Daniel Bothner
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View article: Superconducting on-chip microwave cavity for tunable hybrid systems with optically trapped Rydberg atoms
Superconducting on-chip microwave cavity for tunable hybrid systems with optically trapped Rydberg atoms Open
Hybrid quantum systems are highly promising platforms for addressing important challenges of quantum information science and quantum sensing. Their implementation, however, is technologically non-trivial, since each component typically has…
View article: Extracting the current-phase-relation of a monolithic three-dimensional nano-constriction using a DC-current-tunable superconducting microwave cavity
Extracting the current-phase-relation of a monolithic three-dimensional nano-constriction using a DC-current-tunable superconducting microwave cavity Open
Superconducting circuits with nonlinear elements such as Josephson tunnel junctions or kinetic inductance nanowires are the workhorse for microwave quantum and superconducting sensing technologies. For devices, which can be operated at hig…
View article: Apparent nonlinear damping triggered by quantum fluctuations
Apparent nonlinear damping triggered by quantum fluctuations Open
Nonlinear damping, the change in damping rate with the amplitude of oscillations plays an important role in many electrical, mechanical and even biological oscillators. In novel technologies such as carbon nanotubes, graphene membranes or …
View article: Niobium Quantum Interference Microwave Circuits with Monolithic Three-Dimensional (3D) Nanobridge Junctions
Niobium Quantum Interference Microwave Circuits with Monolithic Three-Dimensional (3D) Nanobridge Junctions Open
Nonlinear microwave circuits are key elements for many groundbreaking research directions and technologies, such as quantum computation and quantum sensing. The majority of microwave circuits with Josephson nonlinearities to date is based …
View article: A flux-tunable YBa2Cu3O7 quantum interference microwave circuit: data and figures
A flux-tunable YBa2Cu3O7 quantum interference microwave circuit: data and figures Open
This contains the data and processing scripts used for the figures of the manuscript and supplementary material of "A flux-tunable YBa2Cu3O7 quantum interference microwave circuit", published as Applied Physics Letters 122, 000000 (2023); …
View article: Photon-Pressure with an Effective Negative Mass Microwave Mode
Photon-Pressure with an Effective Negative Mass Microwave Mode Open
Harmonic oscillators belong to the most fundamental concepts in physics and are central to many current research fields such as circuit QED, cavity optomechanics and photon-pressure systems. Here, we engineer a microwave mode in a supercon…
View article: Parametrically enhanced interactions and nonreciprocal bath dynamics in a photon-pressure Kerr amplifier
Parametrically enhanced interactions and nonreciprocal bath dynamics in a photon-pressure Kerr amplifier Open
Photon-pressure coupling between two superconducting circuits is a promising platform for investigating radiation-pressure coupling in distinct parameter regimes and for the development of radio-frequency (RF) quantum photonics and quantum…
View article: Parametrically enhanced interactions and non-reciprocal bath dynamics in a photon-pressure Kerr amplifier
Parametrically enhanced interactions and non-reciprocal bath dynamics in a photon-pressure Kerr amplifier Open
Data and measurements scripts for the paper "Parametrically enhanced interactions and non-reciprocal bath dynamics in a photon-pressure Kerr amplifier"
View article: Parametrically enhanced interactions and non-reciprocal bath dynamics in a photon-pressure Kerr amplifier
Parametrically enhanced interactions and non-reciprocal bath dynamics in a photon-pressure Kerr amplifier Open
Data and measurements scripts for the paper "Parametrically enhanced interactions and non-reciprocal bath dynamics in a photon-pressure Kerr amplifier"
View article: Parametrically enhanced interactions and non-trivial bath dynamics in a photon-pressure Kerr amplifier
Parametrically enhanced interactions and non-trivial bath dynamics in a photon-pressure Kerr amplifier Open
Photon-pressure coupling between two superconducting circuits is a promising platform for investigating radiation-pressure coupling in novel parameter regimes and for the development of radio-frequency (RF) quantum photonics and quantum-li…
View article: Cavity-driven Rabi oscillations between Rydberg states of atoms trapped on a superconducting atom chip
Cavity-driven Rabi oscillations between Rydberg states of atoms trapped on a superconducting atom chip Open
Hybrid quantum systems involving cold atoms and microwave resonators can enable cavity-mediated infinite-range interactions between atomic spin systems and realize atomic quantum memories and transducers for microwave-to-optical conversion…
View article: Level attraction and idler resonance in a strongly driven Josephson cavity
Level attraction and idler resonance in a strongly driven Josephson cavity Open
Nonlinear Josephson circuits play a crucial role in the growing landscape of quantum information and technologies. The typical circuits studied in this field consist of qubits, whose anharmonicity is much larger than their linewidth, and a…
View article: Four-wave-cooling to the single phonon level in Kerr optomechanics
Four-wave-cooling to the single phonon level in Kerr optomechanics Open
This contains the data and processing scripts used for the figures of the manuscript and supplementary material of "Four-wave-cooling to the single phonon level in Kerr optomechanics".
