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20232026
most citedGraph Representation Learning for Parameter Transferability in Quantum Approximate Optimization Algorithm

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quant-ph2026

Generalizing Pauli Checks for Qudit-based Quantum Error Detection and Mitigation

Noble Agyeman-Bobie, Quinn Langfitt, Salahedeen Issa +2

Pauli Check Sandwiching (PCS) is a quantum error detection (QED) technique that protects a quantum circuit by utilizing a pair of controlled Pauli operators, or checks, and detecti…

quant-ph2025

Coherence Response in Noisy Quantum Measurements

Zachariah Malik, Quinn Langfitt, Zain Saleem

Readout error models for noisy quantum devices almost universally assume that measurement noise is classical: the measurement statistics are obtained from the ideal computational-b…

quant-ph2025

QuantEM: The quantum error management compiler

Ji Liu, Quinn Langfitt, Mingyoung Jessica Jeng +7

As quantum computing advances toward fault-tolerant architectures, quantum error detection (QED) has emerged as a practical and scalable intermediate strategy in the transition fro…

quant-ph2025

Quantum Fisher Information and the Curvature of Entanglement

Zain H. Saleem, Anil Shaji, Anjala M Babu +4

We explore the relationship between quantum Fisher information (QFI) and the negative of the second derivative of concurrence with respect to the coupling between two qubits, refer…

quant-ph2024

Snapshot-QAOA: Extending QAOA to Quantum Hamiltonian Simulation

Reuben Tate, Quinn Langfitt, Elijah Pelofske +4

We present Snapshot-QAOA, a variation of the Quantum Approximate Optimization Algorithm (QAOA) that finds approximate minimum energy eigenstates of a large set of quantum Hamiltoni…

quant-ph2024

Phantom Edges in the Problem Hamiltonian: A Method for Increasing Performance and Graph Visibility for QAOA

Quinn Langfitt, Reuben Tate, Stephan Eidenbenz

The Quantum Approximate Optimization Algorithm (QAOA) is a variational quantum algorithm that can be used to approximately solve combinatorial optimization problems. However, a maj…

quant-ph2024

Extrapolating Pauli Checks for Expectation Value Estimation on Noisy Quantum Devices

Quinn Langfitt, Ji Liu, Benchen Huang +4

Pauli Check Sandwiching (PCS) is an error detection scheme that protects quantum circuits by inserting pairs of parity checks and discarding runs that signal errors. However, each…

quant-ph2024★ 1 cited

Graph Representation Learning for Parameter Transferability in Quantum Approximate Optimization Algorithm

Jose Falla, Quinn Langfitt, Yuri Alexeev +1

The quantum approximate optimization algorithm (QAOA) is one of the most promising candidates for achieving quantum advantage through quantum-enhanced combinatorial optimization. O…

quant-ph2023

Enhanced quantum sensing mediated by a cavity in open systems

Quinn Langfitt, Zain H. Saleem, Tian Zhong +2

We simulate the dynamics of systems with = 1-20 qubits coupled to a cavity in order to assess their potential for quantum metrology of a parameter in the open systems limit. Th…