Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Ghosh, Sumita"'
Autor:
Graham, Eleanor, Ghosh, Sumita, Zhu, Yuqi, Bai, Xiran, Cahn, Sidney B., Durcan, Elsa, Jewell, Michael J., Speller, Danielle H., Zacarias, Sabrina M., Zhou, Laura T., Maruyama, Reina H.
We propose a Rydberg-atom-based single-photon detector for signal readout in dark matter haloscope experiments between 40 ${\mu}$eV and 200 ${\mu}$eV (10 GHz and 50 GHz). At these frequencies, standard haloscope readout using linear amplifiers is lim
Externí odkaz:
http://arxiv.org/abs/2310.15352
Autor:
HAYSTAC Collaboration, Jewell, M. J., Leder, A. F., Backes, K. M., Bai, Xiran, van Bibber, K., Brubaker, B. M., Cahn, S. B., Droster, A., Esmat, Maryam H., Ghosh, Sumita, Graham, Eleanor, Hilton, Gene C., Jackson, H., Laffan, Claire, Lamoreaux, S. K., Lehnert, K. W., Lewis, S. M., Malnou, M., Maruyama, R. H., Palken, D. A., Rapidis, N. M., Ruddy, E. P., Simanovskaia, M., Singh, Sukhman, Speller, D. H., Vale, Leila R., Wang, H., Zhu, Yuqi
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 the design and operation of the experiment
Externí odkaz:
http://arxiv.org/abs/2301.09721
Autor:
Zhu, Yuqi, Jewell, M. J., Laffan, Claire, Bai, Xiran, Ghosh, Sumita, Graham, Eleanor, Cahn, S. B., Maruyama, Reina H., Lamoreaux, S. K.
Publikováno v:
Rev. Sci. Instrum. 94, 054712 (2023)
Microwave cavity haloscopes are among the most sensitive direct detection experiments searching for dark matter axions via their coupling to photons. When the power of the expected microwave signal due to axion-photon conversion is on the order of $1
Externí odkaz:
http://arxiv.org/abs/2212.00732
Publikováno v:
Physical Review A 105, 042808 (2022)
We present a study of the Rydberg spectrum in $^{39}K$ for $nS$ and $nD_{3/2}$ series connected to $5^2P_{1/2}$ using two-photon spectroscopy based on EIT in a heated vapor cell. We observed some 80 transitions from $5P_{1/2}$ to Rydberg states with
Externí odkaz:
http://arxiv.org/abs/2112.04614
Publikováno v:
Phys. Rev. D 104, 092016; Published 30 November 2021
The dark (or hidden) photon is a massive U(1) gauge boson theorized as a dark force mediator and as a dark matter candidate. Dark photons can be detected with axion cavity haloscopes by probing for a power excess caused by the dark photon's kinetic m
Externí odkaz:
http://arxiv.org/abs/2104.09334
Autor:
Afek, Gadi, Monteiro, Fernando, Wang, Jiaxiang, Siegel, Benjamin, Ghosh, Sumita, Moore, David C.
Publikováno v:
Phys. Rev. D 104, 012004 (2021)
Millicharged particles (mCPs) are hypothesized particles possessing an electric charge that is a fraction of the charge of the electron. We report a search for mCPs with charges $\gtrsim 10^{-4}~e$ that improves sensitivity to their abundance in matt
Externí odkaz:
http://arxiv.org/abs/2012.08169
Autor:
Backes, K. M., Palken, D. A., Kenany, S. Al, Brubaker, B. M., Cahn, S. B., Droster, A., Hilton, Gene C., Ghosh, Sumita, Jackson, H., Lamoreaux, S. K., Leder, A. F., Lehnert, K. W., Lewis, S. M., Malnou, M., Maruyama, R. H., Rapidis, N. M., Simanovskaia, M., Singh, Sukhman, Speller, D. H., Urdinaran, I., Vale, Leila R., van Assendelft, E. C., van Bibber, K., Wang, H.
In dark matter axion searches, quantum uncertainty manifests as a fundamental noise source, limiting the measurement of the quadrature observables used for detection. We use vacuum squeezing to circumvent the quantum limit in a search for a new parti
Externí odkaz:
http://arxiv.org/abs/2008.01853
Publikováno v:
Phys. Rev. A 97, 051802 (2018)
A circularly polarized laser beam is used to levitate and control the rotation of microspheres in high vacuum. At low pressure, rotation frequencies as high as 6 MHz are observed for birefringent vaterite spheres, limited by centrifugal stresses. Due
Externí odkaz:
http://arxiv.org/abs/1803.04297
Publikováno v:
Phys. Rev. A 96, 063841 (2017)
We demonstrate optical levitation of SiO$_2$ spheres with masses ranging from 0.1 to 30 nanograms. In high vacuum, we observe that the measured acceleration sensitivity improves for larger masses and obtain a sensitivity of $0.4 \times 10^{-6}\ g/\sq
Externí odkaz:
http://arxiv.org/abs/1711.04675
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