Generalized geometric speed limits for quantum observables

Autor: Bringewatt, Jacob, Steffen, Zach, Ritter, Martin A., Ehrenberg, Adam, Wang, Haozhi, Palmer, B. S., Kollár, Alicia J., Gorshkov, Alexey V., García-Pintos, Luis Pedro

Leveraging quantum information geometry, we derive generalized quantum speed limits on the rate of change of the expectation values of observables. These bounds subsume and, for Hilbert space dimension $\geq 3$, tighten existing bounds -- in some cas

Externí odkaz: http://arxiv.org/abs/2409.04544

Impact of etches on thin-film single-crystal niobium resonators

Autor: Wang, H., Banerjee, T., Farinha, T. G., Hanbicki, A. T., Fatemi, V., Palmer, B. S., Richardson, C. J. K.

A single crystal niobium thin film was grown using molecular beam epitaxy on a c-plane sapphire wafer. Several samples were fabricated into dc resistivity test devices and coplanar waveguide resonator chips using the same microfabrication procedures

Externí odkaz: http://arxiv.org/abs/2402.18051

Characterization of a SiPM-based monolithic neutron scatter camera using dark counts

Autor: Balajthy, J., Brown, J., Brubaker, E., Cabrera-Palmer, B., Cates, J., Goldblum, B. L., Folsom, M., Hausladen, P., Keefe, K., Nattress, J., Negut, V., Nishimura, K., Steele, J., Ziock, K.

We report on the design and characterization of a prototype monolithic neutron scatter camera that is intended to significantly improve upon the geometrical shortcomings of conventional neutron cameras. The detector consists of a 50 mm $\times$ 56 mm

Externí odkaz: http://arxiv.org/abs/2309.15280

Measurement of the Electron-Neutrino Charged-Current Cross Sections on ${}^{127}$I with the COHERENT NaI$\nu$E detector

Autor: An, P., Awe, C., Barbeau, P. S., Becker, B., Belov, V., Bernardi, I., Bock, C., Bolozdynya, A., Bouabid, R., Brown, A., Browning, J., Cabrera-Palmer, B., Cervantes, M., Conley, E., Daughhetee, J., Detwiler, J., Ding, K., Durand, M. R., Efremenko, Y., Elliott, S. R., Fabris, L., Febbraro, M., Rosso, A. Gallo, Galindo-Uribarri, A., Germer, A. C., Green, M. P., Hakenmüller, J., Heath, M. R., Hedges, S., Hughes, M., Johnson, B. A., Johnson, T., Khromov, A., Konovalov, A., Kozlova, E., Kumpan, A., Kyzylova, O., Li, L., Link, J. M., Liu, J., Mahoney, M., Major, A., Mann, K., Markoff, D. M., Mastroberti, J., Mattingly, J., Mueller, P. E., Newby, J., Parno, D. S., Penttila, S. I., Pershey, D., Prior, C. G., Rapp, R., Ray, H., Raybern, J., Razuvaeva, O., Reyna, D., Rich, G. C., Ross, J., Rudik, D., Runge, J., Salvat, D. J., Sander, J., Scholberg, K., Shakirov, A., Simakov, G., Sinev, G., Skuse, C., Snow, W. M., Sosnovtsev, V., Subedi, T., Suh, B., Tayloe, R., Tellez-Giron-Flores, K., Tsai, Y. -T., Ujah, E., Vanderwerp, J., van Nieuwenhuizen, E. E., Varner, R. L., Virtue, C. J., Visser, G., Walkup, K., Ward, E. M., Wongjirad, T., Yoo, J., Yu, C. -H., Zawada, A., Zettlemoyer, J., Zderic, A.

Publikováno v: Phys. Rev. Lett. 131, 221801 (2023)

Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on ${}^{127}$I with pion decay-at-rest neutrinos produced by the Spallation Neutron Source at Oak Ridge National Laboratory. Iodine is

Externí odkaz: http://arxiv.org/abs/2305.19594

Characterization of Asymmetric Gap-Engineered Josephson Junctions and 3D Transmon Qubits

Autor: Steffen, Zach, Dutta, S. K., Wang, Haozhi, Li, Kungang, Huang, Yizhou, Huang, Yi-Hsiang, Mathur, Advait, Wellstood, F. C., Palmer, B. S.

We have fabricated and characterized asymmetric gap-engineered junctions and transmon devices. To create Josephson junctions with asymmetric gaps, Ti was used to proximitize and lower the superconducting gap of the Al counter-electrode. DC IV measure

Externí odkaz: http://arxiv.org/abs/2302.12280