Results 81 to 90 of about 205,117 (196)

Picosecond coherent electron motion in a silicon single-electron source

, 2019
Understanding ultrafast coherent electron dynamics is necessary for application of a single-electron source to metrological standards, quantum information processing, including electron quantum optics, and quantum sensing.
Fujiwara, Akira, Johnson, Nathan, Kataoka, Masaya, Ryu, Sungguen, Sim, H. -S., Yamahata, Gento   +5 more
core   +1 more source

Coherence-Driven Topological Transition in Quantum Metamaterials

, 2016
We introduce and theoretically demonstrate a quantum metamaterial made of dense ultracold neutral atoms loaded into an inherently defect-free artificial crystal of light, immune to well-known critical chal- lenges inevitable in conventional solid-state ...
Jha, Pankaj K., Kim, Jeongmin, Mrejen, Michael, Rostovtsev, Yuri V., Wang, Yuan, Wu, Chihhui, Zhang, Xiang   +6 more
core   +1 more source

A Reconfigurable Gate Architecture for Si/SiGe Quantum Dots

, 2015
We demonstrate a reconfigurable quantum dot gate architecture that incorporates two interchangeable transport channels. One channel is used to form quantum dots and the other is used for charge sensing.
Hazard, T. M., Mi, X., Petta, J. R., Wang, K., Zajac, D. M.   +4 more
core   +1 more source

Suppressing Thermal Noise to Sub-Millikelvin Level in a Single-Spin Quantum System Using Realtime Frequency Tracking

Micromachines
A single nitrogen-vacancy (NV) center in a diamond can be used as a nanoscale sensor for magnetic field, electric field or nuclear spins. Due to its low photon detection efficiency, such sensing processes often take a long time, suffering from an ...
Zhiyi Hu, Jingyan He, Runchuan Ye, Xue Lin, Feifei Zhou, Nanyang Xu   +5 more
doaj   +1 more source

Hybrid quantum sensing in diamond

Frontiers in Physics
Quantum sensing is a quantum technology for ultrasensitive detection, which is particularly useful for sensing weak signals at the nanoscale. Nitrogen vacancy centers in diamond, thanks to their superb quantum coherence under ambient conditions and the ...
Ning Wang, Ning Wang, Jianming Cai, Jianming Cai   +3 more
doaj   +1 more source

Compressed sensing quantum process tomography for superconducting quantum gates

, 2014
We apply the method of compressed sensing (CS) quantum process tomography (QPT) to characterize quantum gates based on superconducting Xmon and phase qubits. Using experimental data for a two-qubit controlled-Z gate, we obtain an estimate for the process
Barends, R., Kelly, J., Korotkov, Alexander N., Kosut, Robert L., Martinis, John M., Rodionov, Andrey V., Sank, Daniel, Veitia, Andrzej, Wenner, J.   +8 more
core   +1 more source

Quantum vibropolaritonic sensing

Science Advances
Vibrational spectroscopies are pivotal in analytical methods and biomedical diagnostics owing to their singular ability to provide molecular specificity. However, they are intrinsically limited by weak light-matter interactions and vulnerability to intensity fluctuations and spectral interference.
Peng Zheng, Steve Semancik, Ishan Barman
openaire   +1 more source

Quantum-Enhanced Sensing with Squeezed Light: From Fundamentals to Applications

Applied Sciences
Squeezed light, a prominent non-classical state of light, exhibits reduced quantum noise in one quadrature component below the standard quantum limit (SQL).
Xing Heng, Lingchen Zhang, Qingyun Yin, Wei Liu, Lulu Tang, Yueyang Zhai, Kai Wei   +6 more
doaj   +1 more source

Hybrid Mechanical Systems

, 2014
We discuss hybrid systems in which a mechanical oscillator is coupled to another (microscopic) quantum system, such as trapped atoms or ions, solid-state spin qubits, or superconducting devices.
A Bhattacherjee, AA Geraci, AD Armour, AD Cronin, AJ Shields, B Vogell, C Degen, C Deutsch, C Gardiner, C Genes, C Genes, C Joshi, CK Law, CL Degen, D Hunger, D Hunger, D Leibfried, D Meiser, D Mozyrsky, D Rugar, D Vion, D Wineland, D Wineland, E Buks, EK Irish, F Jelezko, F Xue, F Xue, G Balasubramanian, G Chiara De, H Carmichael, H Ian, H Mamin, I Bloch, I Martin, I Wilson-Rae, J Clarke, J Maze, JA Schreier, JM Raimond, K Hammerer, K Hammerer, K Jähne, K Zhang, L Tian, M Grinolds, M Korppi, M Paternostro, M Poggio, M Poggio, M Wallquist, M Wallquist, MA Kasevich, MD LaHaye, MP Blencowe, O Arcizet, P Magusin, P Rabl, P Rabl, P Rabl, P Treutlein, R Budakian, R Hanson, R Wynands, RG Knobel, S Camerer, S Chu, S Etaki, S Kolkowitz, S Singh, S Singh, S Steinke, S Zippilli, SA McGee, SD Bennett, WK Hensinger, X Zhou, YD Wang, YJ Wang, Yu Makhlin   +79 more
core   +2 more sources

Networked quantum sensing

, 2017
We introduce a general model for a network of quantum sensors, and we use this model to consider the question: when do correlations (quantum or classical) between quantum sensors enhance the precision with which the network can measure an unknown set of parameters? We rigorously answer this question for a range of practically important problems.
Proctor, T. J., Knott, P. A., Dunningham, J. A.   +2 more
openaire   +2 more sources