PMKCT stabilizes non-Markovian open quantum system simulations via spectral projection, eliminating unstable modes without empirical tuning. Benchmarked on the spin-boson model, it matches exact HEOM/DEOM results with improved computational efficiency.
#QuantumDynamics #OpenQuantumSystems #Research
Left-handed time derivatives delay onset of semiclassical inaccuracy; a novel RMSE-based memory kernel cutoff protocol yields SC-GQME dynamics more accurate than bare SC methods, even in challenging regimes where prior protocols failed.
#QuantumDynamics #OpenQuantumSystems #Research
uniTEMPO enables efficient computation of multi-time correlation functions and 2D electronic spectra for non-Markovian open systems via time-translation invariant MPO, achieving superior O((χd²)²M²) scaling over PT-TEMPO without real-time evolution.
#QuantumSimulation #OpenQuantumSystems #Research
Lecture notes deriving irreversible open quantum system dynamics through the dissipative Jaynes-Cummings model, proving the Kraus representation, dilation theorem, and GKSL theorem for Markovian semigroup generators.
#OpenQuantumSystems #QuantumTheory #Research
Lamb shift acts as a control knob in open quantum batteries: tuning the driving frequency to renormalized eigenmodes enables mode-selective switching of energy between charger and battery, with circuit QED experimental feasibility demonstrated.
#QuantumBatteries #OpenQuantumSystems #Research
Unitary-projective electron dynamics—interleaving Hamiltonian evolution with Born-rule state updates—enables passive single-electron valves, novel non-equilibrium magnetism, and super-Carnot energy conversion in engineered quantum materials.
#QuantumMaterials #OpenQuantumSystems #Research
UC Berkeley-led team proved simulating open quantum systems with non-Markovian Gaussian baths achieves O(log²(1/ωcε)) complexity independent of simulation time—cost scales with spectral density sharpness, not duration.
#OpenQuantumSystems #QuantumSimulation #News
A nonperturbative framework reconstructs reduced quantum dynamics from divergent TCL generators in the spin-boson model, exposing finite-time loss of invertibility and measurable early-time anisotropy as continuum environment signatures.
#OpenQuantumSystems #QuantumDecoherence #Research
Researchers developed a Schwinger-Keldysh/2PI effective action framework using 1/N Schwinger boson expansion, accurately modeling open quantum spins across all coupling and memory regimes—validated against tensor-network simulations.
#OpenQuantumSystems #QuantumSimulation #News
Using a minimal two-qubit setup, exceptional points emerge only in local (not global) Lindblad/non-Hermitian master equations under nonequilibrium drive — experimentally accessible in circuit-QED platforms.
#NonHermitianPhysics #OpenQuantumSystems #Research
🧪⚛️[3/3] A huge thank you to the Theoretical Physics Coordination at CBPF for the kind invitation and for hosting me. The questions and subsequent discussion were a true highlight and have given me so much to think about.
#Physics #Quantum #QuantumComputing #Complexity #OpenQuantumSystems
NITheCS Colloquium: ‘A Brief History of Open Quantum Systems' by Dr Graeme Pleasance (Stellenbosch University) - Mon, 28 July 2025 @ 16h00-17h00 SAST. Attend online or in person.
buff.ly/oQ7ZqcB
#Quantum #OpenQuantumSystems #iyq2025 #Thermodynamics
Here is the preprint:
arxiv.org/abs/2506.23928
#OpenQuantumSystems #ComputationalPhysics #ManyBodyPhysics #QuantumMonteCarlo #QuantumMetrology #Quantum 🧪
🧠✨ Can a quantum system learn better just by tweaking its boundaries?
New IFISC study in Optica Quantum shows how the Liouvillian skin effect shapes learning in quantum neural networks through dissipation.
🔗 ifisc.uib-csic.es/en/news/ifis...
#QuantumComputing #MachineLearning #OpenQuantumSystems
