A5049639010- Cold Atom Physics and Bose-Einstein Condensates
- Atomic and Subatomic Physics Research
- Advanced Frequency and Time Standards
- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Quantum optics and atomic interactions
- Quantum and electron transport phenomena
- Quantum, superfluid, helium dynamics
- Hemodynamic Monitoring and Therapy
- Optical Coherence Tomography Applications
- Quantum Mechanics and Applications
- Neural Networks and Reservoir Computing
- Electronic and Structural Properties of Oxides
- Spectroscopy and Laser Applications
- Advanced Fiber Laser Technologies
- Cardiovascular Syncope and Autonomic Disorders
- Retinal Diseases and Treatments
- Advanced Chemical Physics Studies
- Ophthalmology and Visual Impairment Studies
- Physics of Superconductivity and Magnetism
- Chaos-based Image/Signal Encryption
- Physical Unclonable Functions (PUFs) and Hardware Security
- Glaucoma and retinal disorders
- Scientific Measurement and Uncertainty Evaluation
- Cryptographic Implementations and Security
Atom Computing (United States)
2020-2024
Parker Hannifin (United States)
2024
University of Colorado Boulder
2011-2018
Rigetti Computing (United States)
2018
Joint Institute for Laboratory Astrophysics
2011-2018
National Institute of Standards and Technology
2012-2017
Intel (United States)
2015
Massachusetts Institute of Technology
2008-2009
MIT-Harvard Center for Ultracold Atoms
2008-2009
Rochester Institute of Technology
2009
The pursuit of better atomic clocks has advanced many research areas, providing quantum state control, new insights in science, tighter limits on fundamental constant variation, and improved tests relativity. record for the best stability accuracy is currently held by optical lattice clocks. This work takes an important step towards realizing full potential a many-particle clock with state-of-the-art stable laser. Our 87Sr now achieves fractional 2.2e-16 at 1 s. With this stability, we...
Strontium optical lattice clocks have the potential to simultaneously interrogate millions of atoms with a high spectroscopic quality factor $4 \times 10^{-17}$. Previously, atomic interactions forced compromise between clock stability, which benefits from large atom number, and accuracy, suffers density-dependent frequency shifts. Here, we demonstrate scalable solution takes advantage high, correlated density degenerate Fermi gas in three-dimensional guard against on-site interaction We...
Harnessing techniques from analog signal processing, we establish a new path for large-scale quantum computation.
Machine learning techniques have led to broad adoption of a statistical model computing. The distributions natively available on quantum processors are superset those classically. Harnessing this attribute has the potential accelerate or otherwise improve machine relative purely classical performance. A key challenge toward that goal is hybridize computing resources and traditional with emerging capabilities general purpose processors. Here, we demonstrate such hybridization by training...
We introduce an optical tweezer platform for assembling and individually manipulating a two-dimensional register of nuclear spin qubits. Each qubit is encoded in the ground $^{1}S_{0}$ manifold $^{87}$Sr manipulated by site-selective addressing beams. observe that relaxation negligible after 5 seconds, indicating $T_1\gg5$ s. Furthermore, utilizing simultaneous manipulation subsets qubits, we demonstrate significant phase coherence over entire register, estimating $T_2^\star =...
Assembling and maintaining large arrays of individually addressable atoms is a key requirement for continued scaling neutral-atom-based quantum computers simulators. In this work, we demonstrate new paradigm assembly atomic arrays, based on synergistic combination optical tweezers cavity-enhanced lattices, the incremental filling target array from repetitively filled reservoir. protocol, provide microscopic rearrangement atoms, while lattices enable creation numbers traps with sufficient...
Many-particle optical lattice clocks have the potential for unprecedented measurement precision and stability due to their low quantum projection noise. However, this has so far never been realized because clock limited by frequency noise of local oscillators. By synchronously probing two $^{87}\mathrm{Sr}$ systems using a laser with thermal floor $1\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}15}$, we remove classically correlated from intercomparison, but does not demonstrate...
Using a narrow intercombination line in alkaline earth atoms to mitigate large inelastic losses, we explore the optical Feshbach resonance effect an ultracold gas of bosonic (88)Sr. A systematic measurement three resonances allows precise determinations strength and scaling law, agreement with coupled-channel theory. Resonant enhancement complex scattering length leads thermalization mediated by elastic collisions otherwise ideal gas. Optical could be used control atomic interactions high...
A central challenge in building a scalable quantum computer with superconducting qubits is the execution of high-fidelity two-qubit gates presence many resonant elements. As more elements are added to architecture, and as multiplicity their couplings grows, design's frequency space becomes crowded, performance suffers. The authors present way address this difficulty: selective activation interactions between transmon fixed those tunable frequency. This depends on both amplitude modulation,...
Measurement-based quantum error correction relies on the ability to determine state of a subset qubits (ancillas) within processor without revealing or disturbing remaining qubits. Among neutral-atom-based platforms, scalable, high-fidelity approach midcircuit measurement that retains ancilla in suitable for future operations has not yet been demonstrated. In this work, we perform maging using narrow-linewidth transition an array tweezer-confined Yb171 atoms demonstrate nondestructive...
