Adrian Bachtold
YOU?
Author Swipe
View article: Hidden Vibrational Bistability Revealed by Intrinsic Fluctuations of a Carbon Nanotube
Hidden Vibrational Bistability Revealed by Intrinsic Fluctuations of a Carbon Nanotube Open
We demonstrate that a quiet state and large-amplitude self-sustained oscillations can coexist in a carbon nanotube subject to time-independent drive. A feature of the bistability is that it would be hysteresis free in the absence of noise,…
View article: Coherent Thermal Emission from Large-Scale Suspended Nanomechanical Membranes
Coherent Thermal Emission from Large-Scale Suspended Nanomechanical Membranes Open
Thermal radiation is an abundant form of incoherent light. Generating coherent infrared light through incandescence promises a cheap alternative to the costly and epitaxially complex quantum cascade laser, however it remains a fundamental …
View article: Hidden vibrational bistability revealed by intrinsic fluctuations of a carbon nanotube
Hidden vibrational bistability revealed by intrinsic fluctuations of a carbon nanotube Open
We demonstrate that a quiet state and large-amplitude self-sustained oscillations can co-exist in a carbon nanotube subject to time-independent drive. A feature of the bistability is that it would be hysteresis-free in the absence of noise…
View article: Nanomechanical vibrational response from electrical mixing measurements
Nanomechanical vibrational response from electrical mixing measurements Open
Driven nanomechanical resonators based on low-dimensional materials are routinely and efficiently detected with electrical mixing measurements. However, the measured signal is a non-trivial combination of the mechanical eigenmode displacem…
View article: Giant ultra-broadband photoconductivity in twisted graphene heterostructures
Giant ultra-broadband photoconductivity in twisted graphene heterostructures Open
The requirements for broadband photodetection are becoming exceedingly demanding in hyperspectral imaging. Whilst intrinsic photoconductor arrays based on mercury cadmium telluride represent the most sensitive and suitable technology, thei…
View article: Steady-state Peierls transition in nanotube quantum simulator
Steady-state Peierls transition in nanotube quantum simulator Open
Quantum dots placed along a vibrating nanotube provide a quantum simulation platform that can directly address the electron-phonon interaction. This offers promising prospects for the search of new quantum materials and the study of strong…
View article: Novel Nanotube Multiquantum Dot Devices
Novel Nanotube Multiquantum Dot Devices Open
Addressable quantum states well isolated from the environment are of considerable interest for quantum information science and technology. Carbon nanotubes are an appealing system, since a perfect crystal can be grown without any missing a…
View article: Nanomechanical Resonators: Toward Atomic Scale
Nanomechanical Resonators: Toward Atomic Scale Open
The quest for realizing and manipulating ever smaller man-made movable structures and dynamical machines has spurred tremendous endeavors, led to important discoveries, and inspired researchers to venture to previously unexplored grounds. …
View article: Steady-state Peierls transition in nanotube quantum simulator
Steady-state Peierls transition in nanotube quantum simulator Open
Quantum dots placed along a vibrating nanotube provide a new quantum simulation platform that can directly address the electron-phonon interaction. This offers promising prospects for the search of new quantum materials and the study of st…
View article: Nanomechanical Resonators: Toward Atomic Scale
Nanomechanical Resonators: Toward Atomic Scale Open
The quest for realizing and manipulating ever smaller man-made movable structures and dynamical machines has spurred tremendous endeavors, led to important discoveries, and inspired researchers to venture to new grounds. Scientific feats a…
View article: Engineering high quality graphene superlattices via ion milled ultra-thin etching masks
Engineering high quality graphene superlattices via ion milled ultra-thin etching masks Open
Nanofabrication research pursues the miniaturization of patterned feature size. In the current state of the art, micron scale areas can be patterned with features down to ~ 30 nm pitch using electron beam lithography. Our work demonstrates…
View article: Steady-state Peierls transition in nanotube quantum simulator
Steady-state Peierls transition in nanotube quantum simulator Open
Quantum dots placed along a vibrating nanotube provide a quantum simulation platform that can directly address the electron-phonon interaction. This offers promising prospects for the search of new quantum materials and the study of strong…
View article: Mesoscopic physics of nanomechanical systems
Mesoscopic physics of nanomechanical systems Open
Nanomechanics has brought mesoscopic physics into the world of vibrations. Because nanomechanical systems are small, fluctuations are significant, the vibrations become nonlinear already for comparatively small amplitudes, and new mechanis…
View article: Phonon-Induced Pairing in Quantum Dot Quantum Simulator
Phonon-Induced Pairing in Quantum Dot Quantum Simulator Open
