Sublinear scaling in non-Markovian open quantum systems simulations

M Cygorek, J Keeling, BW Lovett, EM Gauger - Physical Review X, 2024 - APS
While several numerical techniques are available for predicting the dynamics of non-
Markovian open quantum systems, most struggle with simulations for very long memory and …

Treelike process tensor contraction for automated compression of environments

M Cygorek, BW Lovett, J Keeling, EM Gauger - Physical Review Research, 2024 - APS
The algorithm “automated compression of environments”(ACE)[M. Cygorek, Nat. Phys. 18,
662 (2022) 1745-2473 10.1038/s41567-022-01544-9] provides a versatile way of simulating …

Role of polaron dressing in superradiant emission dynamics

J Wiercinski, M Cygorek, EM Gauger - Physical Review Research, 2024 - APS
Cooperative effects of multiple quantum emitters are characterized by transitions via
delocalized collective states with altered emission properties due to the existence of …

Phonon coupling versus pure dephasing in the photon statistics of cooperative emitters

J Wiercinski, EM Gauger, M Cygorek - Physical Review Research, 2023 - APS
Realizing scalable quantum networks requires a meticulous level of understanding and
mitigating the deleterious effects of decoherence. Many quantum device platforms feature …

Learning the dynamics of Markovian open quantum systems from experimental data

S Wallace, Y Altmann, BD Gerardot, EM Gauger… - arxiv preprint arxiv …, 2024 - arxiv.org
We present a Bayesian algorithm to identify generators of open quantum system dynamics,
described by a Lindblad master equation, that are compatible with measured experimental …

Dissipative stabilization of maximal entanglement between nonidentical emitters via two-photon excitation

A Vivas-Viaña, D Martín-Cano, CS Muñoz - Physical Review Research, 2024 - APS
Two nonidentical quantum emitters, when placed within a cavity and coherently excited at
the two-photon resonance, can reach stationary states of nearly maximal entanglement. In …

ACE: A general-purpose non-Markovian open quantum systems simulation toolkit based on process tensors

M Cygorek, EM Gauger - arxiv preprint arxiv:2405.19319, 2024 - arxiv.org
We describe a general-purpose computational toolkit for simulating open quantum systems,
which provides numerically exact solutions for composites of zero-dimensional quantum …

Long-lived quantum correlation by cavity-mediated subradiance

KY Kim, JH Lee, WB Jeon, DH Park, SI Park… - arxiv preprint arxiv …, 2024 - arxiv.org
Cooperative effects such as super (sub) radiance in quantum systems arise from the
interplay among quantum emitters. While bright superradiant states have been extensively …

Photon correlation time-asymmetry and dynamical coherence in multichromophoric systems

C Nation, HO Gestsson, A Olaya-Castro - arxiv preprint arxiv:2404.16892, 2024 - arxiv.org
We theoretically investigate polarization-filtered two-photon correlations for the light emitted
by a multichromophoric system undergoing excitation transport under realistic exciton …

Controlling cooperative emission and superradiance in waveguide-coupled quantum dots

D Hallett, J Wiercinski, L Hallacy, S Sheldon… - arxiv preprint arxiv …, 2024 - arxiv.org
We report the measurement of collective emission from a pair of independently tuneable
InAs quantum dots embedded in a nanophotonic waveguide. A split diode structure allows …