Article
Physics, Multidisciplinary
Javier del Pino, Oded Zilberberg
Summary: The quantum simulation of dynamical gauge field theories allows for studying complex high-energy physics using controllable low-energy devices. In this study, we demonstrate the use of bosonic codes to simulate dynamical gauge fields by encoding matter and gauge fields in a network of resonators coupled via three-wave mixing. Our findings provide insights into preserving necessary gauge symmetries and promote the realization of high-energy models using bosonic codes.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
J. Knoerzer, T. Shi, E. Demler, J. Cirac
Summary: By studying trapped-ion quantum systems, we can gain insights into generalized Holstein models and benchmark expensive numerical calculations. Our focus is on simulating many-electron systems and examining the competition between charge-density wave order, fermion pairing, and phase separation.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Zhiqian Gui, Zhenming Zhang, Jin Su, Hao Lyu, Yongping Zhang
Summary: This study reveals the mechanism of phase separation in a trapped spin-1/2 Bose-Einstein condensate with spin-orbit coupling and analyzes the differences between phase separations in different conditions. It proposes an application of adiabatic splitting dynamics.
Article
Optics
Chung-Hsien Wang, Yi-Cheng Wang, Chi-Chih Chen, Chun-Che Wang, H. H. Jen
Summary: We demonstrate an enhanced dark-state sideband cooling in trapped atoms utilizing photon-mediated dipole-dipole interactions among them. By placing the atoms at the magic interparticle distances, we achieve an outperformed cooling behavior in the target atom that surpasses the limit of a single atom. Our results provide insights into subrecoil cooling of atoms with collective and light-induced long-range dipole-dipole interactions and pave the way for implementing genuine quantum operations in multiple quantum registers.
Article
Materials Science, Multidisciplinary
Takuhiro Ogino, Ryui Kaneko, Satoshi Morita, Shunsuke Furukawa
Summary: We study the ground-state phase diagram of a spin-21 frustrated XXZ ladder and find four featureless phases with distinct properties. The Haldane-CD transition point in the isotropic model behaves differently in the XXZ model, with additional phases appearing between the transition lines.
Article
Physics, Multidisciplinary
Thomas Bilitewski, Ana Maria Rey
Summary: This article studies the nonequilibrium dynamics of dipoles confined in multiple stacked two-dimensional layers, implementing long-range interacting quantum spin 1/2 XXX model. It is demonstrated that strong in-plane interactions can protect a manifold of collective layer dynamics, enabling the mapping of many-body spin dynamics to bosonic models. The control over interactions, lattice geometry, and state preparation in interacting dipolar systems uniquely afforded by various atomic, molecular, and optical platforms allows for the control of temporal and spatial propagation of correlations.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Fluids & Plasmas
G. I. Japaridze, Hadi Cheraghi, Saeed Mahdavifar
Summary: In this study, the ground-state phase diagram of a one-dimensional spin-1/2 XXZ chain with a spatially modulated Dzyaloshinskii-Moriya interaction in the presence of an alternating magnetic field was investigated. Quantum phase transitions from gapped phases to gapless phases were identified and described using bosonization treatment and finite chain exact diagonalization studies. The critical magnetic field for transition into a fully polarized state was also determined.
Article
Materials Science, Multidisciplinary
Takuhiro Ogino, Shunsuke Furukawa, Ryui Kaneko, Satoshi Morita, Naoki Kawashima
Summary: In this study, a spin-1/2 XXZ model on a two-leg ladder with a four-spin interaction is investigated, revealing eight distinct gapped phases consisting of symmetry-breaking and featureless phases. The presence of Gaussian and Ising transitions between the different phases, as well as the identification of topological phase transitions, highlights the complexity of the system's behavior under certain symmetries.
Article
Materials Science, Multidisciplinary
T. Macri, L. Lepori, G. Pagano, M. Lewenstein, L. Barbiero
Summary: The study investigates the effects of nonlocal couplings in the long-range spin-1/2 XXZ Heisenberg Hamiltonian, particularly focusing on the calculation of the two-spin energy spectrum. The presence of bound states for two spins is crucial for determining both two- and many-spin dynamics, with implications on spin spreading and dynamical stabilization of effective antiferromagnetic states. The research also proposes a novel scheme using a trapped-ion quantum simulator to experimentally realize the long-range XXZ model and study its out-of-equilibrium properties.
Article
Quantum Science & Technology
Ivana Dimitrova, Stuart Flannigan, Yoo Kyung Lee, Hanzhen Lin, Jesse Amato-Grill, Niklas Jepsen, Ieva Cepaite, Andrew J. Daley, Wolfgang Ketterle
Summary: By manipulating the spin states of ultracold atoms in an optical lattice system, a transition from a fully magnetized state to a correlated zero-magnetization state has been achieved, and the formation of correlations has been demonstrated. These findings highlight the potential and challenges for preparing many-body eigenstates of spin Hamiltonians through adiabatic preparation protocols.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
John Schliemann, Joao Vitor Costa, Paul Wenk, J. Carlos Egues
Summary: The study investigates transitions between ergodic and many-body localized phases in spin systems subjected to quenched disorder, finding key features of the transitions through exact numerical diagonalization and random matrix techniques.
