Linear optical scheme for implementing the universal and phase-covariant quantum cloning machines

2007 ◽  
Vol 366 (1-2) ◽  
pp. 36-41 ◽  
Author(s):  
XuBo Zou ◽  
Ke Li ◽  
GuangCan Guo
Keyword(s):  
Optical Scheme ◽  
Quantum Cloning ◽  
Covariant Quantum ◽  
Linear Optical

Realization of optimal symmetric universal and phase-covariant quantum cloning with quantum dot spins in cavity QED

2012 ◽  
Vol 59 (14) ◽  
pp. 1272-1277 ◽  
Author(s):  
Yan-Qiang Ji ◽  
Tao Yu ◽  
Ai-Dong Zhu ◽  
Hong-Fu Wang ◽  
Shou Zhang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Cavity Qed ◽  
Quantum Cloning ◽  
Covariant Quantum

Suboptimal asymmetric economical phase-covariant quantum cloning and telecloning in d-dimension

2007 ◽  
Vol 369 (1-2) ◽  
pp. 112-119 ◽  
Author(s):  
Wen-Hai Zhang ◽  
Jun Wang ◽  
Liu Ye ◽  
Jie-lin Dai
Keyword(s):  
Quantum Cloning ◽  
Covariant Quantum

IMPLEMENTING THE ECONOMICAL 1 → M PHASE-COVARIANT QUANTUM CLONING VIA THE DETECTION OF CAVITY DECAY

2010 ◽  
Vol 24 (04n05) ◽  
pp. 411-417
Author(s):  
ZHEN YANG ◽  
BAO-LONG FANG ◽  
HONG-BO WAN ◽  
LIU YE
Keyword(s):  
Spontaneous Emission ◽  
Optical Cavity ◽  
Success Probability ◽  
Quantum Cloning ◽  
Covariant Quantum ◽  
Output State ◽  
Cavity Decay ◽  
Automatic Feedback ◽  
M Phase ◽  
Approach Unity

We propose a scheme to realize the economical 1 → M phase-covariant quantum cloning in 2-dimension with M Λ-type three-level atoms in an optical cavity. In our scheme, we do not require addressing and exactly manipulating on every atoms, never so much as controlling the time of interaction between atoms and photon. The success or failure of cloning can be determined simply by detecting the polarization of the photon leaking out of the cavity. With the use of an automatic feedback, the success probability of the scheme can be made to approach unity. And the desired output state is a superposition of different combination of two grounds states and thus is free from decoherence caused by spontaneous emission.

Optimal symmetric economical phase-covariant quantum cloning

2007 ◽  
Vol 360 (6) ◽  
pp. 726-730 ◽  
Author(s):  
Wen-Hai Zhang ◽  
Long-Bao Yu ◽  
Liu Ye ◽  
Jie-Lin Dai
Keyword(s):  
Quantum Cloning ◽  
Covariant Quantum

Scheme for Implementation of Ancillary-Free 1 → 3 Optimal Phase-Covariant Quantum Cloning with Trapped Ions

2008 ◽  
Vol 49 (6) ◽  
pp. 1499-1501
Author(s):  
Yang Rong-Can ◽  
Li Hong-Cai ◽  
Lin Xiu ◽  
Huang Zhi-Ping ◽  
Xie Hong
Keyword(s):  
Trapped Ions ◽  
Quantum Cloning ◽  
Covariant Quantum
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