Results 41 to 50 of about 828,437 (187)

Coherent control of quasi-degenerate stationary-like states via multiple resonances

Scientific Reports, 2017
We use three bosons held in a depth-tilt combined-modulated double-well to study coherent control of quantum transitions between quasi-degenerate stationary-like states (QDSLSs) with the same quasienergy.
Yunrong Luo, Kuo Hai, Mingliang Zou, Wenhua Hai   +3 more
doaj   +1 more source

Optimal Control of Molecular Motion Expressed Through Quantum Fluid Dynamics [PDF]

, 2000
A quantum fluid dynamic control formulation is presented for optimally manipulating atomic and molecular systems. In quantum fluid dynamic the control quantum system is expressed in terms of the probability density and the quantum current. This choice of
A. Assion, A. Assion, A. P. Peire, A. Shnitman, Attila Askar, Bijoy K. Dey, Bijoy K. Dey, C. C. Marston, C. J. Bardeen, D. Bohm, D. Bohm, D. Bohm, D. J. Tannor, D. J. Tannor, D. J. Tannor, F. S. Mayor, G. G. Balint-Kurti, G. G. Balint-Kurti, G. Q. Xing, H. Rabitz, Herschel Rabitz, J. Botina, J. Cao, J. F. Olgilvie, J. L. Herek, J. P. Boris, P. Brumer, P. Brumer, R. Demiralp, R. Kosloff, R. Löhner, R. S. Judson, S. A. Rice, S. Shi, S. Shi, T. Baumert, V. D. Kleiman, W. H. Press, W. Zhu, Y. Ohtsuki   +39 more
core   +3 more sources

Experimental demonstration of quantum continual learning with superconducting qubits

npj Quantum Information
Quantum computers may outperform classical computers on machine learning tasks. Yet, quantum learning systems may suffer from catastrophic forgetting, which is widely believed to be an obstacle to achieving continual learning.
Chuanyu Zhang, Zhide Lu, Liangtian Zhao, Shibo Xu, Weikang Li, Ke Wang, Jiachen Chen, Yaozu Wu, Feitong Jin, Xuhao Zhu, Yu Gao, Ziqi Tan, Zhengyi Cui, Aosai Zhang, Ning Wang, Yiren Zou, Tingting Li, Fanhao Shen, Jiarun Zhong, Zehang Bao, Zitian Zhu, Zixuan Song, Jinfeng Deng, Hang Dong, Pengfei Zhang, Wenjie Jiang, Zheng-Zhi Sun, Pei-Xin Shen, Hekang Li, Qiujiang Guo, Zhen Wang, Jie Hao, H. Wang, Dong-Ling Deng, Chao Song   +34 more
doaj   +1 more source

Shadow of a Schwarzschild black hole surrounded by a Bach–Weyl ring

European Physical Journal C: Particles and Fields, 2020
We have studied the shadows of a Schwarzschild black hole surrounded by a Bach–Weyl ring through the backward ray-tracing method. The presence of Bach–Weyl ring leads to that the photon dynamical system is non-integrable and then chaos would appear in ...
Mingzhi Wang, Songbai Chen, Jieci Wang, Jiliang Jing   +3 more
doaj   +1 more source

Quantum control and the Strocchi map [PDF]

, 2002
Identifying the real and imaginary parts of wave functions with coordinates and momenta, quantum evolution may be mapped onto a classical Hamiltonian system.
A. Heslot, C.D. Schwieters, C.M. Caves, D. Montgomery, F. Strocchi, G. Marmo, G.M. Huang, J. Anadan, M. Dahleh, M. Demiralp, M. Demiralp, R. Cirelli, R. Vilela Mendes, R.A. DeCarlo, S. Weigert, S. Weigert, S.G. Schirmer, T.W.B. Kibble, V. I. Man’ko, V. Ramakrishna, V.I. Man’ko, V.I. Man’ko, V.I. Man’ko   +22 more
core   +3 more sources

Enhanced quantum state transfer by circumventing quantum chaotic behavior

Nature Communications
The ability to realize high-fidelity quantum communication is one of the many facets required to build generic quantum computing devices. In addition to quantum processing, sensing, and storage, transferring the resulting quantum states demands a careful
Liang Xiang, Jiachen Chen, Zitian Zhu, Zixuan Song, Zehang Bao, Xuhao Zhu, Feitong Jin, Ke Wang, Shibo Xu, Yiren Zou, Hekang Li, Zhen Wang, Chao Song, Alexander Yue, Justine Partridge, Qiujiang Guo, Rubem Mondaini, H. Wang, Richard T. Scalettar   +18 more
doaj   +1 more source

Minimal control power of controlled dense coding and genuine tripartite entanglement

Scientific Reports, 2017
We investigate minimal control power (MCP) for controlled dense coding defined by the channel capacity. We obtain MCPs for extended three-qubit Greenberger-Horne-Zeilinger (GHZ) states and generalized three-qubit W states.
Changhun Oh, Hoyong Kim, Kabgyun Jeong, Hyunseok Jeong   +3 more
doaj   +1 more source

Polarized image of a Schwarzschild black hole with a thin accretion disk as photon couples to Weyl tensor

European Physical Journal C: Particles and Fields, 2021
We have studied polarized image of a Schwarzschild black hole with an equatorial thin accretion disk as photon couples to Weyl tensor. The birefringence of photon originating from the coupling affect the black hole shadow, the thin disk pattern and its ...
Zelin Zhang, Songbai Chen, Xin Qin, Jiliang Jing   +3 more
doaj   +1 more source

Real-time Information, Uncertainty and Quantum Feedback Control [PDF]

, 2014
Feedback is the core concept in cybernetics and its effective use has made great success in but not limited to the fields of engineering, biology, and computer science.
Chen, Chunlin, Dong, Daoyi, Liu, Lijun, Qi, Bo, Xi, Zairong   +4 more
core  

Quantum Internal Model Principle: Decoherence Control

, 2007
In this article, we study the problem of designing a Decoherence Control for quantum systems with the help of a scalable ancillary quantum control and techniques from geometric control theory, in order to successfully and completely decouple an open ...
Ganesan, Narayan, Tarn, Tzyh-Jong
core   +1 more source