356 citations · 782 across the 45 of their papers we have counts for
6 papers · 1 filter
Deleting a marked item from an unsorted database with a single query
Yang Liu, Gui Lu Long
In this Letter we present a quantum deletion algorithm that deletes a marked state from an unsorted database of items with only a single query. This algorithm achieves exponent…
Two-step Quantum Key Distribution Schemes Using Polarization and Frequency Doubly Entangled Photons
Chuan Wang, Wan-Ying Wang, Li Xiao +1
A two-step quantum key distribution protocol using frequency and polarization doubly entangled photons is proposed. In this protocol, information is encoded by a unitary operation…
Analytic Constructions of General n-Qubit Controlled Gates
Yang Liu, Gui Lu Long, Yang Sun
In this Letter, we present two analytic expressions that most generally simulate -qubit controlled- gates with standard one-qubit gates and CNOT gates using exponential and p…
Secure Reusable Base-String in Quantum Key Distribution
Kai Wen, Fu Guo Deng, Gui Lu Long
Protecting secure random key from eavesdropping in quantum key distribution protocols has been well developed. In this letter, we further study how to detect and eliminate eavesdro…
Multiple Entropy Measures for Multipartite Quantum Entanglement
Dan Liu, Xin Zhao, Gui Lu Long
A new entanglement measure, the multiple entropy measures (MEMS), is proposed to quantify quantum entanglement of multi-partite quantum state. The MEMS is vector-like with $m=[N/2]…
Creation of Entanglement between Two Electron Spins Induced by Many Spin Ensemble Excitations
Qing Ai, Yong Li, Guilu Long +1
We theoretically explore the possibility of creating spin entanglement by simultaneously coupling two electronic spins to a nuclear ensemble. By microscopically modeling the spin e…