371 citations · 1.4k across the 37 of their papers we have counts for
7 papers · 1 filter
Multiple phase estimation for arbitrary pure states under white noise
Yao Yao, Li Ge, Xing Xiao +2
In any realistic quantum metrology scenarios, the ultimate precision in the estimation of parameters is limited not only by the so-called Heisenberg scaling, but also the environme…
Distribution of quantum Fisher information in asymmetric cloning machines
Xing Xiao, Yao Yao, Lei-Ming Zhou +1
An unknown quantum state cannot be copied on demand and broadcast freely due to the famous no-cloning theorem. Approximate cloning schemes have been proposed to achieve the optimal…
Multiple phase estimation in quantum cloning machines
Yao Yao, Li Ge, Xing Xiao +2
Since the initial discovery of the Wootters-Zurek no-cloning theorem, a wide variety of quantum cloning machines have been proposed aiming at imperfect but optimal cloning of quant…
Proof-of-principle experiment of reference-frame-independent quantum key distribution with phase coding
Wen-Ye Liang, Shuang Wang, Hong-Wei Li +6
We have demonstrated a proof-of-principle experiment of reference-frame-independent phase coding quantum key distribution (RFI-QKD) over an 80-km optical fiber. After considering t…
Renormalized quantum Fisher information manifestation of Berezinskii-Kosterlitz-Thouless phase transition for spin-1/2 XXZ chain
Qiang Zheng, Yao Yao, Xun-Wei Xu +1
Combining the ideas of quantum Fisher information and quantum renormalization group method, the Berezinskii-Kosterlitz-Thouless quantum phase transition of spin- 1/2 XXZ chain is i…
Optimal quantum parameter estimation of two interacting qubits under decoherence
Zheng Qiang, Yao Yao, Yong Li
We investigate the parameter estimation problem in a two-qubit system, in which each qubit is independently interacting with its Markovian environment. We study in detail the sensi…
Quantum fisher information in noninertial frames
Yao Yao, Xing Xiao, Li Ge +2
We investigate the performance of quantum fisher information under the Unruh-Hawking effect, where one of the observers (eg, Rob) is uniformly accelerated with respect to other par…