Gary A. Steele
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View article: On-chip stencil lithography for superconducting qubits
On-chip stencil lithography for superconducting qubits Open
Improvements in circuit design and more recently in materials and surface cleaning have contributed to a rapid development of coherent superconducting qubits. However, organic resists commonly used for shadow evaporation of Josephson junct…
View article: Magnon-magnon interaction induced by nonlinear spin wave dynamics
Magnon-magnon interaction induced by nonlinear spin wave dynamics Open
We experimentally and theoretically demonstrate that nonlinear spin-wave dynamics can induce an effective resonant interaction between non-resonant magnon modes in a yttrium iron garnet disk. Under strong pumping near the ferromagnetic res…
View article: High-coherence quantum acoustics with planar superconducting qubits
High-coherence quantum acoustics with planar superconducting qubits Open
Quantum acoustics is an emerging platform for hybrid quantum technologies enabling quantum coherent control of mechanical vibrations. High-overtone bulk acoustic resonators (HBARs) represent an attractive mechanical implementation of quant…
View article: All-microwave Lamb shift engineering for a fixed frequency multi-level superconducting qubit
All-microwave Lamb shift engineering for a fixed frequency multi-level superconducting qubit Open
It is known that the electromagnetic vacuum is responsible for the Lamb shift, which is a crucial phenomenon in quantum electrodynamics (QED). In circuit QED, the readout or bus resonators that are dispersively coupled can result in a sign…
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: Quantum Sensing and Measurement
Quantum Sensing and Measurement Open
In this open textbook, we explore concepts of sensing, noise, and measurement in the dynamics of open quantum systems.
View article: Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback
Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback Open
Microwave cavities are commonly used in many experiments, including optomechanics, magnetic field sensing, magnomechanics, and circuit quantum electrodynamics. Noise, such as variations in the magnetic field or mechanical vibrations, can c…
View article: Data and processing for "Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback"
Data and processing for "Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback" Open
This folder contains all the code and data necessary to produce the figures of the paper titled "Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback" written by Jean-Paul van Soest, Clinton A. Potts, Sarwan Peite…
View article: Data and processing for "Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback"
Data and processing for "Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback" Open
This folder contains all the code and data necessary to produce the figures of the paper titled "Multitone Microwave Frequency Locking to a Noisy Cavity via Real-Time Feedback" written by Jean-Paul van Soest, Clinton A. Potts, Sarwan Peite…
View article: All-microwave Lamb shift engineering for a fixed frequency multi-level superconducting qubit
All-microwave Lamb shift engineering for a fixed frequency multi-level superconducting qubit Open
It is known that the electromagnetic vacuum is responsible for the Lamb shift, which is a crucial phenomenon in quantum electrodynamics (QED). In circuit QED, the readout or bus resonators that are dispersively coupled can result in a sign…
View article: Designing spin and orbital sources of Berry curvature at oxide interfaces
Designing spin and orbital sources of Berry curvature at oxide interfaces Open
Dataset corresponding to the publication: "E. Lesne et al., Designing spin and orbital sources of Berry curvature at oxide interfaces" (https://doi.org/10.48550/arXiv.2201.12161).
View article: Designing spin and orbital sources of Berry curvature at oxide interfaces
Designing spin and orbital sources of Berry curvature at oxide interfaces Open
Dataset corresponding to the publication: "E. Lesne et al., Designing spin and orbital sources of Berry curvature at oxide interfaces" (https://doi.org/10.48550/arXiv.2201.12161).
View article: Room-temperature several-hundred-of-megahertz charge sensing with single-electron resolution using a silicon transistor
Room-temperature several-hundred-of-megahertz charge sensing with single-electron resolution using a silicon transistor Open
We demonstrate charge detection with single-electron resolution at high readout frequency using a silicon field-effect transistor (FET) integrated with double resonant circuits. A FET, whose channel of 10-nm width enables a single electron…
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: Resolving non-perturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit
Resolving non-perturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit Open
Source data that supports the plots in the main sections of the published work Phys. Rev. Lett. 131, 193605 (2023).
View article: Resolving non-perturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit
Resolving non-perturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit Open
Source data that supports the plots in the main sections of the published work Phys. Rev. Lett. 131, 193605 (2023).
View article: Resolving non-perturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit
Resolving non-perturbative renormalization of a microwave-dressed weakly anharmonic superconducting qubit Open
Microwave driving is a ubiquitous technique for superconducting qubits (SCQs), but the dressed states description based on the conventionally used perturbation theory cannot fully capture the dynamics in the strong driving limit. Comprehen…
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: Critical current fluctuations in graphene Josephson junctions.
Critical current fluctuations in graphene Josephson junctions. Open
Experimental dataset for article “Critical current fluctuations in graphene Josephson junctions.” Scientific Reports 11, 19900 (2021). https://doi.org/10.1038/s41598-021-99398-3
View article: Critical current fluctuations in graphene Josephson junctions.
Critical current fluctuations in graphene Josephson junctions. Open
Experimental dataset for article “Critical current fluctuations in graphene Josephson junctions.” Scientific Reports 11, 19900 (2021). https://doi.org/10.1038/s41598-021-99398-3
View article: Designing spin and orbital sources of Berry curvature at oxide interfaces
Designing spin and orbital sources of Berry curvature at oxide interfaces Open
Quantum materials can display physical phenomena rooted in the geometry of electronic wavefunctions. The corresponding geometric tensor is characterized by an emergent field known as Berry curvature (BC). Large BCs typically arise when ele…
View article: Two-photon sideband interaction in a driven quantum Rabi model: Quantitative discussions with derived longitudinal drives and beyond the rotating wave approximation
Two-photon sideband interaction in a driven quantum Rabi model: Quantitative discussions with derived longitudinal drives and beyond the rotating wave approximation Open
In this paper, we analytically and numerically study the sideband interaction dynamics of the driven quantum Rabi model (QRM). We focus in particular on the conditions when the external transverse drive fields induce first-order sideband i…
View article: The Physics of Spontaneous Emission and Quantum Mechanical Decay
The Physics of Spontaneous Emission and Quantum Mechanical Decay Open
A term paper I wrote as part of the AMO course 8.421 (https://ocw.mit.edu/courses/physics/8-421-atomic-and-optical-physics-i-spring-2014/) I took at MIT in 2000 from Wolfgang Ketterle. I keep referring to it in discussions and so I thought…