The ability to wirelessly power electrical devices is becoming of greater urgency as a component energy conservation and sustainability efforts. Due health safety concerns, most wireless transfer (WPT) schemes utilize very low frequency, quasi-static, magnetic fields; occurs via magneto-inductive (MI) coupling between conducting loops serving transmitter receiver. At the "long range" regime - referring distances larger than diameter largest loop WPT efficiency in free space falls off...

Controlling the spread of correlations in quantum many-body systems is a key challenge at heart science and technology. Correlations are usually destroyed by dissipation arising from coupling between system its environment. Here, we show that can instead be used to engineer wide variety spatio-temporal correlation profiles an easily tunable manner. We describe how with any translationally-invariant spatial profile realized cold atoms trapped optical cavity. A uniform external field choice...

University research, often funded by the federal government, is a linchpin of national innovation. This academic research drives advances in fundamental science, technology with long development horizons, and public priorities such as artificial intelligence, climate technologies, quantum technologies. Universities produce not only ideas but also people driving scientific technological Despite being key enablers high-impact graduate students seldom transform their discoveries into commercial...

The challenge of understanding the dynamics a mobile impurity in an interacting quantum many-body medium comes from necessity including entanglement between and excited states environment wide range energy scales. In this Letter, we investigate motion finite mass injected into three-dimensional Bose fluid as it starts shedding Bogoliubov excitations. We uncover transition impurity's velocity crosses critical value that depends on strength interaction bosons well recoil energy. find injection...

We study the spatiotemporal spreading of correlations in an ensemble spins due to dissipation characterized by short- and long-range spatial profiles. Such emission channels can be synthesized with tunable profiles lossy cavity QED experiments using a magnetic field gradient Raman drive multiple sidebands. consider systems initially uncorrelated state, find that widen contract novel pattern intimately related both dissipative nature dynamical channel its profile. Additionally, we make...

Abstract The control of quasi-static magnetic fields is considerable interest in applications including the reduction electromagnetic interference (EMI), wireless power transfer (WPT) and resonance imaging (MRI). shielding static or typically accomplished through use inherently materials with large permeability, such as ferrites, used sometimes combination metallic sheets and/or active field cancellation. Ferrite materials, however, can be expensive, heavy brittle. Inspired by recent...

When a mobile impurity interacts with surrounding bath of bosons, it forms polaron. Numerous methods have been developed to calculate how the energy and effective mass polaron are renormalized by medium for equilibrium situations. Here, we address much less studied nonequilibrium regime investigate polarons form dynamically in time. To this end, develop time-dependent renormalization-group approach which allows calculations all dynamical properties system takes into account effects quantum...

Simulations of nuclear magnetic resonance (NMR) experiments can be an important tool for extracting information about molecular structure and optimizing experimental protocols but are often intractable on classical computers large molecules such as proteins zero-field NMR. We demonstrate the first quantum simulation NMR spectrum, computing spectrum methyl group acetonitrile using four qubits a trapped-ion computer. reduce sampling cost by order magnitude compressed sensing techniques. show...

The Boltzmann equation is a powerful theoretical tool for modeling the collective dynamics of quantum many-body systems subject to external perturbations. Analysis gives access linear response properties including modes and transport coefficients, but often proves intractable due computational costs associated with multidimensional integrals describing collision processes. Here, we present method resolve this bottleneck, enabling study broad class that appear in fundamental science contexts...

Exploring operational regimes of many-body cavity QED with multilevel atoms remains an exciting research frontier for their enhanced storage capabilities intralevel quantum correlations. In this work, we consider experimentally feasible model describing a four-level system, where each those levels is formed from combination different spin and momentum states ultracold in cavity. The resulting comprises pair Dicke Hamiltonians constructed pseudospin operators, effectively capturing two...

We investigate the behavior of a finite-momentum impurity immersed in weakly interacting three-dimensional Bose-Einstein condensate ultracold atoms, giving detailed account dynamical quantum Cherenkov transition discussed by K. Seetharam et al. [Phys. Rev. Lett. 127, 185302 (2021)]. Using time-dependent variational approach, we identify far-from-equilibrium dynamics system after attractive short-range impurity-boson interaction is quenched on. The occurs as impurity's velocity crosses an...

Prior work developed an efficient technique, called reduced precision checking, for detecting errors in floating point addition. In this work, we extend checking (RPC) to multiplication. Our results show that RPC can successfully detect multiplication at relatively low cost.

The U.S. government’s financial commitment to scientific research has significantly declined in the past few decades. Recent also revealed a lack of public awareness importance federal and development (R&D) funding; only one four Americans believe that role science is indispensable. In this paper, we argue funding provides bedrock for U.S.’s innovation infrastructure while guiding national agenda benefit society. We first examine which projects government chooses fund, concluding...

We investigate the behavior of a finite-momentum impurity immersed in weakly interacting three-dimensional Bose-Einstein condensate (BEC) ultra-cold atoms, giving detailed account dynamical quantum Cherenkov transition discussed Ref. [arXiv:2101.00030]. Using time-dependent variational approach, we identify far-from-equilibrium dynamics system after attractive short-range impurity-boson interaction is quenched on. The occurs as impurity's velocity crosses an interaction-dependent critical...

Simulations of nuclear magnetic resonance (NMR) experiments can be an important tool for extracting information about molecular structure and optimizing experimental protocols but are often intractable on classical computers large molecules such as proteins zero-field NMR. We demonstrate the first quantum simulation NMR spectrum, computing spectrum methyl group acetonitrile using four qubits a trapped-ion computer. reduce sampling cost by order magnitude compressed sensing techniques. show...

The utility of near-term quantum computers and simulators is likely to rely upon software-hardware codesign, with error-aware algorithms protocols optimized for the platforms they are run on. Here, we show how knowledge noise in a system can be exploited improve design gate-based simulation algorithms. We demonstrate this codesign context trapped ion dynamics Heisenberg spin model. Specifically, derive theoretical model describing unitary gate errors due heating ions' collective motion,...

The utility of near-term quantum computers and simulators is likely to rely upon software-hardware co-design, with error-aware algorithms protocols optimized for the platforms they are run on. Here, we show how knowledge noise in a system can be exploited improve design gate-based simulation algorithms. We concretely demonstrate this co-design context trapped ion dynamics Heisenberg spin model. Specifically, derive theoretical model describing unitary gate errors due heating ions' collective...

Interacting mixtures of bosons and fermions are ubiquitous in nature. They form the backbone standard model physics, provide a framework for understanding quantum materials such as unconventional superconductors two-dimensional electronic systems, technological importance $^3$He/$^4$He dilution refrigerators. Bose-Fermi predicted to exhibit an intricate phase diagram featuring coexisting liquids, supersolids, composite fermions, coupled superfluids, transitions between. However, their...

The Boltzmann equation is a powerful theoretical tool for modeling the collective dynamics of quantum many-body systems subject to external perturbations. Analysis gives access linear response properties including modes and transport coefficients, but often proves intractable due computational costs associated with multidimensional integrals describing collision processes. Here, we present method resolve this bottleneck, enabling study broad class that appear in fundamental science contexts...

Exploring operational regimes of many-body cavity QED with multi-level atoms remains an exciting research frontier for their enhanced storage capabilities intra-level quantum correlations. In this work, we propose extension a prototypical experiment from two to four-level description by optically addressing combination momentum and spin states the ultracold in cavity. The resulting model comprises pair Dicke Hamiltonians constructed pseudo-spin operators, effectively capturing intertwined...