21 citations · 35 across the 8 of their papers we have counts for
10 papers
Enhanced Mid-Infrared Single-Photon Detection with Antenna-Coupled Superconducting Nanowires
Dip Joti Paul, Stewart Koppell, Gregor G. Taylor +7
Scaling the photon-detection area of superconducting nanowire single-photon detectors (SNSPDs) has traditionally been achieved by nanowire meandering. However, material inhomogenei…
Dark Matter Haloscope with a Disordered Dielectric Absorber
Stewart Koppell, Otavio D. A. R. Bittencourt, Dip Joti Paul +3
Light dark matter candidates such as axions and dark photons generically couple to electromagnetism, yielding dark-matter-to-photon conversion as a key search strategy. In addition…
Analysis and Applications of a Heralded Electron Source
Stewart A. Koppell, John W. Simonaitis, Maurice A. R. Krielaart +3
We analytically describe the noise properties of a heralded electron source made from a standard electron gun, a weak photonic coupler, a single photon counter, and an electron ene…
Photon counting from the vacuum ultraviolet to the short wavelength infrared using semiconductor and superconducting technologies
Jonathan Asaadi, Dan Baxter, Karl K. Berggren +27
In the last decade, several photon counting technologies have been developed opening a new window for experiments in the low photon number regime. Several ongoing and future projec…
Optimal Dose-Limited Phase Estimation without Entanglement
Stewart A. Koppell, Mark A. Kasevich
Phase estimation is one of the most important facets of quantum metrology, with applications in sensing, microscopy, and quantum computation. When estimating a phase shift in a los…
Transmission Electron Microscopy at the Quantum Limit
Stewart A. Koppell, Yonatan Israel, Adam J. Bowman +2
A number of visions for a new generation of dose-efficient electron microscopes have been advanced. These proposals, while inspired by quantum principles, make little contact with…
RF pulse shaping for gated electron mirrors
Brannon B. Klopfer, Stewart A. Koppell, Adam J. Bowman +2
We present the design and prototype of a switchable electron mirror, along with a technique for driving it with a flat-top pulse. We employ a general technique for electronic pulse…
Information Transfer as a Framework for Optimized Phase Imaging
Stewart Koppell, Mark Kasevich
In order to efficiently image a non-absorbing sample (a phase object), dedicated phase contrast optics are required. Typically, these optics are designed with the assumption that t…
Design for a 10 KeV Multi-Pass Transmission Electron Microscope
Stewart A. Koppell, Marian Mankos, Adam J. Bowman +4
Multi-pass transmission electron microscopy (MPTEM) has been proposed as a way to reduce damage to radiation-sensitive materials. For the field of cryo-electron microscopy (cryo-EM…
Multi-pass transmission electron microscopy
Thomas Juffmann, Stewart A. Koppell, Brannon B. Klopfer +3
Feynman once asked physicists to build better electron microscopes to be able to watch biology at work. While electron microscopes can now provide atomic resolution, electron beam…