Search Results - "Cîrstoiu, Cristina"

Variational fast forwarding for quantum simulation beyond the coherence time by Cîrstoiu, Cristina, Holmes, Zoë, Iosue, Joseph, Cincio, Lukasz, Coles, Patrick J., Sornborger, Andrew

“…Trotterization-based, iterative approaches to quantum simulation (QS) are restricted to simulation times less than the coherence time of the quantum computer…”
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Robustness of Noether’s Principle: Maximal Disconnects between Conservation Laws and Symmetries in Quantum Theory by Cîrstoiu, Cristina, Korzekwa, Kamil, Jennings, David

“…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…”
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Simple formulation of no-cloning and no-hiding that admits efficient and robust verification by Girling, Matthew, Cîrstoiu, Cristina, Jennings, David

“…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…”
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Estimation of correlations and nonseparability in quantum channels via unitarity benchmarking by Girling, Matthew, Cîrstoiu, Cristina, Jennings, David

“…The ability to transfer quantum information between systems is a fundamental component of quantum technologies and leads to correlations within the global…”
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Volumetric Benchmarking of Error Mitigation with Qermit by Cirstoiu, Cristina, Dilkes, Silas, Mills, Daniel, Sivarajah, Seyon, Duncan, Ross

“…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,…”
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Efficient recovery of variational quantum algorithms landscapes using classical signal processing by Fontana, Enrico, Rungger, Ivan, Duncan, Ross, Cîrstoiu, Cristina

“…We employ spectral analysis and compressed sensing to identify settings where a variational algorithm's cost function can be recovered purely classically or…”
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Spectral analysis for noise diagnostics and filter-based digital error mitigation by Fontana, Enrico, Rungger, Ivan, Duncan, Ross, Cîrstoiu, Cristina

“…We investigate the effects of noise on parameterised quantum circuits using spectral analysis and classical signal processing tools. For different noise…”
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Classical simulations of noisy variational quantum circuits by Fontana, Enrico, Rudolph, Manuel S, Duncan, Ross, Rungger, Ivan, Cîrstoiu, Cristina

“…Noise detrimentally affects quantum computations so that they not only become less accurate but also easier to simulate classically as systems scale up. We…”
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A Fourier analysis framework for approximate classical simulations of quantum circuits by Cirstoiu, Cristina

“…What makes a class of quantum circuits efficiently classically simulable on average? I present a framework that applies harmonic analysis of groups to circuits…”
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Volumetric Benchmarking of Error Mitigation with Qermit by Cirstoiu, Cristina, Dilkes, Silas, Mills, Daniel, Sivarajah, Seyon, Duncan, Ross

“…Quantum 7, 1059 (2023) The detrimental effect of noise accumulates as quantum computers grow in size. In the case where devices are too small or noisy to…”
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Irreversibility and symmetry principles in quantum information by Cirstoiu, Cristina

“…Symmetry principles have played a crucial role in the development of modern physics and underpin our most fundamental theories of nature. The present thesis is…”
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A simple formulation of no-cloning and no-hiding that admits efficient and robust verification by Girling, Matthew, Cirstoiu, Cristina, Jennings, David

“…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…”
Get full text

Estimation of correlations and non-separability in quantum channels via unitarity benchmarking by Girling, Matthew, Cirstoiu, Cristina, Jennings, David

“…Phys. Rev. Research 4, 023041 (2022) The ability to transfer coherent quantum information between systems is a fundamental component of quantum technologies…”
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Robustness of Noether's principle: Maximal disconnects between conservation laws and symmetries in quantum theory by Cirstoiu, Cristina, Korzekwa, Kamil, Jennings, David

“…Phys. Rev. X 10, 041035 (2020) To what extent does Noether's principle apply to quantum channels? Here, we quantify the degree to which imposing a symmetry…”
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Global and local gauge symmetries beyond Lagrangian formulations by Cirstoiu, Cristina, Jennings, David

“…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…”
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Variational Fast Forwarding for Quantum Simulation Beyond the Coherence Time by Cirstoiu, Cristina, Holmes, Zoe, Iosue, Joseph, Cincio, Lukasz, Coles, Patrick J, Sornborger, Andrew

“…npj Quantum Information 6, 82 (2020) Trotterization-based, iterative approaches to quantum simulation are restricted to simulation times less than the…”
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Limits to catalysis in quantum thermodynamics by Ng, Nelly Huei Ying, Mančinska, Laura, Cirstoiu, Cristina, Eisert, Jens, Wehner, Stephanie

“…New J. Phys. 17, 085004 (2015) Quantum thermodynamics is a research field that aims at fleshing out the ultimate limits of thermodynamic processes in the deep…”
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