331 citations · 470 across the 11 of their papers we have counts for
11 papers
Beyond-Ten-Hour Coherence in a Decoherence-Free Trapped-Ion Clock Qubit
Jiahao Pi, Xiangjia Liu, Junle Cao +8
Quantum systems promise to revolutionize information processing science and technology [1-3]. The preservation of quantum coherence, the defining property of qubits, fundamentally…
A Single-Ion Information Engine for Charging Quantum Battery
Jialiang Zhang, Pengfei Wang, Wentao Chen +12
Information engines produce mechanical work through measurement and adaptive control. For information engines, the principal challenge lies in how to store the generated work for s…
Snapshotting Quantum Dynamics at Multiple Time Points
Pengfei Wang, Hyukjoon Kwon, Chun-Yang Luan +6
Measurement-induced state disturbance is a major challenge in obtaining quantum statistics at multiple time points. We propose a method to extract dynamic information from a quantu…
Observing frustrated quantum magnetism in two-dimensional ion crystals
Mu Qiao, Zhengyang Cai, Ye Wang +10
Two-dimensional (2D) quantum magnetism is a paradigm in strongly correlated many-body physics. The understanding of 2D quantum magnetism can be expedited by employing a controllabl…
Fast multi-qubit global-entangling gates without individual addressing of trapped ions
Kaizhao Wang, Jing-Fan Yu, Pengfei Wang +3
We propose and study ways speeding up of the entangling operations in the trapped ions system with high fidelity. First, we find a scheme to increase the speed of a two-qubit gate…
Significant-loophole-free test of Kochen-Specker contextuality using two species of atomic-ions
Pengfei Wang, Junhua Zhang, Chun-Yang Luan +7
Quantum measurements cannot be thought of as revealing preexisting results, even when they do not disturb any other measurement in the same trial. This feature is called contextual…
Single ion-qubit exceeding one hour coherence time
Pengfei Wang, Chun-Yang Luan, Mu Qiao +7
Realizing a long coherence time quantum memory is a major challenge of current quantum technology. Here, we report a single \Yb ion-qubit memory with over one hour coherence time,…
Double-EIT Ground-State Cooling of Stationary Two-Dimensional Ion Lattices
Mu Qiao, Ye Wang, Zhengyang Cai +6
We theoretically and experimentally investigate double electromagnetically induced transparency (double-EIT) cooling of two-dimensional ion crystals confined in a Paul trap. The do…
Realization of two-dimensional crystal of ions in a monolithic Paul trap
Ye Wang, Mu Qiao, Zhengyang Cai +9
We present a simple Paul trap that stably accommodates up to a couple of dozens of \ensuremath{^{171}\mathrm{Yb}^+~} ions in a stationary two-dimensional lattice. The trap is const…
Randomness expansion secured by quantum contextuality
Mark Um, Qi Zhao, Junhua Zhang +6
The output randomness from a random number generator can be certified by observing the violation of quantum contextuality inequalities based on the Kochen-Specker theorem. Contextu…
Frequency stabilization of a 650 nm laser to I spectrum for trapped Ba ions
Tian Xie, Naijun Jin, Ye Wang +4
The optical manipulation of Ba ions is mainly performed by a 493 nm laser for the S-P transition and a 650 nm laser for the P-D transition. Si…