77 citations · 743 across the 35 of their papers we have counts for
35 papers
Spectrally local geometric response at the onset of many-body quantum chaos
George Mihailescu, Pablo M. Poggi
We introduce the spectral density of geometric response, a measure of eigenstate sensitivity across an energy spectrum. Applied to many-body quantum systems, it reveals an exponent…
Quantum optimal control of the Dicke manifold in dipolar Rydberg atom arrays
Ivy Pannier-Günther, Vikas Buchemmavari, Pablo M. Poggi +1
The ability to engineer and control quantum states of many-body systems is a central challenge in quantum information science. For a register of qubits, the full Hilbert space…
Long-Range Interacting Many-Body Systems in the Irrep Basis
Ivy Pannier-Günther, Andrew Kolmer Forbes, Pablo M. Poggi +1
Spin models featuring infinite-range, homogeneous all-to-all interactions can be efficiently described due to the existence of a symmetry-restricted Hilbert subspace and an underly…
Taming quantum systems: A tutorial for using shortcuts-to-adiabaticity, quantum optimal control, and reinforcement learning
Callum W. Duncan, Pablo M. Poggi, Marin Bukov +2
Precise manipulation of quantum effects at the atomic and nanoscale has become an essential task in ongoing scientific and technological endeavours. Quantum control methods are thu…
Entangled states from sparsely coupled spins for metrology with neutral atoms
Sridevi Kuriyattil, Pablo M. Poggi, Jonathan D. Pritchard +2
Quantum states featuring extensive multipartite entanglement are a resource for quantum-enhanced metrology, with sensitivity up to the Heisenberg limit. However, robust generation…
Quantum ergodicity and scrambling in quantum annealers
Manuel H. Muñoz-Arias, Pablo M. Poggi
Quantum annealers play a major role in the ongoing development of quantum information processing and in the advent of quantum technologies. Their functioning is underpinned by the…
Universally Robust Quantum Control
Pablo M. Poggi, Gabriele De Chiara, Steve Campbell +1
We study the robustness of the evolution of a quantum system against small uncontrolled variations in parameters in the Hamiltonian. We show that the fidelity susceptibility, which…
Probing scrambling and operator size distributions using random mixed states and local measurements
Philip Daniel Blocher, Karthik Chinni, Sivaprasad Omanakuttan +1
The dynamical spreading of quantum information through a many-body system, typically called scrambling, is a complex process that has proven to be essential to describe many proper…
Measurement-induced multipartite-entanglement regimes in collective spin systems
Pablo M. Poggi, Manuel H. Muñoz-Arias
We study the competing effects of collective generalized measurements and interaction-induced scrambling in the dynamics of an ensemble of spin-1/2 particles at the level of quantu…
Trotter Errors and the Emergence of Chaos in Quantum Simulation
Kevin W. Kuper, Jon P. Pajaud, Karthik Chinni +2
As noisy intermediate-scale quantum (NISQ) processors increase in size and complexity, their use as general purpose quantum simulators will rely on algorithms based on the Trotter-…
Phase space geometry and optimal state preparation in quantum metrology with collective spins
Manuel H. Muñoz-Arias, Ivan H. Deutsch, Pablo M. Poggi
We revisit well-known protocols in quantum metrology using collective spins and propose a unifying picture for optimal state preparation based on a semiclassical description in pha…
Scrambling and quantum chaos indicators from long-time properties of operator distributions
Sivaprasad Omanakuttan, Karthik Chinni, Philip Daniel Blocher +1
Scrambling is a key concept in the analysis of nonequilibrium properties of quantum many-body systems. Most studies focus on its characterization via out-of-time-ordered correlatio…
Floquet time crystals in driven spin systems with all-to-all -body interactions
Manuel H. Muñoz-Arias, Karthik Chinni, Pablo M. Poggi
We show the emergence of Floquet time crystal (FTC) phases in the Floquet dynamics of periodically driven -spin models, which describe a collection of spin-1/2 particles with al…
Trotter errors from dynamical structural instabilities of Floquet maps in quantum simulation
Karthik Chinni, Manuel H. Muñoz-Arias, Ivan H. Deutsch +1
We study the behavior of errors in the quantum simulation of spin systems with long-range multi-body interactions resulting from the Trotter-Suzuki decomposition of the time-evolut…
Diverging quantum speed limits: a herald of classicality
Pablo M. Poggi, Steve Campbell, Sebastian Deffner
When is the quantum speed limit (QSL) really quantum? While vanishing QSL times often indicate emergent classical behavior, it is still not entirely understood what precise aspects…
The effect of chaos on the simulation of quantum critical phenomena in analog quantum simulators
Karthik Chinni, Pablo M. Poggi, Ivan H. Deutsch
We study how chaos, introduced by a weak perturbation, affects the reliability of the output of analog quantum simulation. As a toy model, we consider the Lipkin-Meshkov-Glick (LMG…
Nonlinear dynamics and quantum chaos of a family of kicked -spin models
Manuel H. Muñoz-Arias, Pablo M. Poggi, Ivan H. Deutsch
We introduce kicked -spin models describing a family of transverse Ising-like models for an ensemble of spin- particles with all-to-all -body interaction terms occurring…
Generating nonlinearities from conditional linear operations, squeezing and measurement for quantum computation and super-Heisenberg sensing
Mattias T. Johnsson, Pablo M. Poggi, Marco A. Rodríguez +2
Large optical nonlinearities can have numerous applications, ranging from the generation of cat-states for optical quantum computation, through to quantum sensing where the sensiti…
Quantifying the sensitivity to errors in analog quantum simulation
Pablo M. Poggi, Nathan K. Lysne, Kevin W. Kuper +2
Quantum simulators are widely seen as one of the most promising near-term applications of quantum technologies. However, it remains unclear to what extent a noisy device can output…
Simulation of complex dynamics of mean-field -spin models using measurement-based quantum feedback control
Manuel H. Muñoz-Arias, Ivan H. Deutsch, Poul S. Jessen +1
We study the application of a new method for simulating nonlinear dynamics of many-body spin systems using quantum measurement and feedback [Muñoz-Arias et al., Phys. Rev. Lett. 12…
Analysis of lower bounds for quantum control times and their relation to the quantum speed limit
Pablo M. Poggi
Limitations to the speed of evolution of quantum systems, typically referred to as quantum speed limits (QSLs), have important consequences for quantum control problems. However, i…
Robust Mølmer-Sørensen gate for neutral atoms using rapid adiabatic Rydberg dressing
Anupam Mitra, Michael J. Martin, Grant W. Biedermann +3
The Rydberg blockade mechanism is now routinely considered for entangling qubits encoded in clock states of neutral atoms. Challenges towards implementing entangling gates with hig…
Simulating nonlinear dynamics of collective spins via quantum measurement and feedback
Manuel H. Muñoz-Arias, Pablo M. Poggi, Poul S. Jessen +1
We study a method to simulate quantum many-body dynamics of spin ensembles using measurement-based feedback. By performing a weak collective measurement on a large ensemble of two-…
Information backflow as a resource for entanglement
Nicolás Mirkin, Pablo Poggi, Diego Wisniacki
The issue of whether non-Markovianity (NM) could be considered as a resource in quantum information has been a subject of intense debate for the last years. Recently, a simple mech…