Zlatko's Quantum Notebook New talks, lectures and notes by Zlatko K. Minev https://zlatko-minev.github.io/zlatko-minev-quantum-repository/ 2026-01-01T00:00:00Z Superconducting Qubits 101: cQED Quantum Hardware https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2026-superconducting-qubits-101-cqed-quantum-hardware/ 2026-01-01T00:00:00Z Zlatko K. Minev From atoms to artificial atoms: how a transmon qubit arises from an LC oscillator plus a Josephson junction, and how circuit-QED (cQED) devices are modeled. OTOC-NMR Experiment: Error Mitigation, Modeling and Results https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2026-otoc-nmr-experiment-error-mitigation-modeling-and/ 2026-01-01T00:00:00Z Zlatko K. Minev Error mitigation for an OTOC experiment on a Willow processor benchmarked against NMR data, using a Pauli-path-based ZNE. Your First Superconducting Qubit: Intro to cQED, Part II https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2025-your-first-superconducting-qubit-intro-to-cqed-part-ii/ 2025-01-01T00:00:00Z Zlatko K. Minev Part II of an intro to circuit QED: quantizing the LC oscillator, the transmon's Kerr Hamiltonian, and energy-participation (EPR) modeling of qubit-resonator devices. Your First Superconducting Qubit: Intro to cQED, Part I https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2025-your-first-superconducting-qubit-intro-to-cqed-part-i/ 2025-01-01T00:00:00Z Zlatko K. Minev A first lecture on superconducting qubits: from atoms and oscillators to the transmon, building up the classical LC circuit along the way. Overview of Quantum Hardware Design: Energy, Circuits, and Metal https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2025-overview-of-quantum-hardware-design-energy-circuits/ 2025-01-01T00:00:00Z Zlatko K. Minev How to design superconducting quantum chips: layout in Qiskit Metal, the LOM and EPR quantization methods, and automated analysis. Machine Learning for Practical Quantum Error Mitigation (ML-QEM) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2025-machine-learning-for-practical-quantum-error/ 2025-01-01T00:00:00Z Zlatko K. Minev Using machine learning to cut the runtime cost of quantum error mitigation, with tests up to utility-scale circuits. Life & Lessons as a Scientist in “Real Life” (career talk) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2025-life-and-lessons-as-a-scientist-in-real-life/ 2025-01-01T00:00:00Z Zlatko K. Minev A short career talk on life and lessons as a scientist, from a physics degree through a Yale Ph.D. to industry quantum research. A Prelude to Practical Quantum Computing https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2025-a-prelude-to-practical-quantum-computing/ 2025-01-01T00:00:00Z Zlatko K. Minev A short tour of where superconducting quantum computers stand, what a qubit is, and why noise and error mitigation matter. Uncovering Local Integrability in Quantum Many-Body Dynamics https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2024-uncovering-local-integrability-in-quantum-many-body/ 2024-01-01T00:00:00Z Zlatko K. Minev Extracting local integrals of motion from error-mitigated many-body dynamics on up to 124 qubits of a superconducting processor. Introduction to Noise and Quantum Error Mitigation, Lecture 2 https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2024-introduction-to-noise-and-quantum-error-mitigation-lecture-2/ 2024-01-01T00:00:00Z Zlatko K. Minev Second lecture on quantum error mitigation: probabilistic error cancellation, shot-noise statistics, and learning sparse noise models. Introduction to Noise and Quantum Error Mitigation, Lecture 1 https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2024-introduction-to-noise-and-quantum-error-mitigation-lecture-1/ 2024-01-01T00:00:00Z Zlatko K. Minev First lecture on noise and quantum error mitigation, building up to probabilistic error cancellation from a one-qubit example. Fibonacci Anyons and String-Net Condensation; Entanglement-Enhanced Learning of Quantum Processes at Scale https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2024-fibonacci-anyons-and-string-net-condensation/ 2024-01-01T00:00:00Z Zlatko K. Minev Preparing a Fibonacci string-net condensate on superconducting hardware to sample chromatic polynomials and braid Fibonacci anyons. Simple Noise