View article: Four-wave-cooling to the single phonon level in Kerr optomechanics
Four-wave-cooling to the single phonon level in Kerr optomechanics Open
This contains the data and processing scripts used for the figures of the manuscript and supplementary material of "Four-wave-cooling to the single phonon level in Kerr optomechanics".
View article: Level attraction and idler resonance in a strongly driven Josephson cavity
Level attraction and idler resonance in a strongly driven Josephson cavity Open
This contains the data and processing scripts used for the figures of the manuscript of "Level attraction and idler resonance in a strongly driven Josephson cavity"
View article: Level attraction and idler resonance in a strongly driven Josephson cavity
Level attraction and idler resonance in a strongly driven Josephson cavity Open
This contains the data and processing scripts used for the figures of the manuscript of "Level attraction and idler resonance in a strongly driven Josephson cavity"
View article: Level attraction and idler resonance in a strongly driven Josephson cavity
Level attraction and idler resonance in a strongly driven Josephson cavity Open
Nonlinear Josephson circuits play a crucial role in the growing landscape of quantum information and technologies. The typical circuits studied in this field consist of qubits, whose anharmonicity is much larger than their linewidth, and a…
View article: Cavity driven Rabi oscillations between Rydberg states of atoms trapped on a superconducting atom chip
Cavity driven Rabi oscillations between Rydberg states of atoms trapped on a superconducting atom chip Open
Hybrid quantum systems involving cold atoms and microwave resonators can enable cavity-mediated infinite-range interactions between atomic spin systems and realize atomic quantum memories and transducers for microwave to optical conversion…
View article: Emergence of nonlinear friction from quantum fluctuations
Emergence of nonlinear friction from quantum fluctuations Open
Nonlinear damping, a force of friction that depends on the amplitude of motion, plays an important role in many electrical, mechanical and even biological oscillators. In novel technologies such as carbon nanotubes, graphene membranes or s…
View article: Apparent nonlinear damping triggered by quantum fluctuations
Apparent nonlinear damping triggered by quantum fluctuations Open
Nonlinear damping, the change in damping rate with the amplitude of oscillations plays an important role in many electrical, mechanical and even biological oscillators. In novel technologies such as carbon nanotubes, graphene membranes or …
View article: Four-wave-cooling to the single phonon level in Kerr optomechanics
Four-wave-cooling to the single phonon level in Kerr optomechanics Open
The field of cavity optomechanics has achieved groundbreaking photonic control and detection of mechanical oscillators, based on their coupling to linear electromagnetic modes. Lately, however, there is an uprising interest in exploring ca…
View article: Data and code for "Emergence of nonlinear friction from quantum fluctuations"
Data and code for "Emergence of nonlinear friction from quantum fluctuations" Open
This folder contains all the code necessary to produce the figures of the paper entitled "Emergence of nonlinear friction from quantum fluctuations". Content: The data.dat file is a human readable file containing the data underlying all r…
View article: Data and code for "Emergence of nonlinear friction from quantum fluctuations"
Data and code for "Emergence of nonlinear friction from quantum fluctuations" Open
This folder contains all the code necessary to produce the figures of the paper entitled "Emergence of nonlinear friction from quantum fluctuations". Content: The data.dat file is a human readable file containing the data underlying all r…
View article: Photon-pressure coupling with a hot radio-frequency circuit in the quantum regime
Photon-pressure coupling with a hot radio-frequency circuit in the quantum regime Open
Quantum control over a physical system requires thermal fluctuations and thermal decoherence to be negligible, which becomes more challenging with decreasing natural frequencies of the target system. For microwave circuits, the quantum reg…
View article: Data and processing for "Current detection using a Josephson parametric upconverter"
Data and processing for "Current detection using a Josephson parametric upconverter" Open
This directory contains all the code and data necessary to produce the figures of the paper titled "Current detection using a Josephson parametric upconverter" written by Felix E. Schmidt, Daniel Bothner, Ines C. Rodrigues, Mario F. Gely, …
View article: Photon-Pressure Strong-Coupling between two Superconducting Circuits
Photon-Pressure Strong-Coupling between two Superconducting Circuits Open
This contains the data and processing scripts used for the figures of the manuscript and supplementary material of "Photon-Pressure Strong-Coupling between two Superconducting Circuits"
View article: Data for "Cavity electromechanics with parametric mechanical driving"
Data for "Cavity electromechanics with parametric mechanical driving" Open
Data as plotted in the Main Paper and Supplementary Material. Raw data of the main paper. In addition some python and labview analysis and fitting scripts, as well as origin files used for processing and plotting.
View article: Optomechanical Microwave Amplification without Mechanical Amplification
Optomechanical Microwave Amplification without Mechanical Amplification Open
High-gain and low-noise signal amplification is a valuable tool in various cryogenic microwave experiments. A microwave optomechanical device, in which a vibrating capacitor modulates the frequency of a microwave cavity, is one technique t…