scholarly journals One-step deterministic multipartite entanglement purification with linear optics

2012 ◽  
Vol 376 (4) ◽  
pp. 314-319 ◽  
Author(s):  
Yu-Bo Sheng ◽  
Gui Lu Long ◽  
Fu-Guo Deng
Keyword(s):  
Multipartite Entanglement ◽  
Linear Optics ◽  
Entanglement Purification ◽  
One Step

ERROR-REJECTING BENNETT–BRASSARD–MERMIN QUANTUM KEY DISTRIBUTION PROTOCOL BASED ON LINEAR OPTICS OVER A COLLECTIVE-NOISE CHANNEL

2010 ◽  
Vol 08 (07) ◽  
pp. 1141-1151 ◽  
Author(s):  
XI-HAN LI ◽  
XIAO-JIAO DUAN ◽  
FU-GUO DENG ◽  
HONG-YU ZHOU
Keyword(s):  
Quantum Entanglement ◽  
Quantum Key Distribution ◽  
Quantum Information Processing ◽  
Key Distribution ◽  
Entangled State ◽  
Collective Noise ◽  
Linear Optics ◽  
Entanglement Purification ◽  
Measurement Results ◽  
Entangled Quantum States

Quantum entanglement is an important element of quantum information processing. Sharing entangled quantum states between two remote parties is a precondition of most quantum communication schemes. We will show that the protocol proposed by Yamamoto et al. (Phys. Rev. Lett.95 (2005) 040503) for transmitting single quantum qubit against collective noise with linear optics is also suitable for distributing the components of entanglements with some modifications. An additional qubit is introduced to reduce the effect of collective noise, and the receiver can take advantage of the time discrimination and the measurement results of the assistant qubit to reconstruct a pure entanglement with the sender. Although the scheme succeeds probabilistically, the fidelity of the entangled state is almost unity in principle. The resource used in our protocol to get a pure entangled state is finite, which establishes entanglement more easily in practice than quantum entanglement purification. Also, we discuss its application in quantum key distribution over a collective channel in detail.

scholarly journals One-step generation of multipartite entanglement among nitrogen-vacancy center ensembles

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Wan-lu Song ◽  
Zhang-qi Yin ◽  
Wan-li Yang ◽  
Xiao-bo Zhu ◽  
Fei Zhou ◽  
...  
Keyword(s):  
Nitrogen Vacancy ◽  
Multipartite Entanglement ◽  
Nitrogen Vacancy Center ◽  
One Step ◽  
Step Generation ◽  
Vacancy Center

scholarly journals Feasible measurement-based entanglement purification in linear optics

2021 ◽  
Author(s):  
Yu-Bo Sheng ◽  
Wei Zhong ◽  
Peishun Yan ◽  
Lan Zhou
Keyword(s):  
Linear Optics ◽  
Entanglement Purification

Fast multi-copy entanglement purification with linear optics

2015 ◽  
Vol 24 (12) ◽  
pp. 120306 ◽  
Author(s):  
Chun Cai ◽  
Lan Zhou ◽  
Yu-Bo Sheng
Keyword(s):  
Linear Optics ◽  
Entanglement Purification
Sign in / Sign up

Export Citation Format

Share Document