A5039956279- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Quantum Information and Cryptography
- Mechanical and Optical Resonators
- Cosmology and Gravitation Theories
- Photonic and Optical Devices
- Computational Physics and Python Applications
- Atomic and Subatomic Physics Research
- Semiconductor Lasers and Optical Devices
- Quantum and electron transport phenomena
- Quantum Chromodynamics and Particle Interactions
- Advanced Combinatorial Mathematics
- Advanced Materials Characterization Techniques
- Advanced Topics in Algebra
- Advanced Surface Polishing Techniques
- Molecular spectroscopy and chirality
- Quantum Computing Algorithms and Architecture
- Quantum Mechanics and Applications
- Advanced Fiber Laser Technologies
- Crystal structures of chemical compounds
- Crystallography and molecular interactions
- Force Microscopy Techniques and Applications
- Advanced Measurement and Metrology Techniques
- Advanced Algebra and Geometry
- Superconducting Materials and Applications
Joint Institute for Laboratory Astrophysics
2018-2024
University of Colorado Boulder
2019-2024
National Institute of Standards and Technology
2019-2023
Yale University
2014-2020
Fermi National Accelerator Laboratory
2017
University of Chicago
2017
We report on the first results from a new microwave cavity search for dark matter axions with masses above $20~\mu\text{eV}$. exclude axion models two-photon coupling $g_{a\gamma\gamma} \gtrsim 2\times10^{-14}~\text{GeV}^{-1}$ over range $23.55~\mu\text{eV} < m_a 24.0~\mu\text{eV}$. These represent two important achievements. First, we have reached cosmologically relevant sensitivity an order of magnitude higher in mass than any existing limits. Second, by incorporating dilution refrigerator...
We report on the results from a search for dark matter axions with HAYSTAC experiment using microwave cavity detector at frequencies between 5.6-5.8$\, \rm Ghz$. exclude axion models two photon coupling $g_{a\gamma\gamma}\,\gtrsim\,2\times10^{-14}\,\rm GeV^{-1}$, factor of 2.7 above benchmark KSVZ model over mass range 23.15$\,<\,$$m_a \,$<$\,$24.0$\,\mu\rm eV$. This doubles reported in our previous paper. achieve near-quantum-limited sensitivity by operating temperature $T<h\nu/2k_B$ and...
A search for dark matter axions with masses $>10\text{ }\text{ }\mathrm{\ensuremath{\mu}}\mathrm{eV}/{\mathrm{c}}^{2}$ has been performed using the HAYSTAC experiment's squeezed state receiver to achieve subquantum limited noise. This work includes details of design and operation experiment previously used in mass ranges 16.96--17.12 $17.14--17.28\text{ (4.100--4.140 GHz 4.145--4.178 GHz) as well upgrades facilitate an extended at higher masses. These include improvements data acquisition...
We describe in detail the analysis procedure used to derive first limits from Haloscope at Yale Sensitive Axion CDM (HAYSTAC), a microwave cavity search for cold dark matter (CDM) axions with masses above $20\text{ }\text{ }\ensuremath{\mu}\mathrm{eV}$. have introduced several significant innovations axion pioneered by Dark Matter eXperiment (ADMX), including optimal filtering of individual power spectra that constitute data set and consistent maximum likelihood combining rebinning these...
Numerous astrophysical and cosmological observations are best explained by the existence of dark matter, a mass density which interacts only very weakly with visible, baryonic matter. Searching for extremely weak signals produced this matter strongly motivate development new, ultra-sensitive detector technologies. Paradigmatic advances in control readout massive mechanical systems, both classical quantum regimes, have enabled unprecedented levels sensitivity. In white paper, we outline...
Many experiments that interrogate fundamental theories require detectors whose sensitivities are limited by the laws of quantum mechanics. In cavity-based searches for axionic dark matter, vacuum fluctuations in two quadratures cavity electromagnetic field limit sensitivity to an axion-induced field. apparatus designed partially mimic existing axion detectors, we demonstrate experimentally such limits can be overcome through use squeezed states. By preparing a microwave state and measuring...
