Concept

Pulse tube refrigerator

Publications associées (18)

Mechanically induced correlated errors on superconducting qubits with relaxation times exceeding 0.4 ms

Tobias Kippenberg, Amir Youssefi, Marco Scigliuzzo, Mahdi Chegnizadeh, Shingo Kono, Xuxin Wang

Superconducting qubits are among the most advanced candidates for achieving fault-tolerant quantum computing. Despite recent significant advancements in the qubit lifetimes, the origin of the loss mechanism for state-of-the-art qubits is still subject to i ...

Nature Portfolio2024

Scanning SQUID microscopy in a cryogen-free dilution refrigerator

Philip Johannes Walter Moll, Maja Deborah Bachmann

We report a scanning superconducting quantum interference device (SQUID) microscope in a cryogen-free dilution refrigerator with a base temperature at the sample stage of at least 30 mK. The microscope is rigidly mounted to the mixing chamber plate to opti ...

2021

Dark matter, dark photon and superfluid He-4 from effective field theory

Angelo Esposito, Emma Michèle Ginette Geoffray

We consider a model of sub-GeV dark matter whose interaction with the Standard Model is mediated by a new vector boson (the dark photon) which couples kinetically to the photon. We describe the possibility of constraining such a model using a superfluid He ...

ELSEVIER2020

Construction of a low temperature STM and studies of large molecular systems

Daniel Pablo Rosenblatt

Several aspects in the field of molecular self assembly are addressed in this thesis. Thanks to the scanning tunnelling microscope (STM), structural, electronic and magnetic properties on surfaces can be studied down to the size of a single atom. In this t ...

EPFL2016

SHPM imaging of LiHoF4 at ultra low temperatures

In the first part of this thesis we describe the functioning principle of the scanning hall probe microscope (SHPM), and we present a summary of the theoretical and experimental knowledge on the dipolar-coupled Ising ferromagnet LiHoF4. In the second chapt ...

2014

SHPM imaging of LiHoF4 at ultra low temperatures

2014

An ultra-low temperature scanning Hall probe microscope for magnetic imaging below 40 mK

Henrik Moodysson Rønnow, Julian Piatek

We describe the design of a low temperature scanning Hall probe microscope (SHPM) for a dilution refrigerator system. A detachable SHPM head with 25.4 mm OD and 200 mm length is integrated at the end of the mixing chamber base plate of the dilution refrige ...

American Institute of Physics2014

A 10 mK scanning tunneling microscope operating in ultra high vacuum and high magnetic fields

Klaus Kern, Markus Etzkorn, Maximilian Assig

We present design and performance of a scanning tunneling microscope (STM) that operates at temperatures down to 10 mK providing ultimate energy resolution on the atomic scale. The STM is attached to a dilution refrigerator with direct access to an ultra h ...

Amer Inst Physics2013

Evanescent straight tapered-fiber coupling of ultra-high Q optomechanical micro-resonators in a low-vibration helium-4 exchange-gas cryostat

Tobias Kippenberg, Albert Schliesser

We developed an apparatus to couple a 50-mu m diameter whispering-gallery silica microtoroidal resonator in a helium-4 cryostat using a straight optical tapered-fiber at 1550 nm wavelength. On a top-loading probe specifically adapted for increased mechanic ...

Amer Inst Physics2013

Dynamical photothermal response of optical whispering-gallery silica microresonators in helium-4 cryogenic environments

Tobias Kippenberg, Xiaoqing Zhou, Albert Schliesser

We present optical measurements of the photothermal response of a whispering-gallery silica microresonator in a helium-4 exchange gas cryostat. Using transient-mode numerical simulations, we discuss the various heat propagation mechanisms. (C) 2011 Optical ...

Ieee2012

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