Results 41 to 50 of about 1,385,882 (350)

Classical communication enhanced quantum state verification

npj Quantum Information, 2020
Quantum state verification provides an efficient approach to characterize the reliability of quantum devices for generating certain target states. The figure of merit of a specific strategy is the estimated infidelity ϵ of the tested state to the target ...
Wen-Hao Zhang, Xiao Liu, Peng Yin, Xing-Xiang Peng, Gong-Chu Li, Xiao-Ye Xu, Shang Yu, Zhi-Bo Hou, Yong-Jian Han, Jin-Shi Xu, Zong-Quan Zhou, Geng Chen, Chuan-Feng Li, Guang-Can Guo   +13 more
doaj   +1 more source

Intensity modulator for secure, stable, and high-performance decoy-state quantum key distribution

npj Quantum Information, 2021
The decoy-state method substantially improves the performance of quantum key distribution (QKD) and perfectly solves crucial issues caused by multiphoton pulses.
Feng-Yu Lu, Xing Lin, Shuang Wang, Guan-Jie Fan-Yuan, Peng Ye, Rong Wang, Zhen-Qiang Yin, De-Yong He, Wei Chen, Guang-Can Guo, Zheng-Fu Han   +10 more
doaj   +1 more source

The capacity of the noisy quantum channel [PDF]

, 1996
An upper limit is given to the amount of quantum information that can be transmitted reliably down a noisy, decoherent quantum channel. A class of quantum error-correcting codes is presented that allow the information transmitted to attain this limit ...
A. R. Calderbank, B. Schumacher, C. Caves, C. E. Shannon, C. H. Bennett, C. H. Bennett, C. Monroe, J. I. Cirac, P. Hausladen, P. W. Shor, P. W. Shor, Q. A. Turchette, R. Jozsa, R. Laflamme, R. Landauer, Seth Lloyd, W. H. Zurek   +16 more
core   +2 more sources

Coherent dynamics of multi-spin V $${}_{{{{{{{{\rm{B}}}}}}}}}^{-}$$ B − center in hexagonal boron nitride

Nature Communications, 2022
Hexagonal boron nitride (hBN) has recently been demonstrated to contain optically polarized and detected electron spins that can be utilized for implementing qubits and quantum sensors in nanolayered-devices.
Wei Liu, Viktor Ivády, Zhi-Peng Li, Yuan-Ze Yang, Shang Yu, Yu Meng, Zhao-An Wang, Nai-Jie Guo, Fei-Fei Yan, Qiang Li, Jun-Feng Wang, Jin-Shi Xu, Xiao Liu, Zong-Quan Zhou, Yang Dong, Xiang-Dong Chen, Fang-Wen Sun, Yi-Tao Wang, Jian-Shun Tang, Adam Gali, Chuan-Feng Li, Guang-Can Guo   +21 more
doaj   +1 more source

Counterfactual communication without a trace in the transmission channel

npj Quantum Information, 2023
We report an experimental realization of a modified counterfactual communication protocol that eliminates the dominant environmental trace left by photons passing through the transmission channel.
Wei-Wei Pan, Xiao Liu, Xiao-Ye Xu, Qin-Qin Wang, Ze-Di Cheng, Jian Wang, Zhao-Di Liu, Geng Chen, Zong-Quan Zhou, Chuan-Feng Li, Guang-Can Guo, Justin Dressel, Lev Vaidman   +12 more
doaj   +1 more source

A molecular perspective on quantum information

Proceedings of the Royal Society A, 2023
Some of the fundamentals of quantum information science are described, including the concepts of quantum resources, quantum states and mixedness of states. The explanations are detailed and include a combination of basic facts with fully worked examples,
Gregory D. Scholes
semanticscholar   +1 more source

Linear preservers and quantum information science

, 2012
Let $m,n\ge 2$ be positive integers, $M_m$ the set of $m\times m$ complex matrices and $M_n$ the set of $n\times n$ complex matrices. Regard $M_{mn}$ as the tensor space $M_m\otimes M_n$. Suppose $|\cdot|$ is the Ky Fan $k$-norm with $1 \le k \le mn$, or
Fosner, Ajda, Huang, Zejun, Li, Chi-Kwong, Sze, Nung-Sing   +3 more
core   +1 more source

Gaussian Quantum Information [PDF]

, 2011
The science of quantum information has arisen over the last two decades centered on the manipulation of individual quanta of information, known as quantum bits or qubits.
Arthurs, E., Bachor, H.-A., Bennett, C. H., Bergou, J., Braunstein, S. L., Bravyi, S., Cerf, N. J., Cerf, N. J., Cerf, N. J., Childs, A., Christian Weedbrook, Cover, T. M., Eisert, J., Ferraro, A., Fuchs, C. A., Furusawa, A., Gerry, C. C., Giedke, G., Grosshans, F., Guha, S., Helstrom, C. W., Holevo, A. S., Holevo, A. S., Jeffrey H. Shapiro, Jeong, H., Kok, P., Leonhardt, U., Menezes, A., Nicolas J. Cerf, Nielsen, M. A., Pati, A. K., Paulsen, V., Ralph, T. C., Ralph, T. C., Raúl García-Patrón, Renner, R., Schneier, B., Seth Lloyd, Shannon, C. E., Shannon, C. E., Shapiro, J. H., Shor, P., Stefano Pirandola, Stinespring, W. F., Timothy C. Ralph, van Assche, G., van Loock, P., Vernam, G. S., Walls, D. F.   +48 more
core   +2 more sources

Optical demonstration of quantum fault-tolerant threshold

Light: Science & Applications, 2022
We observe the error rate threshold of quantum fault-tolerant computation by using optical spatial modes of two entangled photons to encode logical qubits.
Kai Sun, Ze-Yan Hao, Yan Wang, Jia-Kun Li, Xiao-Ye Xu, Jin-Shi Xu, Yong-Jian Han, Chuan-Feng Li, Guang-Can Guo   +8 more
doaj   +1 more source

Materials science for quantum information science and technology

MRS bulletin, 2020
Quantum computing, sensing, and communications are emerging technologies that may circumvent known limitations of their existing traditional counterparts.
C. Richardson, V. Lordi, S. Misra, J. Shabani   +3 more
semanticscholar   +1 more source