238 citations · 298 across the 13 of their papers we have counts for
14 papers
Benchmarking the computational power of quantum computers
Timothy Proctor, Oliver Hart, Oliver Widzowski Maupin +27
Quantum computing hardware is advancing rapidly toward utility-scale machines that will enable scientific breakthroughs. Many teams are pursuing distinct and difficult-to-compare r…
Deep Learning Approaches to Quantum Error Mitigation
Leonardo Placidi, Ifan Williams, Enrico Rinaldi +4
We present a systematic investigation of deep learning methods applied to quantum error mitigation of noisy output probability distributions from measured quantum circuits. We comp…
Characterization of syndrome-dependent logical noise in detector regions
Matthew Girling, Ben Criger, Cristina Cirstoiu
Characterizing how quantum error correction circuits behave under realistic hardware noise is essential for testing the premises that enable scalable fault tolerance. Logical error…
Digital quantum magnetism on a trapped-ion quantum computer
Reza Haghshenas, Eli Chertkov, Michael Mills +56
Digital quantum matter -- realized when discrete quantum gates approximate continuous time evolution -- is susceptible to heating into chaotic, structureless states. If digitizatio…
A Fourier analysis framework for approximate classical simulations of quantum circuits
Cristina Cirstoiu
What makes a class of quantum circuits efficiently classically simulable on average? I present a framework that applies harmonic analysis of groups to circuits with a structure enc…
Classical simulations of noisy variational quantum circuits
Enrico Fontana, Manuel S. Rudolph, Ross Duncan +2
Noise detrimentally affects quantum computations so that they not only become less accurate but also easier to simulate classically as systems scale up. We construct a classical si…
A simple formulation of no-cloning and no-hiding that admits efficient and robust verification
Matthew Girling, Cristina Cirstoiu, David Jennings
Incompatibility is a feature of quantum theory that sets it apart from classical theory, and the inability to clone an unknown quantum state is one of the most fundamental instance…
Efficient recovery of variational quantum algorithms landscapes using classical signal processing
Enrico Fontana, Ivan Rungger, Ross Duncan +1
We employ spectral analysis and compressed sensing to identify settings where a variational algorithm's cost function can be recovered purely classically or with minimal quantum co…
Spectral analysis for noise diagnostics and filter-based digital error mitigation
Enrico Fontana, Ivan Rungger, Ross Duncan +1
We investigate the effects of noise on parameterised quantum circuits using spectral analysis and classical signal processing tools. For different noise models, we quantify the add…
Volumetric Benchmarking of Error Mitigation with Qermit
Cristina Cirstoiu, Silas Dilkes, Daniel Mills +2
The detrimental effect of noise accumulates as quantum computers grow in size. In the case where devices are too small or noisy to perform error correction, error mitigation may be…
Estimation of correlations and non-separability in quantum channels via unitarity benchmarking
Matthew Girling, Cristina Cirstoiu, David Jennings
The ability to transfer coherent quantum information between systems is a fundamental component of quantum technologies and leads to coherent correlations within the global quantum…
Variational Fast Forwarding for Quantum Simulation Beyond the Coherence Time
Cristina Cirstoiu, Zoe Holmes, Joseph Iosue +3
Trotterization-based, iterative approaches to quantum simulation are restricted to simulation times less than the coherence time of the quantum computer, which limits their utility…
Robustness of Noether's principle: Maximal disconnects between conservation laws and symmetries in quantum theory
Cristina Cirstoiu, Kamil Korzekwa, David Jennings
To what extent does Noether's principle apply to quantum channels? Here, we quantify the degree to which imposing a symmetry constraint on quantum channels implies a conservation l…
Global and local gauge symmetries beyond Lagrangian formulations
Cristina Cirstoiu, David Jennings
What is the structure of general quantum processes on composite systems that respect a global or local symmetry principle? How does the irreversible use of quantum resources behave…