Article
Chemistry, Multidisciplinary
Jacob Whitlow, Zhubing Jia, Ye Wang, Chao Fang, Jungsang Kim, Kenneth R. Brown
Summary: This article presents a quantum simulation of conical intersections using a trapped atomic ion system, and experimentally observes the manifestation of geometric phase, demonstrating the advantage of combining spin and motion for quantum simulation of chemical reactions.
Article
Physics, Applied
J. S. Harms, H. Y. Yuan, Rembert A. Duine
Summary: Efficient manipulation of magnons for information processing is crucial in spintronics and magnonics. This study proposes to amplify magnon currents by realizing the bosonic Klein paradox in magnetic nanostructures. The researchers successfully stabilize both magnons and antimagnons by tuning the effective dissipation using spin-orbit torques. This finding has potential applications in magnon amplifier devices for spintronic applications and provides a solid-state platform for studying the relativistic behavior of bosonic particles.
PHYSICAL REVIEW APPLIED
(2022)
Article
Physics, Multidisciplinary
Yotam Shapira, Sapir Cohen, Nitzan Akerman, Ady Stern, Roee Ozeri
Summary: In this study, we enhance the fidelity and robustness of entangling gates in quantum computers by introducing spin-dependent squeezing.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
V Ranjan, Y. Wen, A. K. Keyser, S. E. Kubatkin, A. Danilov, T. Lindstrom, P. Bertet, S. E. de Graaf
Summary: In this study, the researchers demonstrate the ability to control microwave emission from a spin ensemble using a tunable resonator. They suppress echo emission on demand by detuning the resonator during spin rephasing and subjecting spins to magnetic field gradients generated by a bias current. The authors also show that spin coherence is preserved during the silencing process.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Vijin Venu, Peihang Xu, Mikhail Mamaev, Frank Corapi, Thomas Bilitewski, Jose P. D'Incao, Cora J. Fujiwara, Ana Maria Rey, Joseph H. Thywissen
Summary: Exchange-antisymmetric pair wavefunctions in fermionic systems can lead to unconventional superconductors and superfluids. Creating and controlling these states in quantum systems, such as ultracold gases, can enable new types of quantum simulations, topological quantum gates, and exotic few-body states. This study demonstrates the creation of isolated pairs of strongly interacting fermionic atoms in a multiorbital three-dimensional optical lattice, where the p-wave interaction energies can be accurately measured and tuned. The absence of three-body processes allows the observation of elastic unitary p-wave interactions and coherent oscillations between free-atom and interacting-pair states.
Article
Physics, Multidisciplinary
M. O. Brown, S. R. Muleady, W. J. Dworschack, R. J. Lewis-Swan, A. M. Rey, O. Romero-Isart, C. A. Regal
Summary: This study demonstrates the measurement and reconstruction of quantum mechanical states through the direct measurement of position and momentum. By using optical tweezers to measure the momentum and trap harmonic evolution, we have successfully observed non-classical motional states and demonstrated some of their quantum properties. This research is important for quantum information, metrology, and the study of quantum behavior in massive levitated particles.
Article
Physics, Multidisciplinary
Timur V. Tscherbul, Jun Ye, Ana Maria Rey
Summary: We propose a general protocol for generating robust entangled states of nuclear and/or electron spins of ultracold polar molecules using electric dipolar interactions. By encoding a spin-1/2 degree of freedom in a combined set of spin and rotational molecular levels, we theoretically demonstrate effective spin-spin interactions enabled by efficient magnetic control over electric dipolar interactions. These interactions can be used to create long-lived cluster and squeezed spin states.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Multidisciplinary
Bhuvanesh Sundar, Diego Barberena, Asier Pineiro Orioli, Anjun Chu, James K. Thompson, Ana Maria Rey, Robert J. Lewis-Swan
Summary: We propose a method to simulate the creation of bosonic pairs using long-lived dipoles with multilevel structures coupled to an optical cavity. Entanglement between the atoms is achieved through the exchange of virtual photons, leading to exponential growth and described by two-mode squeezing. By mapping the effective bosonic model to the natural spin description, we can realize optical homodyne measurements and utilize this for quantum-enhanced sensing of an optical phase.
PHYSICAL REVIEW LETTERS
(2023)
Article
Quantum Science & Technology
Giuseppe Vitagliano, Matteo Fadel, Iagoba Apellaniz, Matthias Kleinmann, Bernd Lucke, Carsten Klempt, Geza Toth
Summary: This article presents a method to detect bipartite entanglement using number-phase-like uncertainty relations in split spin ensembles. An uncertainty relation is derived for spin systems, which allows for the detection of bipartite entanglement in an unpolarized Dicke state of many spin1/2 particles. The method involves splitting the particles into two subensembles and conducting collective angular momentum measurements locally on each part.
