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6 papers · 2 filters
Quantum Uncertainty and Error-Disturbance Tradeoff
Yu-Xiang Zhang, Shengjun Wu, Zeng-Bing Chen
The uncertainty principle is often interpreted by the tradeoff between the error of a measurement and the consequential disturbance to the followed ones, which originated long ago…
Quantum entropy-typical subspace and universal data compression
Jingliang Gao, Yanbo Yang
The quantum entropy-typical subspace theory is specified. It is shown that any mixed state with von Neumann entropy less than h can be preserved approximately by the entropy-typica…
Efficient quantum key distribution scheme with pre-announcing the basis
Jingliang Gao, Changhua Zhu, Heling Xiao
We devise a new quantum key distribution scheme that is more efficient than the BB84 protocol. By pre-announcing basis, Alice and Bob are more likely to use the same basis to prepa…
Quantum union bounds for sequential projective measurements
Jingliang Gao
We present two new quantum union bounds for sequential projective measurements. These bounds estimate the disturbance accumulation and probability of outcomes when the measurements…
Post-processing of the oblivious key in quantum private queries
Fei Gao, Bin Liu, Wei Huang +1
Quantum private query (QPQ) is a kind of quantum protocols to protect both users' privacy in their communication. There is an interesting example, that is, Alice wants to buy one i…
Heralded linear optical quantum Fredkin gate based on one auxiliary qubit and one single photon detector
Zhu Chang-Hua, Cao Xin, Quan Dong-Xiao +1
Linear optical quantum Fredkin gate can be applied to quantum computing and quantum multi-user communication network. In the existing linear optical scheme, two single photon detec…