Results 71 to 80 of about 25,049 (217)

Probabilistic shaping for ROF system with heterodyne coherent detection

APL Photonics, 2017
We investigate and compare the performance of normal and probabilistic shaping (PS) 16-ary quadrature amplitude modulation (16QAM) in a photonic vector millimeter-wave (mm-wave) signal generation system adopting
Bo Liu, Xinying Li, Ying Zhang, Xiangjun Xin, Jianjun Yu   +4 more
doaj   +1 more source

Continuous-Variable Quantum Key Distribution using Thermal States

, 2013
We consider the security of continuous-variable quantum key distribution using thermal (or noisy) Gaussian resource states. Specifically, we analyze this against collective Gaussian attacks using direct and reverse reconciliation where both protocols use
A. S. Holevo, C. C. Gerry, C. E. Shannon, C. H. Bennett, Christian Weedbrook, F. Grosshans, P. Kok, Stefano Pirandola, Timothy C. Ralph   +8 more
core   +1 more source

Frequency-modulated continuous-wave LiDAR compressive depth-mapping [PDF]

, 2018
We present an inexpensive architecture for converting a frequency-modulated continuous-wave LiDAR system into a compressive-sensing based depth-mapping camera.
Howell, John C., Knarr, Samuel H., Lum, Daniel J.   +2 more
core   +3 more sources

Measurement and control of mechanics of cardiac trabeculae secured by light‐curable hydrogel

Experimental Physiology, Volume 111, Issue 3, Page 632-642, 1 March 2026.
Abstract Isolated cardiac trabeculae are small heart muscle tissue preparations, which have been widely used in in vitro studies of mechanics and energetics function of cardiac muscle. Current instruments for such experimentation often (1) involve delicate mounting of the muscle, (2) constrain investigations to one muscle at a time, and thus (3) limit ...
Emily J. Clark Murphy, Toan Pham, June‐Chiew Han, Kenneth Tran, Khoon S. Lim, Poul M. F. Nielsen, Andrew J. Taberner   +6 more
wiley   +1 more source

A Raman-Heterodyne Study of the Hyperfine Interaction of the Optically-Excited State $^5$D$_0$ of Eu$^{3+}$:Y$_2$SiO$_5$

, 2018
The spin coherence time of $^{151}$Eu$^{3+}$ which substitutes the yttrium at site 1 in Y$_2$SiO$_5$ crystal has been extended to 6 hours in a recent work [\textit{Nature} \textbf{517}, 177 (2015)].
Guo, Guang-Can, Han, Yong-Jian, Hu, Jun, Hua, Yi-Lin, Li, Chuan-Feng, Li, Pei-Yun, Li, Xue, Li, Zong-Feng, Liang, Peng-Jun, Liu, Chao, Liu, Xiao, Ma, Yu, Tu, Tao, Xiao, Yi-Xin, Yang, Tian-Shu, Zhou, Zong-Quan   +15 more
core   +1 more source

Witnessing effective entanglement over a 2km fiber channel [PDF]

, 2010
We present a fiber-based continuous-variable quantum key distribution system. In the scheme, a quantum signal of two non-orthogonal weak optical coherent states is sent through a fiber-based quantum channel. The receiver simultaneously measures conjugate
Bennett, Bennett, Bennett, Carlos Wiechers, Christoffer Wittmann, Curty, Dominique Elser, Dorrer, Ekert, Elser, Elser, Gerd Leuchs, Gisin, Grosshans, Hansen, Hauke Häseler, Häseler, Josef Fürst, Korolkova, Lance, Legré, Leonhardt, Leonhardt, Lodewyck, Lodewyck, Lorenz, Muller, Nelder, Norbert Lütkenhaus, Pirandola, Qi, Ralph, Rigas, Rosenberg, Schmitt-Manderbach, Shannon, Shapiro, Silberhorn, Stenholm, Stucki, Ursin, Weedbrook, Zhao   +42 more
core   +1 more source

Characterization of Complex Stacking of Semiconductors Through Near Field Imaging and Spectroscopy

Advanced Materials, Volume 38, Issue 7, 2 February 2026.
SNOM imaging and spectroscopy on a mechanically cleaved facet is used to characterize the different layers of complex epitaxial heterostructures composed of a type II superlattice and highly doped semiconductors. Both the geometrical parameters of the stack and the optical properties of the individual layers and of the interfaces are retrieved, as well
Laure Tailpied, Clément Gureghian, Fréderic Fossard, Jean‐Sébastien Mérot, Jean‐Baptiste Rodriguez, Fernando Gonzalez‐Posada Flores, Grégory Vincent, Thierry Taliercio, Baptiste Fix   +8 more
wiley   +1 more source

High-Stability and Fast Calibration-Free Temperature Measurement Based on Light-Induced Thermoelastic Spectroscopy

Ultrafast Science
In this paper, a series of calibration-free temperature measurement methods based on light-induced thermoelastic spectroscopy (LITES) are proposed for the first time. These techniques utilize the steady-state and transient response characteristics of the
Xiaonan Liu, Shunda Qiao, Ying He, Yufei Ma   +3 more
doaj   +1 more source

Adaptive homodyne measurement of optical phase [PDF]

, 2002
We present an experimental demonstration of the power of real-time feedback in quantum metrology, confirming a theoretical prediction by Wiseman regarding the superior performance of an adaptive homodyne technique for single-shot measurement of optical ...
A. C. Doherty, Andrew C. Doherty, D. W. Berry, Hideo Mabuchi, John K. Au, John K. Stockton, K. Schneider, Michael A. Armen, W. P. Smith, Y. Yamamoto   +9 more
core   +4 more sources

Full Crystallographic Imaging of Hexagonal Boron Nitride Monolayers with Phonon‐Enhanced Sum‐Frequency Microscopy

Advanced Materials, Volume 38, Issue 7, 2 February 2026.
A nonlinear optical microscopy technique is introduced that enables rapid imaging of hexagonal boron nitride monolayers, which are usually optically invisible. The nonlinear mixing of mid‐infrared and visible laser pulses enables full crystallographic imaging through phase‐resolved sum‐frequency generation microscopy, where the resonant excitation of a
Niclas S. Mueller, Alexander P. Fellows, Ben John, Andrew E. Naclerio, Christian Carbogno, Katayoun Gharagozloo‐Hubmann, Damián Baláž, Ryan A. Kowalski, Hendrik H. Heenen, Christoph Scheurer, Karsten Reuter, Joshua D. Caldwell, Martin Wolf, Piran R. Kidambi, Martin Thämer, Alexander Paarmann   +15 more
wiley   +1 more source