We demonstrate a heralded quantum memory where photon announces the mapping of light polarization state onto single collective-spin excitation (magnon) shared between two atomic ensembles. The magnon can be converted at later time into polarized with fidelity over 90(2)% for all fiducial input states, well above classical limit 2/3. process viewed as nondestructive probe is detected, stored, and regenerated without touching its-potentially undetermined-polarization.
Optical Feshbach resonances (OFRs) have generated significant experimental interest in recent years. These are promising for many-body physics experiments, yet the practical application of OFRs has been limited. The theory based on an approximate model that fails important detuning regimes, and incomplete theoretical understanding this effect hindered OFR experiments. We present most complete treatment to date, demonstrating characteristics must be considered experiments comparing...
Assembling and maintaining large arrays of individually addressable atoms is a key requirement for continued scaling neutral-atom-based quantum computers simulators. In this work, we demonstrate new paradigm assembly atomic arrays, based on synergistic combination optical tweezers cavity-enhanced lattices, the incremental filling target array from repetitively filled reservoir. protocol, provide microscopic rearrangement atoms, while lattices enable creation numbers deep potentials that...
We have developed a compact, multimodal instrument for simultaneous acquisition of en face quasi-confocal fundus images and adaptive-optics (AO) spectral-domain optical coherence tomography (SDOCT) cross-sectional images. The system including all AO SDOCT components occupies 60×60 cm breadboard that can be readily transported clinical applications. component combines Hartmann-Shack wavefront sensor microelectromechanical systems-based deformable mirror to sense correct ocular aberrations at...
Measurement-based quantum error correction relies on the ability to determine state of a subset qubits (ancillae) within processor without revealing or disturbing remaining qubits. Among neutral-atom based platforms, scalable, high-fidelity approach mid-circuit measurement that retains ancilla in suitable for future operations has not yet been demonstrated. In this work, we perform imaging using narrow-linewidth transition an array tweezer-confined $^{171}$Yb atoms demonstrate nondestructive...
The semiclassical theory developed by Maslov and Fedoriuk is used to calculate the wave function for two-dimensional scattering from a Morse potential. characteristic S density Jacobian J are computed in order obtain primitive function. incident part shows distorted plane-wave behavior scattered radially outgoing behavior. A uniform approximation gives that well-behaved near caustic.
Quantum information processing with neutral atoms relies on Rydberg excitation for entanglement generation. While the use of heavy divalent or open-shell elements, such as strontium ytterbium, has benefits due to their optically active core and a variety possible qubit encodings, structure is generally complex. For some isotopes in particular, hyperfine interactions are relevant even highly excited electronic states. We employ multichannel quantum defect theory infer nonzero nuclear spin...
vi duced me to the world of AMO, most DIY discipline I have ever come across.His hilarious combination Comic Sans, Oscar Wilde quotations, and Clifford Algebras enriched everyday in lab as an undergraduate.Over last 7+ years, since stepping into Vladan's at CUA, I've depend on Jon Simon's blend camaraderie mentorship.My circuitous path JILA actually began with a year Cornell.But after having change heart went back field AMO.Throughout that though got spend summer CERN working CMS Prof. Peter...
A drastic resurgence of interest in Neutral Atom Quantum Computing has ushered a new era fascinating demonstrations key enabling technologies for Fault-Tolerant Computing. Here I will give an overview recent enabled by Computing's systems built around alkaline-earth(-like) elements including: long coherence times, high-fidelity-scalable-low-loss readout, individually driven 1Q gates, 2Q gates at high fidelity, mid-circuit measurement, and large array refilling.
Quantum information processing with neutral atoms relies on Rydberg excitation for entanglement generation. While the use of heavy divalent or open-shell elements, such as strontium ytterbium, has benefits due to their optically active core and a variety possible qubit encodings, structure is generally complex. For some isotopes in particular, hyperfine interactions are relevant even highly excited electronic states. We employ multi-channel quantum defect theory infer non-zero nuclear spin...
Arrays of optically trapped neutral atoms are a promising architecture for the realization quantum computers. In order to run increasingly complex algorithms, it is advantageous demonstrate high-fidelity and flexible gates between long-lived highly coherent qubit states. this work, we universal gate-set with individually controlled parallel application single-qubit two-qubit operating on ground-state nuclear spin in arrays tweezer-trapped $^{171}$Yb atoms. We utilize long lifetime, control,...
Transitioning from quantum computation on physical qubits to encoded, logical can improve the error rate of operations, and will be essential for realizing valuable computational advantages. Using a neutral atom processor with 256 qubits, each an individual Ytterbium atom, we demonstrate entanglement 24 using distance-two [[4,2,2]] code, simultaneously detecting errors correcting lost qubits. We also implement Bernstein-Vazirani algorithm up 28 encoded in [[4,1,2]] showing...