Models and Gate Fidelity https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/t27-simple-noise-models-and-gate-fidelity/ 2023-01-01T00:00:00Z Zlatko K. Minev Pedagogical note on depolarizing and bit-flip channels, average gate and entanglement fidelity, and their Pauli-Lindblad form. Introduction to Many-Body Physics: Exploring Spin Models for Quantum Computing Scientists https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/t26-introduction-to-many-body-physics-exploring-spin-models/ 2023-01-01T00:00:00Z Zlatko K. Minev A pedagogical tech note on spin models: the 1D Anderson model as hard-core bosons, spectra, one-particle density matrices and conserved quantities. Quantum Error Mitigation, Lecture 3 https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-quantum-error-mitigation-lecture-3/ 2023-01-01T00:00:00Z Zlatko K. Minev PEC applied to transverse-field Ising dynamics, then a 124-qubit experiment that uncovers local integrals of motion. Quantum Error Mitigation, Lecture 2 https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-quantum-error-mitigation-lecture-2/ 2023-01-01T00:00:00Z Zlatko K. Minev Lecture 2 on error mitigation for quantum dynamics: probabilistic error cancellation, its statistics, and learning noise with sparse Pauli-Lindblad models. Quantum Error Mitigation, Lecture 1 https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-quantum-error-mitigation-lecture-1/ 2023-01-01T00:00:00Z Zlatko K. Minev Opening lecture on error mitigation for non-equilibrium quantum dynamics, from noisy hardware to probabilistic error cancellation. PEC Derivation: Single Qubit, Simple (C65B) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-pec-derivation-single-qubit-simple-c65b/ 2023-01-01T00:00:00Z Zlatko K. Minev Hand-written derivation of probabilistic error cancellation (PEC) for a single noisy qubit gate, using an ansatz and trajectory picture. PEC Derivation: Full Derivation (C65C) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-pec-derivation-full-derivation-c65c/ 2023-01-01T00:00:00Z Zlatko K. Minev Handwritten notes (C65C) deriving probabilistic error cancellation and its error-mitigated expectation value. Machine Learning for Practical Quantum Error Mitigation (ML-QEM) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-machine-learning-for-practical-quantum-error/ 2023-01-01T00:00:00Z Haoran Liao A seminar on ML-QEM: training regression models and neural networks to mitigate noisy expectation values at low runtime cost. Intro to Quantum Noise (main lecture) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-intro-to-quantum-noise-main-lecture/ 2023-01-01T00:00:00Z Zlatko K. Minev Why a simple qubit-flipping circuit fails on real hardware, and what coherent, incoherent and measurement noise do to it. Intro to Quantum Measurements, Part I: Ideal Measurements https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-intro-to-quantum-measurements-part-i-ideal-measurements/ 2023-01-01T00:00:00Z Zlatko K. Minev Tutorial on ideal quantum measurement: generalized measurements (POVMs), the Born rule, shot statistics, error bars, and measuring in rotated bases. Hello Quantum World! (career talk) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-hello-quantum-world/ 2023-01-01T00:00:00Z Zlatko K. Minev A guest lecture mixing a physicist's career path and lessons learned with an introduction to quantum computing, noise, and quantum hardware design. Coherent ZZ Error (bonus) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2023-coherent-zz-error/ 2023-01-01T00:00:00Z Zlatko K. Minev A one-page bonus note on coherent ZZ errors (an always-on qubit-qubit coupling) from an introduction to quantum noise. Bounding a Sum of Operators (à la Watrous) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/t22-bounding-a-sum-of-operators-a-la-watrous/ 2022-01-01T00:00:00Z Zlatko K. Minev A worked proof of Watrous's Lemma 3.3: bounding the norm of a weighted sum of positive semidefinite operators. Estimating Observables from Sampled Bit Strings https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/t21-estimating-observables-from-sampled-bit-strings/ 2022-01-01T00:00:00Z Zlatko K. Minev A technical note on how sampling error in measured bitstrings carries over to estimated observables like Pauli-Z expectation values. State