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- Canadian Institute for Advanced ResearchCA270 papers
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35 papers · 1 filter
Markov entropy decomposition: a variational dual for quantum belief propagation
David Poulin, Matthew B. Hastings
We present a lower bound for the free energy of a quantum many-body system at finite temperature. This lower bound is expressed as a convex optimization problem with linear constra…
Quantum Phase Estimation with Arbitrary Constant-precision Phase Shift Operators
Hamed Ahmadi, Chen-Fu Chiang
While Quantum phase estimation (QPE) is at the core of many quantum algorithms known to date, its physical implementation (algorithms based on quantum Fourier transform (QFT)) is h…
Orbital and interlayer Skyrmions crystals in bilayer graphene
R. Cote, Wenchen Luo, Branko Petrov +2
A graphene bilayer in a transverse magnetic field has a set of Landau levels with energies where is the effective cyclotron…
Circuit QED with a Nonlinear Resonator : ac-Stark Shift and Dephasing
F. R. Ong, M. Boissonneault, F. Mallet +7
We have performed spectroscopic measurements of a superconducting qubit dispersively coupled to a nonlinear resonator driven by a pump microwave field. Measurements of the qubit fr…
A superconducting qubit with Purcell protection and tunable coupling
J. M. Gambetta, A. A. Houck, Alexandre Blais
We present a superconducting qubit for the circuit quantum electrodynamics architecture that has a tunable coupling strength g. We show that this coupling strength can be tuned fro…
A renormalization group analysis of the one-dimensional extended Hubbard model
M. Ménard, C. Bourbonnais
The phase diagram of the one-dimensional extended Hubbard model at half-filling is investigated by a weak coupling renormalization group method applicable beyond the usual continuu…