. We discuss the effect of term ordering in Trotter expansion of the time evolution operator and noise mitigation used for the experiment. [Preview Abstract] |
Saturday, October 31, 2020 11:30AM - 11:42AM |
LH.00006: SU(2) non-Abelian gauge field theory in one dimension on digital quantum computers Natalie Klco, Jesse Stryker, Martin Savage This talk will present the results of a dynamical, multi-plaquette calculation of one-dimensional SU(2) lattice gauge theory implemented on IBM's quantum hardware. By leveraging local gauge symmetry to analytically incorporate the angular momentum alignment variables and to provide computational flexibility, plaquette operators are specifically designed for qubit implementation on quantum registers encoding the link total angular momentum. [Preview Abstract] |
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