Quantum simulations can provide new insights into the physics of strongly correlated electronic systems. A well studied system, but still open in many regards, is the Hubbard-Holstein Hamiltonian, where electronic repulsion is in competiti…
View article: Proposal for a Nanomechanical Qubit
Proposal for a Nanomechanical Qubit Open
Mechanical oscillators have been demonstrated with very high quality factors over a wide range of frequencies. These also couple to a wide variety of fields and forces, making them ideal as sensors. The realization of a mechanically-based …
View article: Interrelation of Elasticity and Thermal Bath in Nanotube Cantilevers
Interrelation of Elasticity and Thermal Bath in Nanotube Cantilevers Open
We report the first study on the thermal behavior of the stiffness of individual carbon nanotubes, which is achieved by measuring the resonance frequency of their fundamental mechanical bending modes. We observe a reduction of the Young's …
View article: Fabry-Pérot Oscillations in Correlated Carbon Nanotubes
Fabry-Pérot Oscillations in Correlated Carbon Nanotubes Open
We report the observation of an intriguing behavior in the transport properties of nanodevices operating in a regime between the Fabry-Pérot and the Kondo limits. Using ultrahigh quality nanotube devices, we study how the conductance oscil…
View article: Crossover from Fabry-Pérot to charging oscillations in correlated carbon nanotubes
Crossover from Fabry-Pérot to charging oscillations in correlated carbon nanotubes Open
We report on electron transport measurements in high-quality carbon nanotube devices with a total transmission of about 1/2. At liquid helium temperature the linear conductance oscillates with moderate amplitude as a function of the gate v…
View article: Mass Sensing for the Advanced Fabrication of Nanomechanical Resonators
Mass Sensing for the Advanced Fabrication of Nanomechanical Resonators Open
We report on a nanomechanical engineering method to monitor matter growth in real time via e-beam electromechanical coupling. This method relies on the exceptional mass sensing capabilities of nanomechanical resonators. Focused electron be…
View article: Electrical Control of Lifetime-Limited Quantum Emitters Using 2D Materials
Electrical Control of Lifetime-Limited Quantum Emitters Using 2D Materials Open
Solid-state quantum emitters are a mainstay of quantum nanophotonics as integrated single-photon sources (SPS) and optical nanoprobes. Integrating such emitters with active nanophotonic elements is desirable in order to attain efficient co…
View article: Layering Transition in Superfluid Helium Adsorbed on a Carbon Nanotube Mechanical Resonator
Layering Transition in Superfluid Helium Adsorbed on a Carbon Nanotube Mechanical Resonator Open
Helium is recognized as a model system for the study of phase transitions. Of particular interest is the superfluid phase in two dimensions. We report measurements on superfluid helium films adsorbed on the surface of a suspended carbon na…
View article: Optomechanical Measurement of Thermal Transport in Two-Dimensional MoSe<sub>2</sub> Lattices
Optomechanical Measurement of Thermal Transport in Two-Dimensional MoSe<sub>2</sub> Lattices Open
Nanomechanical resonators have emerged as sensors with exceptional sensitivities. These sensing capabilities open new possibilities in the studies of the thermodynamic properties in condensed matter. Here, we use mechanical sensing as a no…
View article: Cooling and Self-Oscillation in a Nanotube Electro-Mechanical Resonator
Cooling and Self-Oscillation in a Nanotube Electro-Mechanical Resonator Open
Nanomechanical resonators are used with great success to couple mechanical motion to other degrees of freedom, such as photons, spins, and electrons. Mechanical vibrations can be efficiently cooled and amplified using photons, but not with…
View article: Electrostatically Induced Phononic Crystal
Electrostatically Induced Phononic Crystal Open
The possibility of realizing an electrostatically induced phononic crystal is\ninvestigated numerically in an acoustic waveguide based on a graphene sheet\nthat is suspended over periodically arrayed electrodes. The application of dc\nvolt…
View article: Landau Velocity for Collective Quantum Hall Breakdown in Bilayer Graphene
Landau Velocity for Collective Quantum Hall Breakdown in Bilayer Graphene Open
Breakdown of the quantum Hall effect (QHE) is commonly associated with an electric field approaching the inter-Landau-level (LL) Zener field, the ratio of the Landau gap and the cyclotron radius. Eluded in semiconducting heterostructures, …
View article: Improving the read-out of the resonance frequency of nanotube mechanical resonators
Improving the read-out of the resonance frequency of nanotube mechanical resonators Open
We report on an electrical detection method of ultrasensitive carbon nanotube mechanical resonators. The noise floor of the detection method is reduced using a RLC resonator and an amplifier based on a high electron mobility transistor coo…
View article: Ultrasensitive Displacement Noise Measurement of Carbon Nanotube Mechanical Resonators
Ultrasensitive Displacement Noise Measurement of Carbon Nanotube Mechanical Resonators Open
Mechanical resonators based on a single carbon nanotube are exceptional sensors of mass and force. The force sensitivity in these ultralight resonators is often limited by the noise in the detection of the vibrations. Here, we report on an…