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- Canadian Institute for Advanced ResearchCA270 papers
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20 papers · 2 filters
Short random circuits define good quantum error correcting codes
Winton Brown, Omar Fawzi
We study the encoding complexity for quantum error correcting codes with large rate and distance. We prove that random Clifford circuits with gates can be used to e…
Tensor Networks and Quantum Error Correction
Andrew J. Ferris, David Poulin
We establish several relations between quantum error correction (QEC) and tensor network (TN) methods of quantum many-body physics. We exhibit correspondences between well-known fa…
Thermalization, Error-Correction, and Memory Lifetime for Ising Anyon Systems
Courtney G. Brell, Simon Burton, Guillaume Dauphinais +2
We consider two-dimensional lattice models that support Ising anyonic excitations and are coupled to a thermal bath. We propose a phenomenological model for the resulting short-tim…
Hardness of decoding quantum stabilizer codes
Pavithran Iyer, David Poulin
In this article we address the computational hardness of optimally decoding a quantum stabilizer code. Much like classical linear codes, errors are detected by measuring certain ch…
Fourier transform of fermionic systems and the spectral tensor network
Andrew J. Ferris
Leveraging the decomposability of the fast Fourier transform, I propose a new class of tensor network that is efficiently contractible and able to represent many-body systems with…
Superconducting qubit as a probe of quantum fluctuations in a nonlinear resonator
Maxime Boissonneault, A. C. Doherty, F. R. Ong +4
In addition to their central role in quantum information processing, qubits have proven to be useful tools in a range of other applications such as enhanced quantum sensing and as…