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6 papers · 2 filters
Gate-error analysis in simulations of quantum computers with transmon qubits
D. Willsch, M. Nocon, F. Jin +2
In the model of gate-based quantum computation, the qubits are controlled by a sequence of quantum gates. In superconducting qubit systems, these gates can be implemented by voltag…
Three-qubit direct dispersive parity measurement with Tunable Coupling Qubits
Alessandro Ciani, David DiVincenzo
We consider the direct three-qubit parity measurement scheme with two measurement resonators, using circuit quantum electrodynamics to analyze its functioning for several different…
Analysis of parametrically driven exchange-type (iSWAP) and two-photon (bSWAP) interactions between superconducting qubits
Marco Roth, Marc Ganzhorn, Nikolaj Moll +3
A current bottleneck for quantum computation is the realization of high-fidelity two-qubit quantum operations between two and more quantum bits in arrays of coupled qubits. Gates b…
Inductively shunted transmon qubit with tunable transverse and longitudinal coupling
Susanne Richer, Nataliya Maleeva, Sebastian T. Skacel +2
We present the design of an inductively shunted transmon qubit with flux-tunable coupling to an embedded harmonic mode. This circuit construction offers the possibility to flux-cho…
Benchmarking gate-based quantum computers
Kristel Michielsen, Madita Nocon, Dennis Willsch +3
With the advent of public access to small gate-based quantum processors, it becomes necessary to develop a benchmarking methodology such that independent researchers can validate t…
Delayed Coherent Quantum Feedback from a Scattering Theory and a Matrix Product State Perspective
Pierre-Olivier Guimond, Mikhail Pletyukhov, Hannes Pichler +1
We study the scattering of photons propagating in a semi-infinite waveguide terminated by a mirror and interacting with a quantum emitter. This paradigm constitutes an example of c…