We use our recent electric dipole moment (EDM) measurement data to constrain the possibility that ${\mathrm{HfF}}^{+}$ EDM oscillates in time due interactions with candidate dark matter axionlike particles (ALPs). employ a Bayesian analysis method which accounts for both look-elsewhere effect and uncertainties associated stochastic density fluctuations ALP field. find no evidence of an oscillating over range spanning from 27 nHz 400 mHz, we this result ALP-gluon coupling mass...
The demonstration of a quantum link between microwave and optical frequencies would be an important step toward the realization network superconducting processors. A major impediment to electro-optic transduction in all platforms explored date is noise added by thermal occupation modes involved process, it has proved difficult realize low occupancy concurrently with other desirable features like high duty cycle efficiency. In this work, we present efficient continuously operating...
The axion is a light pseudoscalar particle which suppresses CP-violating effects in strong interactions and also happens to be an excellent dark matter candidate. Axions constituting the halo of our galaxy may detected by their resonant conversion photons microwave cavity permeated magnetic field. current generation experiment has demonstrated sensitivity plausible models, upgrades progress should achieve required for definitive search, at least low mass axions. However, comprehensive...
In cavity-based axion dark matter detectors, quantum noise remains a primary barrier to achieving the scan rate necessary for comprehensive search of parameter space. Here, we introduce method enhancement in which an axion-sensitive cavity is coupled auxiliary resonant circuit through simultaneous two-mode squeezing (entangling) and state-swapping interactions. We show analytically that when combined, these interactions can amplify signal before it becomes polluted by vacuum introduced...
In experiments searching for axionic dark matter, the use of standard threshold-based data analysis discards valuable information. We present a Bayesian framework that builds on an existing processing protocol [B. M. Brubaker, L. Zhong, S. K. Lamoreaux, W. Lehnert, and A. van Bibber, Phys. Rev. D 96, 123008 (2017)] to extract more information from coherent axion detectors such as operating haloscopes. The avoids logical subtleties accompany enables greater experimental flexibility future...
The axion is a well-motivated cold dark matter (CDM) candidate first postulated to explain the absence of $CP$ violation in strong interactions. CDM axions may be detected via their resonant conversion into photons "haloscope" detector: tunable high-$Q$ microwave cavity maintained at cryogenic temperature, immersed magnetic field, and coupled low-noise receiver. This dissertation reports on design, commissioning, operation Haloscope Yale Sensitive Axion (HAYSTAC), new detector designed...
We searched for the $CP$-violating rare decay of neutral kaon, $K_{L} \to π^0 ν\overlineν$, in data from first 100 hours physics running 2013 J-PARC KOTO experiment. One candidate event was observed while $0.34\pm0.16$ background events were expected. set an upper limit $5.1\times10^{-8}$ branching fraction at 90\% confidence level (C.L.). An $3.7\times10^{-8}$ C.L. π^{0} X^{0}$decay also time, where $X^{0}$ is invisible particle with a mass 135 MeV/$c^{2}$.
A transducer capable of faithfully converting single quanta between microwave and optical frequencies would enable an network superconducting quantum computers. primary challenge in the ongoing effort to bridge these frequency scales is detrimental effect that photons have on circuits. This manuscript details membrane-optomechanical Fabry-P´erot architecture we employ a high-efficiency electrooptomechanical transducer. We use chemical bonding process create integrated membrane-mirror etalon...
A search for dark matter axions with masses $>10 \mu eV/c^{2}$ has been performed using the HAYSTAC experiment's squeezed state receiver to achieve sub-quantum limited noise. This report includes details of design and operation experiment previously used in mass ranges $16.96-17.12$ $17.14-17.28 eV/c^{2}$($4.100-4.140$GHz) $4.145-4.178$GHz) as well upgrades facilitate an extended at higher masses. These include improvements data acquisition routine which have reduced effective dead time by a...
In cavity-based axion dark matter detectors, quantum noise remains a primary barrier to achieving the scan rate necessary for comprehensive search of parameter space. Here we introduce method enhancement in which an axion-sensitive cavity is coupled auxiliary resonant circuit through simultaneous two-mode squeezing (entangling) and state swapping interactions. We show analytically that when combined, these interactions can amplify signal before it becomes polluted by vacuum introduced...