Article
Optics
Thomas Bilitewski, G. A. Dominguez-Castro, David Wellnitz, Ana Maria Rey, Luis Santos
Summary: We investigate the growth and propagation of quantum correlations in a two-dimensional bilayer system, where spins interact through long-range and anisotropic dipolar interactions. The study predicts the creation of correlated excitations at specific momenta and entanglement between spatially separated modes. The behavior can be controlled by changing the dipolar orientation, the layer separation, or the dipolar couplings, and can be observed in experiments with Rydberg atoms, magnetic atoms, and polar molecule arrays.
Article
Physics, Multidisciplinary
Jeremy T. Young, Sean R. Muleady, Michael A. Perlin, Adam M. Kaufman, Ana Maria Rey
Summary: We propose a protocol for generating spin squeezed states in controllable atomic, molecular, and optical systems, particularly in optical clock platforms compatible with Rydberg interactions. By combining short-range, soft-core potential with an external drive, we can convert naturally occurring Ising interactions into an XX spin model and create a many-body gap. This gap helps to maintain the system within a collective manifold of states where useful spin squeezing can be generated. The protocol demonstrates robustness against experimentally relevant decoherence and outperforms typical protocols without gap protection, achieving significant levels of spin squeezing.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Physics, Multidisciplinary
Anjun Chu, Asier Pineiro Orioli, Diego Barberena, James K. Thompson, Ana Maria Rey
Summary: We propose the use of multilevel atoms in an optical cavity to engineer different types of bosonic models with correlated hopping processes. The correlated hopping is achieved through collective cavity-mediated interactions in the far-detuned limit. By weakly coupling ground-state levels to these dressed states, one can suppress undesired shifts and realize correlated hopping processes. The synthetic ladder system can exhibit rich many-body dynamics including pair production, chiral transport, and light-cone correlation spreading, demonstrating the engineered notion of locality.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Optics
Allison L. Carter, Sean R. Muleady, Athreya Shankar, Jennifer F. Lilieholm, Bryce B. Bullock, Matthew Affolter, Ana Maria Rey, John J. Bollinger
Summary: In this study, we theoretically investigate the impact of spontaneous emission on quantum gate operations with trapped-ion ground-state Zeeman qubits in a high magnetic field. We compare the performance of two types of gates and explore different operating points. Our results show that both gate types can achieve similar performance at high magnetic fields.
Article
Optics
Cebrail Puer, Mareike Hetzel, Martin Quensen, Andreas Hueper, Jiao Geng, Jens Kruse, Wolfgang Ertmer, Carsten Klempt
Summary: In this paper, a high-flux source of 87Rb Bose-Einstein condensates combined with a number-resolving detection is presented for state tomography and interferometric application of entangled quantum states. A hybrid evaporation approach in a magnetic and optical trap is used to create Bose-Einstein condensates of 2 x 105 atoms with minimal thermal fraction within 3.3 s. The low-noise selection and subsequent detection of subsamples of up to 16 atoms are demonstrated, with counting noise below 0.2 atoms. These techniques offer an exciting path towards creating and analyzing mesoscopic quantum states with improved fidelities and their applications in fundamental and metrological fields.
Article
Quantum Science & Technology
Mikhail Mamaev, Thomas Bilitewski, Bhuvanesh Sundar, Ana Maria Rey
Summary: We theoretically study the dynamics of n-level spin-orbit coupled alkaline-earth fermionic atoms with SU(n) symmetric interactions. Laser driving and the use of a synthetic dimension allow us to observe the development of complex chiral current patterns and a series of nontrivial prethermal plateaus caused by resonant processes. These findings provide insights into the behavior of strongly interacting systems.
Article
Physics, Multidisciplinary
Anthony M. Polloreno, Ana Maria Rey, John J. Bollinger
Summary: Trapped ions offer a useful platform for quantum information processing due to their long coherence times and high gate fidelities. However, the rotation of ion crystals poses a challenge for single ion addressability. In this study, we propose a protocol that utilizes a deformable mirror to introduce AC Stark shift patterns, enabling high-fidelity single-ion gates in rotating ion crystals.
PHYSICAL REVIEW RESEARCH
(2022)
Article
Optics
Michael A. Perlin, Diego Barberena, Mikhail Mamaev, Bhuvanesh Sundar, Robert J. Lewis-Swan, Ana Maria Rey
Summary: We study multilevel fermions in an optical lattice described by the Hubbard model with on-site SU(n)-symmetric interactions. We find that this system can be mapped onto a spin model with all-to-all SU(n )-symmetric couplings when the parameters are appropriate. Raman pulses that address internal spin states modify the atomic dispersion relation and induce spin-orbit coupling, which competes with the SU(n) exchange interactions. We investigate the mean-field dynamical phase diagram of the resulting model as a function of n and different initial configurations that are accessible with Raman pulses. Consistent with previous studies for n = 2, we find that for some initial states the spin model exhibits two distinct dynamical phases that obey simple scaling relations with n. Moreover, for n > 2 we find that dynamical behavior can be highly sensitive to initial intraspin coherences. Our predictions are readily testable in current experiments with ultracold alkaline-earth-metal(-like) atoms.
