5 citations · 5 across the 25 of their papers we have counts for
19 papers · 1 filter
PULSUS: Direct Frequency-Domain Multidimensional Spectroscopy Beyond the Impulsive Rotating-Wave Approximation
Alfonso Castillo-Gonzalez, Alfonso Castillo-Gonzolez, Eric R. Bittner +1
We introduce PULSUS, a direct frequency-domain framework for multidimensional spectroscopy of open quantum systems beyond the impulsive rotating-wave approximation. Coherence-frequ…
SAKE: Spectral Autodiff Kernel Expansion for Geometric Liouvillian Transport. A Differential-Geometric Framework for Response Transport in Quantum Dynamical Systems
Eric R. Bittner, Carlos Silva-Acuna, Hao Li +1
We introduce the Spectral Autodiff Kernel Expansion (SAKE), a differentiable computational framework for transporting nonlinear spectroscopic response between neighboring quantum d…
State--Generator Geometry of Open Quantum Systems: Compatibility and Covariant Transport
Eric R. Bittner, Carlos Silva-Acuna
We develop a geometry for transporting stationary-state response across the control space of an open quantum system. A physical model is represented by the ordered pair of its stat…
Geometric Response in Open Quantum Systems: Coherence, Curvature, and Susceptibility
Eric R. Bittner, Carlos Silva-Acuña
We develop a response-geometric framework for open quantum systems by decomposing the stationary-state response tensor into symmetric and antisymmetric sectors. The symmetric secto…
Liouvillian Geometry of Multidimensional Spectra: Pathway Transport and Observational Holonomy in Open Quantum Systems
Eric R. Bittner, Carlos Silva-Acuña, Hao Li
Liouville pathways provide the conceptual foundation for interpreting multidimensional spectroscopies and are commonly represented as independent contributions to the nonlinear res…
Holonomy and Complementarity in Open Quantum Systems
Eric R Bittner
Complementarity relations constrain the distribution of coherence, predictability, and openness in quantum systems. Here we show that, in open quantum systems, these local constrai…
Phase-Reference Control of Steady-State Entanglement in Open Quantum Systems
Areeda Ayoub, Alfonso Castillo-Gonzalez, Eric R Bittner
We show that steady-state entanglement in open quantum systems is controlled by the phase reference of a phase-sensitive reservoir. Using a covariance-matrix approach for Gaussian-…
Geometric Thermodynamics in Open Quantum Systems: Coherence, Curvature, and Work
Eric R. Bittner
We formulate a geometric framework for quasistatic thermodynamics in open quantum systems by parameterizing the dynamics on a control manifold. In the quasistatic limit, the system…
Thermalization Regimes in a Chaotic Tavis-Cummings Model
Sameer Dambal, Eric R. Bittner
This work investigates the emergent thermalization regimes in a chaotic Tavis-Cummings (TC) model and their implications in quantum spectroscopy. While the TC model is a cornerston…
Graph Symmetry Organizes Exceptional Dynamics in Open Quantum Systems
Eric R. Bittner, Bhavay Tyagi, Kevin E. Bassler
Exceptional points (EPs), indicative of parity-time (PT) symmetry breaking, play a central role in non-Hermitian physics, yet most studies begin from deliberately engineered effect…
Entropy Flow and Exceptional-Point Structure in Two-Mode Squeezed-Bath Dynamics
Eric R. Bittner
Squeezed reservoirs provide a powerful means of engineering nonclassical noise and controlling irreversible dynamics in open quantum systems. Here we develop a comprehensive analys…
Topology and Spectral Entanglement in Cavity-Mediated Photon Scattering
Eric R. Bittner, Andrei Piryatinski
We develop a diagrammatic theory of cavity-mediated photon-photon interactions in a topological insulator using the SSH model. The fourth-order vertex governs sp…
A Clockwork Quantum: Symmetry, Noise, and the Emergence of Quantum Order
Eric R. Bittner, Bhavay Tyagi
We present a concise review and perspective on noise-induced synchronization and coherence protection in open quantum systems, with emphasis on recent work involving coupled spins,…
Tensorial Spin-Phonon Relaxation Reveals Mode-Selective Relaxation Pathways in a Single-Molecule Magnet
Roman Dmitriev, Nosheen Younas, Yu Zhang +2
Understanding and controlling spin relaxation in molecular qubits is essential for developing chemically tunable quantum information platforms. We present a fully first-principles…
Statistical Control of Relaxation and Synchronization in Open Anyonic Systems
Eric R. Bittner, Bhavay Tyagi
Quantum statistics dictate how particles exchange and correlate-but in two-dimensional systems, these rules extend beyond bosons and fermions to anyons, quasiparticles with continu…
Noise-induced synchronization in coupled quantum oscillators
Eric R Bittner, Bhavay Tyagi
We consider the quantum dynamics of a pair of coupled quantum oscillators coupled to a common correlated dissipative environment. The resulting equations of motion for both the ope…
A quantum analog of Huygen's clock: noise-induced synchronization
Bhavay Tyagi, Hao Li, Eric R. Bittner +2
We propose a quantum analogue of the Huygens clock, in which the phases of two spins achieve synchronization through their interaction with a shared environment. The environment fu…
Spin/Phonon Dynamics in Single Molecular Magnets: I. quantum embedding
Nosheen Younas, Yu Zhang, Andrei Piryatinski +1
Single molecular magnets (SMMs) and Metal-Organic Frameworks (MOFs) attract significant interest due to their potential in quantum information processing, scalable quantum computin…
Spin/Phonon Dynamics in Single Molecular Magnets: II. spin/phonon entanglemen
Nosheen Younas, Yu Zhang, Andrei Piryatinski +1
We introduce a new quantum embedding method to explore spin-phonon interactions in molecular magnets. This technique consolidates various spin/phonon couplings into a limited numbe…