10 papers
Continuous-Time Random Walk Description of Anomalous Spin Transport in Dilute Dipolar Networks
Cooper M. Selco, Christian Bengs, Ashok Ajoy
Nuclear spin diffusion is often summarized by a single diffusion coefficient, but this coarse-grained description can fail in dilute solids where positional disorder and long-range…
Tunable Mpemba Effect in a Prethermal Many-Body Spin Network
Chaitali Shah, Cooper M. Selco, Leo Joon Il Moon +1
Relaxation in an interacting system is determined not only by its initial distance from equilibrium, but also by the relaxation modes populated by the initial state. Here we experi…
A geometric framework for spin relaxation
Sophia N. Fricke, Kieren A. Harkins, Ashok Ajoy +1
Spin relaxation is conventionally described by two independent phenomenological rates - longitudinal () and transverse () - whose separation obscures a deeper structural…
Breakdown of Disorder-Suppressed Floquet Heating under Two-Frequency Driving
Cooper M. Selco, Christian Bengs, Chaitali Shah +1
Periodic (Floquet) driving enables Hamiltonian engineering and nonequilibrium phases, but interacting systems eventually heat by absorbing energy from the drive. Disorder can great…
Robust Quantum Sensing via Prethermal Spin Orbits
Enrico Daniel Richter, Ryan J. Smith, Brayden Glockzin +3
Practical performance of quantum sensors is often curtailed by uncontrolled environmental drift (bias-field instability, temperature fluctuations, mechanical vibration), background…
Emergent Decoherence Dynamics in Doubly Disordered Spin Networks
Cooper M. Selco, Christian Bengs, Chaitali Shah +2
Elucidating the emergence of irreversible macroscopic laws from reversible quantum many-body dynamics is a question of broad importance across all quantum science. Many-body decohe…
Out-of-time-order correlators bridge classical transport and quantum dynamics
Sophia N. Fricke, Haiyan Mao, Manas Sajjan +4
The out-of-time-order correlator (OTOC) has emerged as a central tool for quantifying decoherence across wide-ranging physical platforms. Here we demonstrate its direct measurement…
Constructive interference at the edge of quantum ergodic dynamics
Dmitry A. Abanin, Rajeev Acharya, Laleh Aghababaie-Beni +262
Quantum observables in the form of few-point correlators are the key to characterizing the dynamics of quantum many-body systems. In dynamics with fast entanglement generation, qua…
Modulator-Assisted Zeno Control of Energy Transfer in Quantum Batteries
Songbo Xie, Manas Sajjan, Ashok Ajoy +1
Efficient operation of quantum batteries requires not only fast energy transfer but also the ability to halt the charging process to prevent reverse flow. Existing approaches typic…
Fundamental bounds on many-body spin cluster intensities
Christian Bengs, Chongwei Zhang, Ashok Ajoy
Multiple-quantum coherence (MQC) spectroscopy is a powerful technique for probing spin clusters, offering insights into diverse materials and quantum many-body systems. However, pr…