Publications — Cristina Cirstoiu

Characterization of syndrome-dependent logical noise in detector regions

Aug 2025 — preprint on arXiv. View on arXiv

Classical simulations of noisy variational quantum circuits

May 2025 — Published in npjQI.

Digital quantum magnetism at the frontier of classical simulations

Mar 2025 — preprint on arXiv. View on arXiv

Algorithms

Digital quantum magnetism at the frontier of classical simulations
Reza Haghshenas, Eli Chertkov, Michael Mills, Wilhelm Kadow, Sheng-Hsuan Lin, Yi-Hsiang Chen, Chris Cade, Ido Niesen, Tomislav Begušić, Manuel S. Rudolph, Cristina Cirstoiu, Kevin Hemery, Conor Mc Keever, Michael Lubasch, Etienne Granet, Charles H. Baldwin, John P. Bartolotta, Matthew Bohn, Julia Cline, Matthew DeCross, Joan M. Dreiling, Cameron Foltz, David Francois, John P. Gaebler, Christopher N. Gilbreth, Johnnie Gray, Dan Gresh, Alex Hall, Aaron Hankin, Azure Hansen, Nathan Hewitt, Ross B. Hutson, Mohsin Iqbal, Nikhil Kotibhaskar, Elliot Lehman, Dominic Lucchetti, Ivaylo S. Madjarov, Karl Mayer, Alistair R. Milne, Steven A. Moses, Brian Neyenhuis, Gunhee Park, Boris Ponsioen, Michael Schecter, Peter E. Siegfried, David T. Stephen, Bruce G. Tiemann, Maxwell D. Urmey, James Walker, Andrew C. Potter, David Hayes, Garnet Kin-Lic Chan, Frank Pollmann, Michael Knap, Henrik Dreyer, Michael Foss-Feig
arxiv:2503.20870
A Fourier analysis framework for approximate classical simulations of quantum circuits
C Cirstoiu
arxiv:2410.13856
Slides
Classical simulations of noisy variational quantum circuits
Enrico Fontana, Manuel Rudolph, Ross Duncan, Ivan Rungger, Cristina Cîrstoiu
npj Quantum Information volume 11, Article number: 84 (2025)
arxiv:2306.05400
Efficient recovery of variational quantum algorithms landscapes using classical signal processing
Enrico Fontana, Ivan Rungger, Ross Duncan, Cristina Cîrstoiu
arXiv:2208.05958
Variational fast forwarding for quantum simulation beyond the coherence time
Cristina Cîrstoiu, Zoe Holmes, Jos Iosue, L Cincio, PJ Coles, A Sornborger
npj Quantum Information 6, 82 (2020)
arXiv:1910.04292

Quantum error characterisation, mitigation and validation

Characterization of syndrome-dependent logical noise in detector regions
C Cirstoiu, M Girling, D Jennings
arxiv:2508.08188
Simple formulation of no-cloning and no-hiding that admits efficient and robust verification
M Girling, C Cîrstoiu, D Jennings
Phys. Rev. Research 6, 023090 (2024)
arxiv:2303.02662
Volumetric benchmarking of error mitigation with Qermit
C Cirstoiu, S Dilkes, D Mills, S Sivarajah, R Duncan
Quantum, 2023
Open source software available QERMIT
arXiv:2204.09725
Spectral analysis for noise diagnostics and filter-based digital error mitigation
E Fontana, I Rungger, R Duncan, C Cîrstoiu
arXiv:2206.08811
Estimation of correlations and nonseparability in quantum channels via unitarity benchmarking
M Girling, C Cîrstoiu, D Jennings
Phys. Rev. Research 4, 023041 (2022)
arXiv:2104.04352

Symmetries, resource theories and quantum thermodynamics

Robustness of noether's principle: Maximal disconnects between conservation laws and symmetries in quantum theory
C Cîrstoiu, K Korzekwa, D Jennings
Phys. Rev. X 10, 041035 (2020)
arXiv:1908.04254

Global and local gauge symmetries beyond Lagrangian formulations

arXiv:1707.09826

Limits to catalysis in quantum thermodynamics
NHY Ng, L Mančinska, C Cirstoiu, J Eisert, S Wehner
New Journal of Physics, 2015
arXiv:1405.3039
Irreversibility and symmetry principles in quantum information
C Cirstoiu
PhD Thesis, Imperial College London, 2019