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13 papers · 2 filters
Nonsymmetrized Correlations in Quantum Noninvasive Measurements
Adam Bednorz, Christoph Bruder, Bertrand Reulet +1
A long-standing problem in quantum mesoscopic physics is which operator order corresponds to noise expressions like <I(-ω)I(ω)>, where I(ω) is the measured current at frequency ω.…
Quantum Heating of a nonlinear resonator probed by a superconducting qubit
F. R. Ong, M. Boissonneault, F. Mallet +5
We measure the quantum fluctuations of a pumped nonlinear resonator, using a superconducting artificial atom as an in-situ probe. The qubit excitation spectrum gives access to the…
A State Distillation Protocol to Implement Arbitrary Single-qubit Rotations
Guillaume Duclos-Cianci, Krysta M. Svore
An important task required to build a scalable, fault-tolerant quantum computer is to efficiently represent an arbitrary single-qubit rotation by fault-tolerant quantum operations.…
Local topological order inhibits thermal stability in 2D
Olivier Landon-Cardinal, David Poulin
We study the robustness of quantum information stored in the degenerate ground space of a local, frustration-free Hamiltonian with commuting terms on a 2D spin lattice. On one hand…
First-order sidebands in circuit QED using qubit frequency modulation
Félix Beaudoin, Marcus P. da Silva, Zachary Dutton +1
Sideband transitions have been shown to generate controllable interaction between superconducting qubits and microwave resonators. Up to now, these transitions have been implemente…
-Echo Sequence - Protecting the state of a qubit in the presence of coherent interaction
Clemens Müller, Alexander Shnirman, Martin Weides
We propose a sequence of pulses intended to preserve the state of a qubit in the presence of strong, coherent coupling to another quantum system. The sequence can be understood as…