A5022737214- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Computing Algorithms and Architecture
- Quantum Information and Cryptography
- Quantum many-body systems
- Atomic and Subatomic Physics Research
- Molecular Junctions and Nanostructures
- Quantum, superfluid, helium dynamics
- Quantum optics and atomic interactions
- Neural Networks and Reservoir Computing
- Inorganic Chemistry and Materials
- Quantum-Dot Cellular Automata
- Advanced Chemical Physics Studies
- Topological Materials and Phenomena
- Machine Learning in Materials Science
- Personal Information Management and User Behavior
- Energy Harvesting in Wireless Networks
- Topic Modeling
- Atomic and Molecular Physics
- Advanced Thermodynamics and Statistical Mechanics
- IoT-based Smart Home Systems
- Advancements in Transdermal Drug Delivery
- Computational Physics and Python Applications
- Synthesis and characterization of novel inorganic/organometallic compounds
- Botulinum Toxin and Related Neurological Disorders
- Catalysis and Oxidation Reactions
Harvard University
2018-2025
Harvard University Press
2018-2022
University of Toronto
2015-2017
MIT-Harvard Center for Ultracold Atoms
2017
Massachusetts Institute of Technology
2017
University of California, Berkeley
2016
Islamic Azad University of Tabriz
2010
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...
Suppressing errors is the central challenge for useful quantum computing
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...
Realizing quantum speedup for practically relevant, computationally hard problems is a central challenge in information science. Using Rydberg atom arrays with up to 289 qubits two spatial dimensions, we experimentally investigate algorithms solving the Maximum Independent Set problem. We use hardware-efficient encoding associated blockade, realize closed-loop optimization test several variational algorithms, and subsequently apply them systematically explore class of graphs programmable...
The ability to perform entangling quantum operations with low error rates in a scalable fashion is central element of useful information processing1. Neutral-atom arrays have recently emerged as promising computing platform, featuring coherent control over hundreds qubits2,3 and any-to-any gate connectivity flexible, dynamically reconfigurable architecture4. main outstanding challenge has been reduce errors mediated through Rydberg interactions5. Here we report the realization two-qubit...
We create fermionic dipolar ^{23}Na^{6}Li molecules in their triplet ground state from an ultracold mixture of ^{23}Na and ^{6}Li. Using magnetoassociation across a narrow Feshbach resonance followed by two-photon stimulated Raman adiabatic passage to the state, we produce 3×10^{4} spin-polarized state. observe lifetime 4.6 s isolated molecular sample, approaching p-wave universal rate limit. Electron spin spectroscopy was used determine hyperfine structure this previously unobserved
Understanding the collective quantum dynamics of non-equilibrium many-body systems is an outstanding challenge in science. In particular, driven by fluctuations are important for formation exotic phases matter1, fundamental high-energy processes2, metrology3,4 and algorithms5. Here we use a programmable simulator based on Rydberg atom arrays to experimentally study across (2+1)-dimensional Ising phase transition. After crossing critical point, observe gradual growth correlations through...
Machine learning has recently emerged as a promising approach for studying complex phenomena characterized by rich datasets. In particular, data-centric approaches lead to the possibility of automatically discovering structures in experimental datasets that manual inspection may miss. Here, we introduce an interpretable unsupervised-supervised hybrid machine approach, hybrid-correlation convolutional neural network (hybrid-CCNN), and apply it data generated using programmable quantum...
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...
Programmable quantum simulators based on Rydberg atom arrays are a fast-emerging platform, bringing together long coherence times, high-fidelity operations, and large numbers of interacting qubits deterministically arranged in flexible geometries. Today's array devices demonstrating their utility as for studying phases phase transitions matter. In this paper, we show that unprocessed imperfect experimental projective measurement data can be used to enhance silico simulations matter, by...
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Quantum simulations of many-body systems are among the most promising applications quantum computers. In particular, models based on strongly-correlated fermions central to our understanding chemistry and materials problems, can lead exotic, topological phases matter. However, due non-local nature fermions, such challenging simulate with qubit devices. Here we realize a digital simulation architecture for two-dimensional fermionic reconfigurable atom arrays. We utilize fermion-to-qubit...
Electric noise from metallic surfaces is a major obstacle towards quantum applications with trapped ions due to motional heating of the ions. Here, we discuss how same source can also lead pure dephasing states. The mechanism particularly relevant at small ion-surface distances, thus imposing new constraint on trap miniaturization. By means free induction decay experiment, measure time motion single ion 50~$\mu$m above Cu-Al surface. From times extract integrated below secular frequency ion....
Suppressing errors is the central challenge for useful quantum computing, requiring error correction large-scale processing. However, overhead in realization of error-corrected ``logical'' qubits, where information encoded across many physical qubits redundancy, poses significant challenges to logical computing. Here we report a programmable processor based on operating with up 280 qubits. Utilizing logical-level control and zoned architecture reconfigurable neutral atom arrays, our system...
The triplet ground states of NaLi are explored using two-photon spectroscopy an ultracold atomic mixture.
Realizing faster experimental cycle times is important for the future of quantum simulation. The time determines how often many-body wave-function can be sampled, defining rate at which information extracted from We demonstrate a system produce Bose-Einstein condensate $8 \times 10^4$ $^{168}\text{Er}$ atoms with approximately 85% fraction in 800 ms and degenerate Fermi gas $^{167}\text{Er}$ 4 seconds, are unprecedented compared to many existing experiments. This accomplished by several...
The ability to perform entangling quantum operations with low error rates in a scalable fashion is central element of useful information processing. Neutral atom arrays have recently emerged as promising computing platform, featuring coherent control over hundreds qubits and any-to-any gate connectivity flexible, dynamically reconfigurable architecture. major outstanding challenge has been reduce errors mediated through Rydberg interactions. Here we report the realization two-qubit gates...
In quantum mechanical many-body systems, long-range and anisotropic interactions promote rich spatial structure can lead to frustration, giving rise a wealth of complex, strongly correlated phases. Long-range play an important role in nature; however, simulations lattice systems have largely not been able realize such interactions. A wide range efforts are underway explore interacting using polar molecules, Rydberg atoms, optical cavities, magnetic atoms. Here, we novel phases system with...