Results 31 to 40 of about 673,674 (298)

Exploiting the quantum Zeno effect to beat photon loss in linear optical quantum information processors [PDF]

, 2004
We devise a new technique to enhance transmission of quantum information through linear optical quantum information processors. The idea is based on applying the Quantum Zeno effect to the process of photon absorption.
Federico M. Spedalieri, Franson, Gingrich, Hwang Lee, Imoto, Jonathan P. Dowling, Kasap, Kishore T. Kapale, Knill, Kok, Marian Florescu, Misra, Munro, Nogues, Pittman, Rauschenbeutel, Saito, Scully, Ulvi Yurtsever, Wu, Zubairy, Zubairy   +21 more
core   +3 more sources

Quantum measurements with a quantum computer

, 1997
9 pages, 3 figures ...
D'Helon, C., Milburn, Gerard J.
openaire   +3 more sources

QUANTUM MECHANICS AS QUANTUM MEASURE THEORY [PDF]

Modern Physics Letters A, 1994
The additivity of classical probabilities is only the first in a hierarchy of possible sum rules, each of which implies its successor. The first and most restrictive sum rule of the hierarchy yields measure theory in the Kolmogorov sense, which is appropriate physically for the description of stochastic processes such as Brownian motion.
openaire   +3 more sources

Universal Quantum Measurements [PDF]

Journal of Physics: Conference Series, 2015
We introduce a family of operations in quantum mechanics that one can regard as "universal quantum measurements" (UQMs). These measurements are applicable to all finite-dimensional quantum systems and entail the specification of only a minimal amount of structure.
Brody, DC, Hughston, LP
openaire   +5 more sources

Theory of the Quantum Speed Up [PDF]

, 2000
Insofar as quantum computation is faster than classical, it appears to be irreversible. In all quantum algorithms found so far the speed-up depends on the extra-dynamical irreversible projection representing quantum measurement.
Benio P., David Ritz Finkelstein, Giuseppe Castagnoli   +2 more
core   +2 more sources

Quasi-one-dimensional topological material Bi4X4(X=Br,I)

Advances in Physics: X, 2022
Bismuth halogenides, a family of quasi-one-dimensional (1D) materials, including α and α phases of Bi4Br4 and Bi4I4, have been predicted to exhibit rich and interesting topological properties.
Junfeng Han, Wende Xiao, Yugui Yao
doaj   +1 more source

Enhancement of quantum correlations between two particles under decoherence in finite temperature environment

, 2014
Enhancing the quantum correlations in realistic quantum systems interacting with the environment of finite temperature is an important subject in quantum information processing.
Doustimotlagh, Nasibollah, Long, Gui-Lu, Wang, Shuhao, You, Chenglong   +3 more
core   +1 more source

Two-Dimensional Cr5Te8@Graphite Heterostructure for Efficient Electromagnetic Microwave Absorption

Nano-Micro Letters, 2023
Highlights A Cr5Te8@expanded graphite heterostructure is fabricated by chemical vapor deposition, exhibiting remarkable microwave absorption performance with a minimum reflection loss of up to − 57.6 dB at a thin thickness of only 1.4 mm under a low ...
Liyuan Qin, Ziyang Guo, Shuai Zhao, Denan Kong, Wei Jiang, Ruibin Liu, Xijuan Lv, Jiadong Zhou, Qinghai Shu   +8 more
doaj   +1 more source

Enhanced Readout from Spatial Interference Fringes in a Point-Source Cold Atom Inertial Sensor

Sensors, 2023
When the initial size of an atom cloud in a cold atom interferometer is negligible compared to its size after free expansion, the interferometer is approximated to a point-source interferometer and is sensitive to rotational movements by introducing an ...
Jing Wang, Junze Tong, Wenbin Xie, Ziqian Wang, Yafei Feng, Xiaolong Wang   +5 more
doaj   +1 more source

Towards the Fundamental Quantum Limit of Linear Measurements of Classical Signals [PDF]

, 2017
The quantum Cram\'er-Rao bound (QCRB) sets a fundamental limit for the measurement of classical signals with detectors operating in the quantum regime.
Adhikari, Rana X, Chen, Yanbei, Ma, Yiqiu, Miao, Haixing, Pang, Belinda   +4 more
core   +4 more sources