617 citations · 2k across the 42 of their papers we have counts for
22 papers · 1 filter
Mediating gates between polar molecules using microwave-dressed Rydberg atoms
Bas Gerritsen, Sean R. Muleady, Arghavan Safavi-Naini +2
We propose a scheme for mediating many simultaneous, fast entangling gates between pairs of polar molecules using Rydberg atoms. By using microwave drives, the dipolar interactions…
Quantum simulation of the Dicke model in a two-dimensional ion crystal
Bryce Bullock, Sean R. Muleady, Jennifer F. Lilieholm +6
Quantum many-body systems driven far from equilibrium can exhibit phase transitions, chaos and entanglement, but probing these phenomena in large, nearly closed systems remains cha…
Optimal Displacement Sensing with Spin-Dependent Squeezed States
Liam J. Bond, Christophe H. Valahu, Athreya Shankar +2
Displacement sensing is a fundamental task in metrology. However, the development of quantum-enhanced sensors that fully utilize the available degrees of freedom in many-body quant…
Vibrationally coupled Rydberg atom-ion molecules
Ilango Maran, Liam J. Bond, Jeremy T. Young +2
We study the occurrence of Rydberg atom-ion molecules (RAIMs) in a hybrid atom-ion system with an ion crystal trapped in a Paul trap coupled to Rydberg atoms on its either ends. To…
Phonon-mediated quantum gates in trapped ions coupled to an ultracold atomic gas
Lorenzo Oghittu, Arghavan Safavi-Naini, Antonio Negretti +1
We study the dynamics of phonon-mediated qubit-qubit interactions between trapped ions in the presence of an ultracold atomic gas. By deriving and solving a master equation to desc…
Open quantum dynamics with variational non-Gaussian states and the truncated Wigner approximation
Liam J. Bond, Bas Gerritsen, Jiří Minář +3
We present a framework for simulating the open dynamics of spin-boson systems by combining variational non-Gaussian states with a quantum trajectories approach. We apply this metho…
Global Variational Quantum Circuits for Arbitrary Symmetric State Preparation
Liam J. Bond, Matthew J. Davis, Jiří Minář +3
Quantum states that are symmetric under particle exchange play a crucial role in fields such as quantum metrology and quantum error correction. We use a variational circuit compose…
Engineering spin-spin interactions with optical tweezers in trapped ions
Juan Diego Arias Espinoza, Matteo Mazzanti, Katya Fouka +5
We propose a new method for generating programmable interactions in one- and two-dimensional trapped-ion quantum simulators. Here we consider the use of optical tweezers to enginee…
Saddle-point scrambling without thermalisation
R. A. Kidd, A. Safavi-Naini, J. F. Corney
Out-of-time-order correlators (OTOCs) have proven to be a useful tool for studying thermalisation in quantum systems. In particular, the exponential growth of OTOCS, or scrambling,…
Thermalisation in a Bose-Hubbard dimer with modulated tunneling
Ryan A. Kidd, Arghavan Safavi-Naini, Joel F. Corney
The periodically modulated Bose-Hubbard dimer model offers an experimentally realizable and highly tunable platform for observing the scrambling of quantum information and the appa…
Dynamics of quantum information
R. J. Lewis-Swan, A. Safavi-Naini, A. M. Kaufman +1
The ability to harness the dynamics of quantum information and entanglement is necessary for the development of quantum technologies and the study of complex quantum systems. On th…
Bang-bang shortcut to adiabaticity in the Dicke model as realized in a Penning trap experiment
J. Cohn, A. Safavi-Naini, R. J. Lewis-Swan +7
We introduce a bang-bang shortcut to adiabaticity for the Dicke model, which we implement via a 2-D array of trapped ions in a Penning trap with a spin-dependent force detuned clos…
Modeling near ground-state cooling of two-dimensional ion crystals in a Penning trap using electromagnetically induced transparency
Athreya Shankar, Elena Jordan, Kevin A. Gilmore +3
Penning traps, with their ability to control planar crystals of tens to hundreds of ions, are versatile quantum simulators. Thermal occupations of the motional drumhead modes, tran…
Multiworm algorithm quantum Monte Carlo
F. Lingua, B. Capogrosso-Sansone, A. Safavi-Naini +2
We review the path-integral quantum Monte Carlo method and discuss its implementation by multiworm algorithms. We analyze in details the features of the algorithms, and focus our a…
Unifying fast scrambling, thermalization and entanglement through the measurement of FOTOCs in the Dicke model
R. J. Lewis-Swan, A. Safavi-Naini, J. J. Bollinger +1
Scrambling of quantum information is the process by which information initially stored in the local degrees of freedom of a quantum many-body system spreads over its many-body degr…
Verification of a many-ion simulator of the Dicke model through slow quenches across a phase transition
A. Safavi-Naini, R. J. Lewis-Swan, J. G. Bohnet +7
We use a self-assembled two-dimensional Coulomb crystal of ions in the presence of an external transverse field to engineer a simulator of the Dicke Hamiltonian, an iconi…
Exploring adiabatic quantum dynamics of the Dicke model in a trapped ion quantum simulator
A. Safavi-Naini, R. J. Lewis-Swan, J. G. Bohnet +7
We use a self-assembled two-dimensional Coulomb crystal of ions in the presence of an external transverse field to engineer a quantum simulator of the Dicke Hamiltonian.…
Exploring many body localization and thermalization using semiclassical method
O. L. Acevedo, A. Safavi-Naini, J. Schachenmayer +3
The Discrete Truncated Wigner Approximation (DTWA) is a semi-classical phase space method useful for the exploration of Many-body quantum dynamics. In this work we investigate Many…
Measuring out-of-time-order correlations and multiple quantum spectra in a trapped ion quantum magnet
Martin Gärttner, Justin G. Bohnet, Arghavan Safavi-Naini +3
Controllable arrays of ions and ultra-cold atoms can simulate complex many-body phenomena and may provide insights into unsolved problems in modern science. To this end, experiment…
The Role of Interspecies Interactions in the Preparation of a Low-entropy Gas of Polar Molecules in a Lattice
A. Safavi-Naini, M. L. Wall, Ana Maria Rey
The preparation of a quantum degenerate gas of heteronuclear molecules has been an outstanding challenge. We use path integral Quantum Monte Carlo simulations to understand the rol…
Influence of monolayer contamination on electric-field-noise heating in ion traps
A. Safavi-Naini, E. Kim, P. F. Weck +2
Electric field noise is a hinderance to the assembly of large scale quantum computers based on entangled trapped ions. Apart from ubiquitous technical noise sources, experimental s…
A microscopic model of electronic field noise heating in ion traps
A. Safavi-Naini, P. Rabl, P. Weck +1
Motional heating of ions in micro-fabricated traps is a challenge hindering experimental realization of large-scale quantum processing devices. Recently a series of measurements of…