209 citations · 725 across the 20 of their papers we have counts for
20 papers
Quantum metrology of low frequency electromagnetic modes with frequency upconverters
Stephen E. Kuenstner, Elizabeth C. van Assendelft, Saptarshi Chaudhuri +11
We present the RF Quantum Upconverter (RQU) and describe its application to quantum metrology of electromagnetic modes between dc and the Very High Frequency band (VHF) (…
New Horizons: Scalar and Vector Ultralight Dark Matter
D. Antypas, A. Banerjee, C. Bartram +123
The last decade has seen unprecedented effort in dark matter model building at all mass scales coupled with the design of numerous new detection strategies. Transformative advances…
Impedance Matching to Axion Dark Matter: Considerations of the Photon-Electron Interaction
Saptarshi Chaudhuri
We introduce the concept of impedance matching to axion dark matter by posing the question of why axion detection is difficult, even though there is enough power in each square met…
An Impedance-Modulated Code-Division Microwave SQUID Multiplexer
C. Yu, A. Ames, S. Chaudhuri +5
Large arrays of cryogenic detectors, including transition-edge sensors (TESs) or magnetic micro-calorimeters (MMCs), are needed for future experiments across a wide range of applic…
Microwave multiplexing on the Keck Array
Ari Cukierman, Zeeshan Ahmed, Shawn Henderson +82
We describe an on-sky demonstration of a microwave-multiplexing readout system in one of the receivers of the Keck Array, a polarimetry experiment observing the cosmic microwave ba…
Exclusion Limits on Hidden-Photon Dark Matter near 2 neV from a Fixed-Frequency Superconducting Lumped-Element Resonator
A. Phipps, S. E. Kuenstner, S. Chaudhuri +10
We present the design and performance of a simple fixed-frequency superconducting lumped-element resonator developed for axion and hidden photon dark matter detection. A rectangula…
Optimal Electromagnetic Searches for Axion and Hidden-Photon Dark Matter
Saptarshi Chaudhuri, Kent D. Irwin, Peter W. Graham +1
Direct-detection searches for axions and hidden photons are playing an increasingly prominent role in the search for dark matter. In this work, we derive the properties of optimal…
Highly-multiplexed microwave SQUID readout using the SLAC Microresonator Radio Frequency (SMuRF) Electronics for Future CMB and Sub-millimeter Surveys
Shawn W. Henderson, Zeeshan Ahmed, Jason Austermann +29
The next generation of cryogenic CMB and submillimeter cameras under development require densely instrumented sensor arrays to meet their science goals. The readout of large number…
A Spread-Spectrum SQUID Multiplexer
K. D. Irwin, S. Chaudhuri, H. -M. Cho +5
The Transition-Edge Sensors (TES) is a mature, high-resolution x-ray spectrometer technology that provides a much higher efficiency than dispersive spectrometers such as gratings a…
SLAC Microresonator Radio Frequency (SMuRF) Electronics for Read Out of Frequency-Division-Multiplexed Cryogenic Sensors
S. A. Kernasovskiy, S. E. Kuenstner, E. Karpel +20
Large arrays of cryogenic sensors for various imaging applications ranging across x-ray, gamma-ray, Cosmic Microwave Background (CMB), mm/sub-mm, as well as particle detection incr…
Optimal Impedance Matching and Quantum Limits of Electromagnetic Axion and Hidden-Photon Dark Matter Searches
Saptarshi Chaudhuri, Kent Irwin, Peter W. Graham +1
For the first time, we determine the properties of the optimal single-moded, linear, passive search for electromagnetic coupling to axion and hidden-photon dark matter, subject to…
Broadband parametric amplifiers based on nonlinear kinetic inductance artificial transmission lines
Saptarshi Chaudhuri, Dale Li, Kent Irwin +5
We present broadband parametric amplifiers based on the kinetic inductance of superconducting NbTiN thin films in an artificial (lumped-element) transmission line architecture. We…
Design Overview of the DM Radio Pathfinder Experiment
Maximiliano Silva-Feaver, Saptarshi Chaudhuri, Hsiao-Mei Cho +12
We introduce the DM Radio, a dual search for axion and hidden photon dark matter using a tunable superconducting lumped-element resonator. We discuss the prototype DM Radio Pathfin…
Dark Sectors 2016 Workshop: Community Report
Jim Alexander, Marco Battaglieri, Bertrand Echenard +201
This report, based on the Dark Sectors workshop at SLAC in April 2016, summarizes the scientific importance of searches for dark sector dark matter and forces at masses beneath the…
Readout of two-kilopixel transition-edge sensor arrays for Advanced ACTPol
Shawn W. Henderson, Jason R. Stevens, Mandana Amiri +30
Advanced ACTPol is an instrument upgrade for the six-meter Atacama Cosmology Telescope (ACT) designed to measure the cosmic microwave background (CMB) temperature and polarization…
Frequency-tunable Superconducting Resonators via Nonlinear Kinetic Inductance
Michael R. Vissers, Johannes Hubmayr, Martin Sandberg +3
We have designed, fabricated and tested a frequency-tunable high-Q superconducting resonator made from a niobium titanium nitride film. The frequency tunability is achieved by inje…
Traveling wave parametric amplifier with Josephson junctions using minimal resonator phase matching
T. C. White, J. Y. Mutus, I. -C. Hoi +18
Josephson parametric amplifiers have become a critical tool in superconducting device physics due to their high gain and quantum-limited noise. Traveling wave parametric amplifiers…
Simulation and Analysis of Superconducting Traveling-Wave Parametric Amplifiers
Saptarshi Chaudhuri, Jiansong Gao, Kent Irwin
Superconducting parametric amplifiers have great promise for quantum-limited readout of superconducting qubits and detectors. Until recently, most superconducting parametric amplif…
A Radio for Hidden-Photon Dark Matter Detection
Saptarshi Chaudhuri, Peter W. Graham, Kent Irwin +3
We propose a resonant electromagnetic detector to search for hidden-photon dark matter over an extensive range of masses. Hidden-photon dark matter can be described as a weakly cou…
Comment on "Parametric amplification in Josephson junction embedded transmission lines"
Saptarshi Chaudhuri, Jiansong Gao
Recently Yaakobi and co-workers [Phys. Rev. B 87, 144301 (2013)] theoretically studied four-wave mixing and parametric amplification in a nonlinear transmission line consisting of…