Results 61 to 70 of about 828,437 (187)

Experimental error suppression in Cross-Resonance gates via multi-derivative pulse shaping

npj Quantum Information
While quantum circuits are reaching impressive widths in the hundreds of qubits, their depths have not been able to keep pace. In particular, cloud computing gates on multi-qubit, fixed-frequency superconducting chips continue to hover around the 1 ...
Boxi Li, Tommaso Calarco, Felix Motzoi
doaj   +1 more source

Universally Robust Quantum Control

Physical Review Letters
We study the robustness of the evolution of a quantum system against small uncontrolled variations in parameters in the Hamiltonian. We show that the fidelity susceptibility, which quantifies the perturbative error to leading order, can be expressed in superoperator form and use this to derive control pulses which are robust to any class of systematic ...
Pablo M. Poggi, Gabriele De Chiara, Steve Campbell, Anthony Kiely   +3 more
openaire   +5 more sources

Long-lived topological time-crystalline order on a quantum processor

Nature Communications
Topologically ordered phases of matter elude Landau’s symmetry-breaking theory, featuring a variety of intriguing properties such as long-range entanglement and intrinsic robustness against local perturbations.
Liang Xiang, Wenjie Jiang, Zehang Bao, Zixuan Song, Shibo Xu, Ke Wang, Jiachen Chen, Feitong Jin, Xuhao Zhu, Zitian Zhu, Fanhao Shen, Ning Wang, Chuanyu Zhang, Yaozu Wu, Yiren Zou, Jiarun Zhong, Zhengyi Cui, Aosai Zhang, Ziqi Tan, Tingting Li, Yu Gao, Jinfeng Deng, Xu Zhang, Hang Dong, Pengfei Zhang, Si Jiang, Weikang Li, Zhide Lu, Zheng-Zhi Sun, Hekang Li, Zhen Wang, Chao Song, Qiujiang Guo, Fangli Liu, Zhe-Xuan Gong, Alexey V. Gorshkov, Norman Y. Yao, Thomas Iadecola, Francisco Machado, H. Wang, Dong-Ling Deng   +40 more
doaj   +1 more source

Quantum control in infinite dimensions

, 2003
Accurate control of quantum evolution is an essential requirement for quantum state engineering, laser chemistry, quantum information and quantum computing.
Ball, Gramss, Huang, Lloyd, R Vilela Mendes, Rabitz, Reed, Witold Karwowski   +7 more
core   +2 more sources

Demonstrating quantum error mitigation on logical qubits

Nature Communications
A long-standing challenge in quantum computing is developing technologies to overcome the inevitable noise in qubits. To enable meaningful applications in the early stages of fault-tolerant quantum computing, devising methods to suppress post-correction ...
Aosai Zhang, Haipeng Xie, Yu Gao, Jia-Nan Yang, Zehang Bao, Zitian Zhu, Jiachen Chen, Ning Wang, Chuanyu Zhang, Jiarun Zhong, Shibo Xu, Ke Wang, Yaozu Wu, Feitong Jin, Xuhao Zhu, Yiren Zou, Ziqi Tan, Zhengyi Cui, Fanhao Shen, Tingting Li, Yihang Han, Yiyang He, Gongyu Liu, Jiayuan Shen, Han Wang, Yanzhe Wang, Hang Dong, Jinfeng Deng, Hekang Li, Zhen Wang, Chao Song, Qiujiang Guo, Pengfei Zhang, Ying Li, H. Wang   +34 more
doaj   +1 more source

Kerr-MOG black holes with stationary scalar clouds

European Physical Journal C: Particles and Fields, 2020
We establish the existence of stationary clouds of massive test scalar fields around Kerr-MOG black holes. By solving the Klein–Gordon equation numerically, we present the existence lines of the clouds in the parameter space of the Kerr-MOG black holes ...
Xiongying Qiao, Mengjie Wang, Qiyuan Pan, Jiliang Jing   +3 more
doaj   +1 more source

Emergence of steady quantum transport in a superconducting processor

Nature Communications
Non-equilibrium quantum transport is crucial to technological advances ranging from nanoelectronics to thermal management. In essence, it deals with the coherent transfer of energy and (quasi-)particles through quantum channels between thermodynamic ...
Pengfei Zhang, Yu Gao, Xiansong Xu, Ning Wang, Hang Dong, Chu Guo, Jinfeng Deng, Xu Zhang, Jiachen Chen, Shibo Xu, Ke Wang, Yaozu Wu, Chuanyu Zhang, Feitong Jin, Xuhao Zhu, Aosai Zhang, Yiren Zou, Ziqi Tan, Zhengyi Cui, Zitian Zhu, Fanhao Shen, Tingting Li, Jiarun Zhong, Zehang Bao, Liangtian Zhao, Jie Hao, Hekang Li, Zhen Wang, Chao Song, Qiujiang Guo, H. Wang, Dario Poletti   +31 more
doaj   +1 more source

Holographic subregion complexity in unbalanced holographic superconductors

European Physical Journal C: Particles and Fields, 2021
By using the subregion CV conjecture, we numerically investigate the behavior of the holographic subregion complexity (HSC) and compare it with the holographic entanglement entropy (HEE) in the unbalanced holographic superconductors, which indicates that
Yu Shi, Qiyuan Pan, Jiliang Jing
doaj   +1 more source

Deterministic entanglement of photons in two superconducting microwave resonators

, 2010
Quantum entanglement, one of the defining features of quantum mechanics, has been demonstrated in a variety of nonlinear spin-like systems. Quantum entanglement in linear systems has proven significantly more challenging, as the intrinsic energy level ...
A. D. O’Connell, A. N. Cleland, D. Sank, Erik Lucero, H. Wang, J. Wenner, J. Zhao, John M. Martinis, M. Lenander, M. Neeley, M. Weides, Matteo Mariantoni, Radoslaw C. Bialczak, S. Haroche, T. Yamamoto, Y. Yin   +15 more
core   +1 more source

Controlling quantum state reductions [PDF]

Physics Letters A, 2001
Every measurement leaves the object in a family of states indexed by the possible outcomes. This family, called the posterior states, is usually a family of the eigenstates of the measured observable, but it can be an arbitrary family of states by controlling the object-apparatus interaction.
openaire   +2 more sources