Preparation Noise (bonus) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-state-preparation-noise/ 2022-01-01T00:00:00Z Zlatko K. Minev Bonus handwritten note on state-preparation noise, from an introduction to quantum noise lecture. Qiskit Metal: Quantum Device Design and Analysis (Q-EDA) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-qiskit-metal-quantum-device-design-and-analysis-q-eda/ 2022-01-01T00:00:00Z Thomas G. McConkeyZlatko K. Minev Qiskit Metal as an open-source quantum EDA tool: its architecture, analysis methods, renderers, and adoption. Primer on Pauli Twirling, Part IV https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-primer-on-pauli-twirling-part-iv/ 2022-01-01T00:00:00Z Zlatko K. Minev Later sections of a Pauli twirling primer: unitary t-designs, Pauli and chi-matrix noise models, the Pauli transfer matrix (PTM), and twirling amplitude damping. Primer on Pauli Twirling, Part III https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-primer-on-pauli-twirling-part-iii/ 2022-01-01T00:00:00Z Zlatko K. Minev The theory behind Pauli twirling: Pauli transfer matrices, superoperators, and why twirling masks a channel down to a Pauli channel. Primer on Pauli Twirling, Part II https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-primer-on-pauli-twirling-part-ii/ 2022-01-01T00:00:00Z Zlatko K. Minev Why Pauli twirling works: worked examples on bit-flip and coherent-rotation channels using Pauli transfer matrices. Primer on Pauli Twirling, Part I https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-primer-on-pauli-twirling-part-i/ 2022-01-01T00:00:00Z Zlatko K. Minev A primer on Pauli twirling: how random Pauli gates turn general noise, including coherent errors, into stochastic Pauli noise. Overview of Quantum Hardware Design: Qiskit Metal, from Fab-It to Qubit https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-overview-of-quantum-hardware-design-qiskit-metal-from/ 2022-01-01T00:00:00Z Zlatko K. Minev The layers of superconducting chip design, from layout and EM simulation to Hamiltonians and gates, and how Qiskit Metal ties them together. Overview of Quantum Hardware Design: Energy, Circuits, and Metal (Qiskit Metal) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-overview-of-quantum-hardware-design-energy-circuits/ 2022-01-01T00:00:00Z Zlatko K. Minev An overview of superconducting quantum chip design with Qiskit Metal: layout, EM simulation, quantization methods, and community use. Measurement Noise (note) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-measurement-noise/ 2022-01-01T00:00:00Z Zlatko K. Minev Handwritten lecture note on measurement (readout) error, with a visualization of readout error, from the Qiskit Global Summer School 2022. Measurement (note) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-measurement/ 2022-01-01T00:00:00Z Zlatko K. Minev Lecture notes on measurement and projection noise: each shot is a Bernoulli trial, so a finite number of shots gives binomial sampling error. To Learn and Cancel Quantum Noise: PEC with Sparse Pauli-Lindblad Models https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-learn-and-cancel-quantum-noise-pec-qiskit-seminar/ 2022-01-01T00:00:00Z Zlatko K. Minev Learning sparse Pauli-Lindblad noise models and using them for probabilistic error cancellation on a noisy quantum processor. To Learn and Cancel Quantum Noise: PEC with Sparse Pauli-Lindblad Models https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-learn-and-cancel-quantum-noise-pec-kitp/ 2022-01-01T00:00:00Z Zlatko K. Minev Learning and canceling noise on quantum processors: probabilistic error cancellation with sparse Pauli-Lindblad models. Intro to Real Quantum Computers and Noise https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-intro-to-real-quantum-computers-and-noise/ 2022-01-01T00:00:00Z Zlatko K. Minev A lecture on real noisy quantum computers, why error mitigation matters, and how probabilistic error cancellation learns and cancels noise. Intro to Quantum Noise (main lecture) https://zlatko-minev.github.io/zlatko-minev-quantum-repository/items/2022-intro-to-quantum-noise-main-lecture/ 2022-01-01T00:00:00Z Zlatko K. Minev An introduction to noise on real quantum processors, from coherent gate errors to incoherent noise, projection noise and noisy meters.