8 papers
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…
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…
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…
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…
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…
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…