Results 31 to 40 of about 43,359 (276)

Atom in a coherently controlled squeezed vacuum [PDF]

, 2006
A broadband squeezed vacuum photon field is characterized by a complex squeezing function. We show that by controlling the wavelength dependence of its phase it is possible to change the dynamics of the atomic polarization interacting with the squeezed ...
C. W. Gardiner, Eran Ginossar, Itay Rabinak, J. H. Hale, M. M. Wefers, Shimon Levit   +5 more
core   +2 more sources

A Multi-Mode Recognition Method for Broadband Oscillation Based on Compressed Sensing and EEMD

Applied Sciences
In power systems, the application of wind power generation equipment and power electronic devices leads to an increased frequency of broadband oscillation events, and the detection of oscillation information becomes extremely difficult, due to the ...
Jinggeng Gao, Honglei Xu, Yong Yang, Haoming Niu, Jinping Liang, Haiying Dong   +5 more
doaj   +1 more source

All-Optical Broadband Excitation of the Motional State of Trapped Ions

, 2012
We have developed a novel all-optical broadband scheme for exciting, amplifying and measuring the secular motion of ions in a radio frequency trap. Oscillation induced by optical excitation has been coherently amplified to precisely control and measure ...
A. Barenco, A. Gardner, D. Leibfried, D. Leibfried, D.B. Hume, D.J. Berkeland, D.M. Lucas, E. Brama, H. Häffner, H.J. Kimble, I. Bloch, J.C.J. Koelemeij, J.H. Wesenberg, J.J. García, K. Dholakia, K. Kim, K. Sheridan, K. Sheridan, K. Vahala, L. Hornekær, M. Drewsen, M. Keller, M. Riebe, M. Welling, M.J. Biercuk, M.J. Biercuk, N. Seymour-Smith, P.O. Schmidt, Q.A. Turchette, R. Blatt, R. Blümel, S. Schlemmer   +31 more
core   +1 more source

A Multi-Mode Recognition Method for Broadband Oscillation Based on CS-OMP and Adaptive VMD

Energies
Due to the application of power electronics and wind power generation equipment in power systems, broadband oscillation events constantly appear, which makes broadband oscillation difficult to detect due to the limitations of communication bandwidth and ...
Jinggeng Gao, Honglei Xu, Yong Yang, Xujun Zhang, Xiangde Mao, Haiying Dong   +5 more
doaj   +1 more source

Time-Resolved Ultraviolet Observations of the Globular Cluster X-ray Source in NGC 6624: The Shortest Known Period Binary System

, 1997
Using the Faint Object Spectrograph (FOS) aboard the Hubble Space Telescope, we have obtained the first time-resolved spectra of the King et al. ultraviolet-bright counterpart to the 11-minute binary X-ray source in the core of the globular cluster NGC ...
Auriere M., Auriere M., Bruce Margon, Deutsch E. W., Eric W. Deutsch, Homer L., Richard G. Allen, Ronald A. Downes, Scott F. Anderson   +8 more
core   +1 more source

Coherent control of broadband vacuum squeezing [PDF]

, 2007
We present the observation of optical fields carrying squeezed vacuum states at sideband frequencies from 10Hz to above 35MHz. The field was generated with type-I optical parametric oscillation below threshold at 1064nm.
Chelkowski, Simon, Danzmann, Karsten, Schnabel, Roman, Vahlbruch, Henning   +3 more
core   +2 more sources

Research on broadband oscillation characteristics and additional damping control of new energy grid-connected systems

Frontiers in Energy Research
The large-scale grid connection of new energy sources makes the power system highly electronic. The resulting broadband oscillation problem is the main challenge hindering the safe and stable operation of current high-proportion new energy power systems.
Qian Feng, Zhaoxin Du, Desheng Zhou, Xingang Yang, Aiqiang Pan, Jiaxin Zuo, Xiu Yang   +6 more
doaj   +1 more source

Research of cooperative multi-stability composite energy collection with multi-frequency and broadband oscillation

Frontiers in Materials, 2023
Vibration energy, as a sustainable energy source, has been widely studied. However, due to the low-frequency and randomness of vibration energy, it is difficult to collect vibration energy. Therefore, how to efficiently collect vibration energy is a very
Zhengxin Cao, Renming Yang, Mingdong Hou, Guangye Li   +3 more
doaj   +1 more source

Inflationary Steps in the Planck Data

, 2013
We extend and improve the modeling and analysis of large-amplitude, sharp inflationary steps for second order corrections required by the precision of the Planck CMB power spectrum and for arbitrary Dirac-Born-Infeld sound speed. With two parameters, the
Hu, Wayne, Miranda, V
core   +1 more source

Subcortical Source and Modulation of the Narrowband Gamma Oscillation in Mouse Visual Cortex [PDF]

, 2017
Primary visual cortex exhibits two types of gamma rhythm: broadband activity in the 30-90 Hz range and a narrowband oscillation seen in mice at frequencies close to 60 Hz.
Ayaz, A, Busse, L, Carandini, M, Haider, B, Harris, KD, Krumin, M, Lien, AD, Reinhold, K, Rosón, MR, Saleem, AB   +9 more
core