274 citations · 1.4k across the 28 of their papers we have counts for
28 papers
Quantum state randomization constrained by non-Abelian symmetries
Yuhan Wu, Joaquin F. Rodriguez-Nieva
The emergence of randomness from unitary quantum dynamics is a central problem across diverse disciplines, ranging from the foundations of statistical mechanics to quantum algorith…
Randomization Times under Quantum Chaotic Hamiltonian Evolution
Souradeep Ghosh, Nicholas Hunter-Jones, Joaquin F. Rodriguez-Nieva
Randomness generation through quantum-chaotic evolution underpins foundational questions in statistical mechanics and applications across quantum information science, including ben…
Quantum chaos at finite temperature in local spin Hamiltonians
Christopher M. Langlett, Cheryne Jonay, Vedika Khemani +1
Understanding the emergence of chaos in many-body quantum systems away from semi-classical limits, particularly in spatially local interacting spin Hamiltonians, has been a long-st…
Late-time ensembles of quantum states in quantum chaotic systems
Souradeep Ghosh, Christopher M. Langlett, Nicholas Hunter-Jones +1
We study the universal structure of late-time ensembles obtained from unitary dynamics in quantum chaotic systems with symmetries, such as charge or energy conservation. We find th…
Entanglement patterns of quantum chaotic Hamiltonians with a scalar U(1) charge
Christopher M. Langlett, Joaquin F. Rodriguez-Nieva
Our current understanding of quantum chaos in many-body quantum systems hinges on the random matrix theory(RMT) behavior of eigenstates and their energy level statistics. Although…
Quantifying quantum chaos through microcanonical distributions of entanglement
Joaquin F. Rodriguez-Nieva, Cheryne Jonay, Vedika Khemani
A characteristic feature of "quantum chaotic" systems is that their eigenspectra and eigenstates display universal statistical properties described by random matrix theory (RMT). H…
Goldstone bosons and fluctuating hydrodynamics with dipole and momentum conservation
Paolo Glorioso, Xiaoyang Huang, Jinkang Guo +2
We develop a Schwinger-Keldysh effective field theory describing the hydrodynamics of a fluid with conserved charge and dipole moments, together with conserved momentum. The result…
Elastocaloric signatures of symmetric and antisymmetric strain-tuning of quadrupolar and magnetic phases in DyB2C2
Linda Ye, Yue Sun, Veronika Sunko +7
The adiabatic elastocaloric effect measures the temperature change of given systems with strain and probes the entropic landscape in the temperature-strain space. In this study we…
Far-from-equilibrium universality in two-dimensional Heisenberg antiferromagnets
Zhaoyi Li, Paolo Glorioso, Joaquin F. Rodriguez-Nieva
We study the far-from-equilibrium dynamics of isolated two-dimensional Heisenberg antiferromagnets. We consider spin spiral initial conditions which imprint a position-dependent st…
Slow thermalization and subdiffusion in conserving Floquet random circuits
Cheryne Jonay, Joaquin F. Rodriguez-Nieva, Vedika Khemani
Random quantum circuits are paradigmatic models of minimally structured and analytically tractable chaotic dynamics. We study a family of Floquet unitary circuits with Haar random…
Far-from-equilibrium universality in the two-dimensional Heisenberg model
Joaquin F. Rodriguez-Nieva, Asier Piñeiro Orioli, Jamir Marino
We characterize the universal far-from-equilibrium dynamics of the two-dimensional quantum Heisenberg magnet isolated from its environment. For a broad range of initial conditions,…
Breakdown of hydrodynamics below four dimensions in a fracton fluid
Paolo Glorioso, Jinkang Guo, Joaquin F. Rodriguez-Nieva +1
We present the nonlinear fluctuating hydrodynamics which governs the late time dynamics of a chaotic many-body system with simultaneous charge/mass, dipole/center of mass, and mome…
Transverse instability and universal decay of spin spiral order in the Heisenberg model
Joaquin F. Rodriguez-Nieva, Alexander Schuckert, Dries Sels +2
We analyze the stability of spin spiral states in the two-dimensional Heisenberg model. Our analysis reveals that the SU(2) symmetric point hosts a dynamic instability that is enab…
Turbulent relaxation after a quench in the Heisenberg model
Joaquin F. Rodriguez-Nieva
We predict the emergence of turbulent scaling in the quench dynamics of the two-dimensional Heisenberg model for a wide range of initial conditions and model parameters. In the iso…
A Magnon Scattering Platform
Tony X. Zhou, Joris J. Carmiggelt, Lisa M. Gächter +9
Scattering experiments have revolutionized our understanding of nature. Examples include the discovery of the nucleus, crystallography, and the discovery of the double helix struct…
Universal prethermal dynamics in Heisenberg ferromagnets
Saraswat Bhattacharyya, Joaquin F. Rodriguez-Nieva, Eugene Demler
We study the universal far from equilibrium dynamics of magnons in Heisenberg ferromagnets. We show that such systems exhibit universal scaling in momentum and time of the quasipar…
Hydrodynamic sound modes and Galilean symmetry breaking in a magnon fluid
Joaquin F. Rodriguez-Nieva, Daniel Podolsky, Eugene Demler
The non-interacting magnon gas description in ferromagnets breaks down at finite magnon density where momentum-conserving collisions between magnons become important. Observation o…
Diagnosing phases of magnetic insulators via noise magnetometry with spin qubits
Shubhayu Chatterjee, Joaquin F. Rodriguez-Nieva, Eugene Demler
Two-dimensional magnetic insulators exhibit a plethora of competing ground states, such as ordered (anti)ferromagnets, exotic quantum spin liquid states with topological order and…
Interaction Driven Quantum Hall Wedding cake-like Structures in Graphene Quantum Dots
Christopher Gutiérrez, Daniel Walkup, Fereshte Ghahari +7
Quantum-relativistic matter is ubiquitous in nature; however it is notoriously difficult to probe. The ease with which external electric and magnetic fields can be introduced in gr…
Identifying topological order through unsupervised machine learning
Joaquin F. Rodriguez-Nieva, Mathias S. Scheurer
The Landau description of phase transitions relies on the identification of a local order parameter that indicates the onset of a symmetry-breaking phase. In contrast, topological…
Probing one-dimensional systems via noise magnetometry with single spin qubits
Joaquin F. Rodriguez-Nieva, Kartiek Agarwal, Thierry Giamarchi +3
The study of exotic one-dimensional states, particularly those at the edges of topological materials, demand new experimental probes that can access the interplay between charge an…
An On/Off Berry Phase Switch in Circular Graphene Resonators
Fereshte Ghahari, Daniel Walkup, Christopher Gutiérrez +10
The phase of a quantum state may not return to its original value after the system's parameters cycle around a closed path; instead, the wavefunction may acquire a measurable phase…
Imaging electrostatically confined Dirac fermions in graphene quantum dots
Juwon Lee, Dillon Wong, Jairo Velasco +9
Electrostatic confinement of charge carriers in graphene is governed by Klein tunneling, a relativistic quantum process in which particle-hole transmutation leads to unusual anisot…
Berry phase jumps and giant nonreciprocity in Dirac quantum dots
Joaquin F. Rodriguez-Nieva, Leonid S. Levitov
We predict that a strong nonreciprocity in the resonance spectra of Dirac quantum dots can be induced by the Berry phase. The nonreciprocity arises in relatively weak magnetic fiel…