A5050932483- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Quantum many-body systems
- Quantum Mechanics and Applications
- Neural Networks and Reservoir Computing
- Advanced Optical Imaging Technologies
- Digital Holography and Microscopy
- Orbital Angular Momentum in Optics
- Quantum and electron transport phenomena
- Stochastic processes and financial applications
- Quantum, superfluid, helium dynamics
- Photonic and Optical Devices
- Model Reduction and Neural Networks
- Electronic and Structural Properties of Oxides
- Quantum optics and atomic interactions
- Topological Materials and Phenomena
- Personal Information Management and User Behavior
- Photorefractive and Nonlinear Optics
- Advanced Condensed Matter Physics
- Machine Learning in Materials Science
QuEra Computing (United States)
2021-2025
Harvard University
2016-2022
University of Colorado System
2020
The realization of large-scale fully controllable quantum systems is an exciting frontier in modern physical science. We use atom-by-atom assembly to implement a platform for the deterministic preparation regular one-dimensional arrays individually controlled cold atoms. In our approach, measurement and feedback procedure eliminates entropy associated with probabilistic trap occupation results defect-free more than 50 atoms less 400 milliseconds. technique based on fast, real-time control...
Synthesizing topological order Topologically ordered matter exhibits long-range quantum entanglement. However, measuring this entanglement in real materials is extremely tricky. Now, two groups take a different approach and turn to synthetic systems engineer the of so-called toric code type (see Perspective by Bartlett). Satzinger et al . used processor study ground state excitations code. Semeghini detected signatures code–type spin liquid two-dimensional array Rydberg atoms held optical...
Quantum entanglement involving coherent superpositions of macroscopically distinct states is among the most striking features quantum theory, but its realization challenging, since such are extremely fragile. Using a programmable simulator based on neutral atom arrays with interactions mediated by Rydberg states, we demonstrate deterministic generation 'Schr\"odinger cat' Greenberger-Horne-Zeilinger (GHZ) type up to 20 qubits. Our approach engineering energy spectrum and using optimal...
The ability to engineer parallel, programmable operations between desired qubits within a quantum processor is central for building scalable information systems. In most state-of-the-art approaches, interact locally, constrained by the connectivity associated with their fixed spatial layout. Here, we demonstrate dynamic, nonlocal connectivity, in which entangled are coherently transported highly parallel manner across two dimensions, layers of single- and two-qubit operations. Our approach...
We report the implementation of universal two- and three-qubit entangling gates on neutral-atom qubits encoded in long-lived hyperfine ground states. The are mediated by excitation to strongly interacting Rydberg states implemented parallel several clusters atoms a one-dimensional array optical tweezers. Specifically, we realize controlled-phase gate, enacted novel, fast protocol involving only global coupling two benchmark this operation preparing Bell with fidelity F≥95.0(2)%, extract gate...
Individual neutral atoms excited to Rydberg states are a promising platform for quantum simulation and information processing. However, experimental progress date has been limited by short coherence times relatively low gate fidelities associated with such excitations. We report towards high-fidelity control of Rydberg-atom qubits. Enabled reduction in laser phase noise, our approach yields significant improvement properties individual further show that this extends the multi-particle case...
The control of nonequilibrium quantum dynamics in many-body systems is challenging because interactions typically lead to thermalization and a chaotic spreading throughout Hilbert space. We investigate after rapid quenches system composed 3 200 strongly interacting qubits one two spatial dimensions. Using programmable simulator based on Rydberg atom arrays, we show that coherent revivals associated with so-called scars can be stabilized by periodic driving, which generates robust subharmonic...
Neutral-atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock the large-scale application of these systems is ability to perform error-corrected operations. To entangle qubits in systems, atoms are typically excited Rydberg states, which could decay or give rise various correlated errors that cannot be addressed directly through traditional methods fault-tolerant computation. In this work, we provide first complete...
The floating phase, a critical incommensurate has been theoretically predicted as potential intermediate phase between crystalline ordered and disordered phases. In this study, we investigate the different quantum phases that arise in ladder arrays comprising up to 92 neutral-atom qubits experimentally observe emergence of phase. We analyze site-resolved Rydberg state densities distribution occurrences. measurement reveals formation domain walls within commensurate which subsequently...
We demonstrate quantum many-body state reconstruction from experimental data generated by a programmable simulator, means of neural network model incorporating known errors. Specifically, we extract restricted Boltzmann machine (RBM) wavefunctions produced Rydberg simulator with eight and nine atoms in single measurement basis, apply novel regularization technique to mitigate the effects errors training data. Reconstructions modest complexity are able capture one- two-body observables not...
The authors design and implement a laser system using novel phase modulation highly dispersive element techniques for realizing high-fidelity control over atomic hyperfine states, which are useful as qubits in quantum information processing. This approach is demonstrated neutral ${}^{87}$Rb could also be applied to trapped-ion systems.
Quantum phases with topological order, such as quantum spin liquids, have been the focus of explorations for several decades. Such feature a number remarkable properties including long-range entanglement. Moreover, they can be potentially exploited realization robust computation, exemplified by paradigmatic toric code model. While some indications that may present in frustrated condensed matter systems previously reported, so far liquids eluded direct experimental detection. In this talk, I...
The neutral-atom quantum computer "Aquila" is QuEra's latest device available through the Braket cloud service on Amazon Web Services (AWS). Aquila a "field-programmable qubit array" (FPQA) operated as an analog Hamiltonian simulator user-configurable architecture, executing programmable coherent dynamics up to 256 qubits. This whitepaper serves overview of and its capabilities: how it works under hood, key performance benchmarks, examples that demonstrate some quintessential applications....
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We report a new method to generate uniform large-scale optical focus arrays (LOFAs). By identifying and removing undesired phase rotation in the iterative Fourier-transform algorithm (IFTA), our approach rapidly produces computer-generated holograms of highly LOFAs. The also shows faster compensation system-induced LOFA intensity inhomogeneity than conventional IFTA. After just three adaptive correction steps, we demonstrate LOFAs consisting $\mathcal{O}(10^3)$ foci with $> 98\ \%$ uniformity.
Architectures for quantum computing based on neutral atoms have risen to prominence as candidates both near and long-term applications. These devices are particularly well suited solve independent set problems, the combinatorial constraints can be naturally encoded in low-energy Hilbert space due Rydberg blockade mechanism. Here, we approach this connection with a focus particular device architecture explore ubiquity utility of problems by providing examples real-world After pedagogical...
The floating phase, a critical incommensurate has been theoretically predicted as potential intermediate phase between crystalline ordered and disordered phases. In this study, we investigate the different quantum phases that arise in ladder arrays comprising up to 92 neutral-atom qubits experimentally observe emergence of phase. We analyze site-resolved Rydberg state densities distribution occurrences. measurement reveals formation domain walls within commensurate which subsequently...
The realization of large-scale fully controllable quantum systems is an exciting frontier in modern physical science. We use atom-by-atom assembly to implement a novel platform for the deterministic preparation regular arrays individually controlled cold atoms. In our approach, measurement and feedback procedure eliminates entropy associated with probabilistic trap occupation results defect-free over 50 atoms less than 400 ms. technique based on fast, real-time control 100 optical tweezers,...
Neutral atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock the large-scale application of these systems is ability to perform error-corrected operations. To entangle qubits in systems, atoms are typically excited Rydberg states, which could decay or give rise various correlated errors that cannot be addressed directly through traditional methods fault-tolerant computation. In this work, we provide first complete...