Results 71 to 80 of about 205,117 (196)

Distributed quantum sensing in a continuous variable entangled network

, 2019
Networking plays a ubiquitous role in quantum technology. It is an integral part of quantum communication and has significant potential for upscaling quantum computer technologies that are otherwise not scalable. Recently, it was realized that sensing of
Andersen, Ulrik L., Borregaard, Johannes, Breum, Casper R., Christandl, Matthias, Gehring, Tobias, Guo, Xueshi, Izumi, Shuro, Larsen, Mikkel V., Neergaard-Nielsen, Jonas S.   +8 more
core   +1 more source

Localization-driven quantum sensing

Physical Review A
We show that the delocalization-localization transition in a quantum-many body (QMB) systems is a compelling quantum resource for achieving quantum-enhanced sensitivity in parameter estimation. We exploit the vulnerability of a near-transition QMB state against the parameter shift for devising efficient sensing tools.
Ayan Sahoo, Utkarsh Mishra, Debraj Rakshit   +2 more
openaire   +2 more sources

Electron spin control of optically levitated nanodiamonds in vacuum

, 2016
Electron spins of diamond nitrogen-vacancy (NV) centers are important quantum resources for nanoscale sensing and quantum information. Combining NV spins with levitated optomechanical resonators will provide a hybrid quantum system for novel applications.
Ahn, Jonghoon, Bang, Jaehoon, Hoang, Thai M., Li, Tongcang   +3 more
core   +1 more source

Mass sensing by quantum criticality [PDF]

Optics Letters, 2019
Mass sensing connects the mass variation to a frequency shift of a mechanical oscillator, whose limitation is determined by its mechanical frequency resolution. Here we propose a method to enlarge a minute mechanical frequency shift, which is smaller than the linewidth of the mechanical oscillator, into a huge frequency shift of the normal mode ...
Bin, Shang-Wu, Lü, Xin-You, Yin, Tai-Shuang, Zhu, Gui-Lei, Bin, Qian, Wu, Ying   +5 more
openaire   +3 more sources

All-day free-space quantum key distribution with thermal source towards quantum secure communications for unmanned vehicles

npj Quantum Information
Unmanned vehicles (UV) demand highly secure communication system with high-cost-effectiveness. Bypassing the use of quantum coherent source and active modulations, passive-state-preparation (PSP) continuous-variable quantum key distribution (CVQKD) with ...
Hanwen Yin, Peng Huang, Zehao Zhou, Tao Wang, Xueqin Jiang, Guihua Zeng   +5 more
doaj   +1 more source

Discrete-Modulated Coherent-State Quantum Key Distribution with Basis-Encoding

Research
Discrete-modulated coherent-state continuous-variable quantum key distribution (DMCS-CVQKD) is of great value for its simple implementation. However, the traditional DMCS-CVQKD scheme cannot tolerate the high channel excess noise and channel loss ...
Mingxuan Guo, Peng Huang, Le Huang, Xiaojuan Liao, Xueqin Jiang, Tao Wang, Guihua Zeng   +6 more
doaj   +1 more source

Practical advantage of quantum machine learning in ghost imaging

Communications Physics, 2023
Demonstrating the practical advantage of quantum computation remains a long-standing challenge whereas quantum machine learning becomes a promising application that can be resorted to.
Tailong Xiao, Xinliang Zhai, Xiaoyan Wu, Jianping Fan, Guihua Zeng   +4 more
doaj   +1 more source

High-precision force sensing using a single trapped ion

, 2016
We introduce quantum sensing schemes for measuring very weak forces with a single trapped ion. They use the spin-motional coupling induced by the laser-ion interaction to transfer the relevant force information to the spin-degree of freedom.
Ivanov, Peter A., Singer, Kilian, Vitanov, Nikolay V.   +2 more
core   +2 more sources

Enhanced Resolution of Lossy Interferometry by Coherent Amplification of Single Photons

, 2010
In the quantum sensing context most of the efforts to design novel quantum techniques of sensing have been constrained to idealized, noise-free scenarios, in which effects of environmental disturbances could be neglected.
De Martini, F., Sciarrino, F., Spagnolo, N., Toffoli, L., Vitelli, C.   +4 more
core   +1 more source

Quantum-Empowered Fiber Sensing Metrology

Photonics
Quantum sensing leverages quantum resources to enable ultra-precise measurements beyond classical limits, driving transformative advancements in metrology.
Xiaojie Zuo, Zhangguan Tang, Boyao Li, Xiaoyong Chen, Jinghua Sun   +4 more
doaj   +1 more source