64 citations · 282 across the 22 of their papers we have counts for
22 papers
Mitigating crosstalk errors for simultaneous single-qubit gates on a superconducting quantum processor
Jaap J. Wesdorp, Eric Hyyppä, Joona Andersson +61
Single-qubit gates on superconducting quantum processors are typically implemented using microwave pulses applied through dedicated control lines. However, these microwave pulses m…
Practical quantum teleportation with finite-energy codebooks
W. K. Yam, M. Renger, S. Gandorfer +2
Quantum communication exploits non-classical correlations to achieve efficient and unconditionally secure exchange of information. In particular, the quantum teleportation protocol…
Above 99.9% Fidelity Single-Qubit Gates, Two-Qubit Gates, and Readout in a Single Superconducting Quantum Device
Fabian Marxer, Jakub Mrożek, Joona Andersson +64
Achieving high-fidelity single-qubit gates, two-qubit gates, and qubit readout is critical for building scalable, error-corrected quantum computers. However, device parameters that…
Quantum algorithms for simulating systems coupled to bosonic modes using a hybrid resonator-qubit quantum computer
Juha Leppäkangas, Pascal Stadler, Dmitry Golubev +14
Modeling composite systems of spins or electrons coupled to bosonic modes is of significant interest for many fields of applied quantum physics and chemistry. A quantum simulation…
Quantum error detection in qubit-resonator star architecture
Florian Vigneau, Sourav Majumder, Aniket Rath +13
Achieving industrial quantum advantage is unlikely without the use of quantum error correction (QEC). Other QEC codes beyond surface code are being experimentally studied, such as…
A Superconducting Qubit-Resonator Quantum Processor with Effective All-to-All Connectivity
Michael Renger, Jeroen Verjauw, Nicola Wurz +62
In this work we introduce a superconducting quantum processor architecture that uses a transmission-line resonator to implement effective all-to-all connectivity between six transm…
Demonstration of microwave single-shot quantum key distribution
F. Fesquet, F. Kronowetter, M. Renger +7
Security of modern classical data encryption often relies on computationally hard problems, which can be trivialized with the advent of quantum computers. A potential remedy for th…
Cryogenic microwave link for quantum local area networks
W. K. Yam, M. Renger, S. Gandorfer +16
Scalable quantum information processing with superconducting circuits is expected to advance from individual processors located in single dilution refrigerators to more powerful di…
Two-dimensional Planck spectroscopy for microwave photon calibration
S. Gandorfer, M. Renger, W. K. Yam +4
Quantum state tomography of weak microwave signals is an important part of many protocols in the field of quantum information processing with superconducting circuits. This step ty…
Quantum microwave parametric interferometer
F. Kronowetter, F. Fesquet, M. Renger +7
Classical interferometers are indispensable tools for the precise determination of various physical quantities. Their accuracy is bound by the standard quantum limit. This limit ca…
Flow of quantum correlations in noisy two-mode squeezed microwave states
M. Renger, S. Pogorzalek, F. Fesquet +10
We study nonclassical correlations in propagating two-mode squeezed microwave states in the presence of noise. We focus on two different types of correlations, namely, quantum enta…
Quantum behavior of a superconducting Duffing oscillator at the dissipative phase transition
Qi-Ming Chen, Michael Fischer, Yuki Nojiri +8
Understanding the non-deterministic behavior of deterministic nonlinear systems has been an implicit dream since Lorenz named it the "butterfly effect". A prominent example is the…
Propagating Quantum Microwaves: Towards Applications in Communication and Sensing
Mateo Casariego, Emmanuel Zambrini Cruzeiro, Stefano Gherardini +22
The field of propagating quantum microwaves has started to receive considerable attention in the past few years. Motivated at first by the lack of an efficient microwave-to-optical…
Open-Air Microwave Entanglement Distribution for Quantum Teleportation
Tasio Gonzalez-Raya, Mateo Casariego, Florian Fesquet +7
Microwave technology plays a central role in current wireless communications, standing among them mobile communication and local area networks (LANs). The microwave range shows rel…
Perspectives of microwave quantum key distribution in open-air
Florian Fesquet, Fabian Kronowetter, Michael Renger +8
One of the cornerstones of quantum communication is the unconditionally secure distribution of classical keys between remote parties. This key feature of quantum technology is base…
The scattering coefficients of superconducting microwave resonators: II. System-bath approach
Qi-Ming Chen, Matti Partanen, Florian Fesquet +8
We describe a unified quantum approach for analyzing the scattering coefficients of superconducting microwave resonators with a variety of geometries. We also generalize the method…
The scattering coefficients of superconducting microwave resonators: I. Transfer-matrix approach
Qi-Ming Chen, Meike Pfeiffer, Matti Partanen +9
We describe a unified classical approach for analyzing the scattering coefficients of superconducting microwave resonators with a variety of geometries. To fill the gap between exp…
Tuning and Amplifying the Interactions in Superconducting Quantum Circuits with Subradiant Qubits
Qi-Ming Chen, Florian Fesquet, Kedar E. Honasoge +7
We propose a tunable coupler consisting of N fixed-frequency qubits, which can tune and even amplify the effective interaction between two superconducting quantum circuits. The tun…
Experimental quantum teleportation of propagating microwaves
K. G. Fedorov, M. Renger, S. Pogorzalek +9
The modern field of quantum communication thrives on promise to deliver efficient and unconditionally secure ways to exchange information by exploiting quantum laws of physics. Her…
In-situ tunable nonlinearity and competing signal paths in coupled superconducting resonators
Michael Fischer, Qi-Ming Chen, Christian Besson +10
We have fabricated and studied a system of two tunable and coupled nonlinear superconducting resonators. The nonlinearity is introduced by galvanically coupled dc-SQUIDs. We simula…
Quantum Fourier Transform in Oscillating Modes
Qi-Ming Chen, Frank Deppe, Re-Bing Wu +9
Quantum Fourier transform (QFT) is a key ingredient of many quantum algorithms where a considerable amount of ancilla qubits and gates are often needed to form a Hilbert space larg…
Compact 3D quantum memory
Edwar Xie, Frank Deppe, Michael Renger +8
Superconducting 3D microwave cavities offer state-of-the-art coherence times and a well controlled environment for superconducting qubits. In order to realize at the same time fast…