RDC-8 Coordinators (Kathiwada and Suzuki) will give overview of the coordination activities
We report R&D progress, as well as the first axion-like particle search results with BREAD - a novel dish antenna for broadband ~$\mu$eV-eV wave-dark matter detection, which allows to utilize state-of-the-art high-field solenoidal magnets. Axions are converted non-resonantly to photons on a cylindrical metallic wall parallel to an external magnetic field. These photons are then focused using a...
Axions are a well-motivated dark matter candidate for solving the strong CP problem at the same time. Axion haloscope makes use of the conversion of axions to photons in a large magnetic field. To increase signal strength, many haloscopes make use of resonant enhancement and high gain amplifiers, while also taking measures to keep receiver noise as low as possible such as the use of dilution...
RDC-8 AMP,INT,NMR,OptMech subgroup overview
Photon detection at radio frequencies (RF) plays an essential role in high-energy physics such as dark matter search. The detection of weak signal converted from dark matter in the presence of excess quantum and classical noise can be achieved by exploiting high-quality superconducting RF cavities in the presence of strong magnetic field. However, this is a nontrivial detection problem due to...
We describe the proposed Quantum Invisible Particle Sensor (QuIPS) experiment, an optomechanical laser trap surrounded by active pixel detectors, that would allow for searching for heavy sterile neutrino masses in the 100s of keV to few MeV regime via weak nuclear decays. The experimental setup uses CMOS sensors to measure the direction of a beta particle emitted from a trapped nanosphere, and...
We present the latest developments of the Fermilab and the Advanced Quantum Networks experiments. These operating quantum networks, with deployed infrastructure spanning the Chicagoland metropolitan and beyond which include nodes at Fermilab, Northwestern University, The University of Illinois at Urbana-Champaign, Caltech, the Jet Propulsion Laboratory, and Argonne National Labs. The deployed...
Quantum random walk processes have many intriguing applications in high energy physics including the simulation of parton shower evolution. We will present the design and initial results of a fiber loop time-bin quantum walk architecture using the hardware platform already in operation at the Fermilab Quantum Network in which the state of the photon is defined by its time-of-arrival. The fiber...
Recent experimental probes have demonstrated that ambient high-energy radiation can produce phonon-mediated quasiparticle poisoning in superconducting qubit arrays, leading to spatiotemporally correlated errors. This has garnered interest in understanding the potential sensitivity of such arrays to small in-substrate energy depositions characteristic of low-mass, sub-GeV dark matter scatters....
Understanding phonon kinematics and charge propagation in superconducting devices is crucial for minimizing correlated errors in superconducting qubits and conducting low-threshold dark matter searches. For nearly a decade, the Geant4 Condensed Matter Physics (G4CMP) package, has been limited to simulating charge and phonon transport in silicon and germanium materials. In this work, we have...
RDC-8 Pair breaking sensor subgroup overview
The search for dark matter has broadened to focus on a much wider class of candidates than in previous decades, including particle-like dark matter at the MeV-GeV mass scale. Lighter than traditional WIMPs, these particles deposit less energy in nuclear or electronic interactions; thus, discovering them will require low energy thresholds and cryogenic temperatures. In this talk, I will...
HeRALD (Helium Roton Apparatus for Light Dark Matter) searches for sub-GeV dark matter-nucleon scattering in a $^4$He target. Phonons from an atomic recoil trigger the evaporation of $^4$He atoms into the vacuum, which are then detected calorimetrically using a Transition Edge Sensor (TES) array. Here I will discuss recent R&D using a two-channel evaporation sensor. The multi-channel readout...
Phonon-sensitive Microwave Kinetic Inductance Detectors (MKIDs) are scalable superconducting sensors enabling the next-generation low-mass dark matter direct search and neutrinoless double beta decay search. We have identified Hafnium (Hf) as a promising material to fabricate high-sensitivity MKID and developed the microfabrication process for low-Tc (140mK~200mK) resonators. Furthermore,...
Line Intensity Mapping (LIM) is an emerging cosmological survey technique that measures the integrated emission of certain atomic and molecular lines with high throughput and low spatial and spectral resolution to quickly map large volumes of the large scale structure distribution in our universe. Mm-wave LIM would measure the redshifted emission from CO/[CII] using established survey...
One of the challenges in exploring promising novel materials for dark matter searches is the detection of sub-eV energy excitations from light-dark matter interaction with a target material. Dark matter interaction can excite sub-eV optical phonon modes in polar materials like sapphire. We plan to utilize superconducting qubits on a sapphire substrate to study their response to energy...
QCDs, which are based on a charge qubit design, are the most sensitive far-infrared detectors in 1.5 THz regime. Apart from their current application in space telescopes for infrared spectroscopy, they have single-photon sensitivity that can be utilized to look for ultralight Dark Matter at the meV scale. This talk will give an overview of our work to characterize a QCD detector using a Black...
SQUATs are new quantum sensor using a qubit directly coupled to a feedline that are designed to detect THz photons or meV phonons. Incoming particles deposit energy in the qubit islands, generating quasiparticles, which can be detected as they tunnel across the qubit junction as a shift in the qubit parity state. These devices have several features which are especially beneficial for dark...
We will present the latest results in scaling superconducting nanowire single photon detectors (SNSPDs) to large-format cameras, with as many as 400,000 pixels. We will discuss the future prospects for scaling these proof-of-concept results into practical cameras for time-resolved imaging in HEP applications, and discuss new concepts for using large-format SNSPD arrays for 4D tracking.
We present the progress towards a first stage dark photon BREAD (Broadband Reflector Experiment for Axion Detection) pilot experiment with a focus on SNSPDs. The BREAD experiment searches for axions and wave-like dark matter using a novel dish resonator which allows us to utilize state-of-the-art high-field solenoidal magnets. The axion target mass extends from ~𝜇eV to eV, this large mass...
We present the first detailed study of an 8-channel $2\times2$~mm$^{2}$ WSi superconducting microwire single photon detectors (SMSPD) array exposed to 120~GeV proton beam and 8~GeV electron and pion beam at the Fermilab Test Beam Facility. Recent advancement in the fabrication of large area SMSPDs make them an ideal sensors for dark matter detection and future accelerator-based experiments....
Superconducting nanowire single photon detectors (SNSPD) are ultra sensitive low noise detectors sensitive to single photons. By optimizing the material content of the superconducting thin film, it is possible to reduce the energy detection threshold far into the infrared. Such low threshold detectors are ideally suited for low mass dark matter and axion detection experiments such as the BREAD...
We will present the latest test results of SNSPDs as particle sensors. The characteristics of SNSPDs as fast, highly efficient, and precise in time and position make them a potential detector technology meeting the requirements of accelerator-based experiments such as those at Jefferson Lab and the Electron-Ion Collider. We will discuss the R&D program to demonstrate the viability of...
