5.7k citations
- Canadian Institute for Advanced ResearchCA270 papers
- Institut quantiqueCA231 papers
- Centre National de la Recherche ScientifiqueFR163 papers
- Regroupement Québécois sur les Matériaux de PointeCA163 papers
- University of British ColumbiaCA56 papers
- ETH ZurichCH50 papers
- McGill UniversityCA50 papers
- Brookhaven National LaboratoryUS43 papers
- Université Paris-SaclayFR43 papers
- University of WaterlooCA41 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR39 papers
- Yale UniversityUS39 papers
10 papers · 2 filters
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…
A renormalization group decoding algorithm for topological quantum codes
Guillaume Duclos-Cianci, David Poulin
Topological quantum error-correcting codes are defined by geometrically local checks on a two-dimensional lattice of quantum bits (qubits), making them particularly well suited for…
Information preserving structures: A general framework for quantum zero-error information
Robin Blume-Kohout, Hui Khoon Ng, David Poulin +1
Quantum systems carry information. Quantum theory supports at least two distinct kinds of information (classical and quantum), and a variety of different ways to encode and preserv…
Improved Superconducting Qubit Readout by Qubit-Induced Nonlinearities
Maxime Boissonneault, J. M. Gambetta, Alexandre Blais
In dispersive readout schemes, qubit-induced nonlinearity typically limits the measurement fidelity by reducing the signal-to-noise ratio (SNR) when the measurement power is increa…
Control and Tomography of a Three Level Superconducting Artificial Atom
R. Bianchetti, S. Filipp, M. Baur +6
A number of superconducting qubits, such as the transmon or the phase qubit, have an energy level structure with small anharmonicity. This allows for convenient access of higher ex…