Journal ArticlePhysical Review X · February 18, 2025
Quantum thermalization occurs in a broad class of systems from elementary particles to complex materials. Out-of-equilibrium quantum systems have long been understood to either thermalize or retain memory of their initial states, but not both. Here, we ach ...
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Journal ArticleNature communications · November 2023
The Rydberg blockade is a key ingredient for entangling atoms in arrays. However, it requires atoms to be spaced well within the blockade radius, which limits the range of local quantum gates. Here we break this constraint using Floquet frequency modulatio ...
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Journal ArticlePhysical review letters · August 2023
Yang-Lee edge singularities (YLES) are the edges of the partition function zeros of an interacting spin model in the space of complex control parameters. They play an important role in understanding non-Hermitian phase transitions in many-body physics, as ...
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Journal ArticleMaterials for Quantum Technology · March 1, 2023
Quantum technologies are poised to move the foundational principles of quantum physics to the forefront of applications. This roadmap identifies some of the key challenges and provides insights on material innovations underlying a range of exciting quantum ...
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Journal ArticlePhysical Review Applied · March 1, 2023
Defect-free atom arrays are a precursor for quantum information processing and quantum simulation with neutral atoms. Yet, large-scale defect-free atom arrays can be challenging to realize, due to the losses encountered when rearranging stochastically load ...
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Journal ArticlePhysical Review Research · August 24, 2020
We demonstrate that a large class of one-dimensional quantum and classical exchange models can be described by the same type of graphs, namely, Cayley graphs of the permutation group. Their well-studied spectral properties allow us to derive crucial inform ...
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Journal ArticlePhysical review letters · August 2020
We demonstrate microwave dressing on ultracold, fermionic ^{23}Na^{40}K ground-state molecules and observe resonant dipolar collisions with cross sections exceeding 3 times the s-wave unitarity limit. The origin of these interactions is the resonant alignm ...
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Journal ArticlePhysical Review Research · April 20, 2020
One-dimensional atomic mixtures of fermions can effectively realize spin chains and thus constitute a clean and controllable platform to study quantum magnetism. Such strongly correlated quantum systems are also of sustained interest to quantum simulation ...
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Journal ArticlePhysical review letters · October 2017
A strong nonlinear coupling between harmonic oscillators is highly desirable for quantum information processing and quantum simulation, but is difficult to achieve in many physical systems. Here, we exploit the Coulomb interaction between two trapped ions ...
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Journal ArticleScience (New York, N.Y.) · July 2017
Coherence, the stability of the relative phase between quantum states, is central to quantum mechanics and its applications. For ultracold dipolar molecules at sub-microkelvin temperatures, internal states with robust coherence are predicted to offer rich ...
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Journal ArticlePhysical review letters · June 2016
We demonstrate coherent microwave control of rotational and hyperfine states of trapped, ultracold, and chemically stable ^{23}Na^{40}K molecules. Starting with all molecules in the absolute rovibrational and hyperfine ground state, we study rotational tra ...
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Conference2015 11th Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2015 · January 7, 2016
We observe nonlinear coupling of phonons between radial and axial directions in a system of two ions in a linear Paul trap. Anticrossing of phonon modes and adiabatic energy transfer are demonstrated. ...
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Journal ArticlePhysical Review A - Atomic, Molecular, and Optical Physics · December 29, 2014
We present a quantum logic scheme to detect atomic and molecular ions in different states of angular momentum based on their magnetic g factors. The state-dependent magnetic g factors mean that electronic, rotational, or hyperfine states may be distinguish ...
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Journal ArticlePhysical review letters · August 2014
We experimentally demonstrate microwave control of the motional state of a trapped ion placed in a state-dependent potential generated by a running optical lattice. Both the optical lattice depth and the running lattice frequency provide tunability of the ...
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Journal ArticleJournal of Molecular Spectroscopy · January 1, 2014
We use (1 + 1′) resonance-enhanced multiphoton photodissociation (REMPD) to detect the population in individual rovibronic states of trapped HfF+ with a single-shot absolute efficiency of 18%, which is over 200 times better than that obtained with fluoresc ...
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Journal ArticleScience (New York, N.Y.) · December 2013
Polar molecules are desirable systems for quantum simulations and cold chemistry. Molecular ions are easily trapped, but a bias electric field applied to polarize them tends to accelerate them out of the trap. We present a general solution to this issue by ...
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Journal ArticleJournal of Molecular Spectroscopy · June 1, 2012
The spectrum of electronic states at 30 000-33 000 cm -1 in hafnium fluoride has been studied using (1 + 1) resonance-enhanced multi-photon ionization (REMPI) and (1+1 ′) REMPI. Six Ω′=3/2 and ten Π1 /2 vibronic bands have been characterized. We report the ...
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Journal ArticleJournal of Molecular Spectroscopy · February 1, 2012
The molecular ion HfF + is the chosen species for a JILA experiment to measure the electron electric dipole moment (eEDM). Detailed knowledge of the spectrum of HfF is crucial to prepare HfF + in a state suitable for performing an eEDM measurement [1]. We ...
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Journal ArticleJournal of Molecular Spectroscopy · November 1, 2011
High-resolution molecular spectroscopy is a sensitive probe for violations of fundamental symmetries. Symmetry violation searches often require, or are enhanced by, the application of an electric field to the system under investigation. This typically prec ...
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Journal ArticleThe Journal of chemical physics · October 2011
Autoionization of Rydberg states of HfF, prepared using the optical-optical double resonance technique, holds promise to create HfF(+) in a particular Zeeman level of a rovibronic state for an electron electric dipole moment search. We characterize a vibro ...
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Journal ArticleApplied optics · December 2006
We investigate experimentally the influence of the grating reflectivity, grating resolution, and diode facet antireflection (AR) coating on the intrinsic linewidth of an external-cavity diode laser built with a diffraction grating in a Littrow configuratio ...
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Journal ArticleScience (New York, N.Y.) · July 2006
We generated narrowband pairs of nearly identical photons at a rate of 5 x 10(4) pairs per second from a laser-cooled atomic ensemble inside an optical cavity. A two-photon interference experiment demonstrated that the photons could be made 90% indistingui ...
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