Scheme for the implementation of the optimal economical phase-covariant quantum cloning machine with SQUID qubits in cavity QED

2007 ◽  
Vol 365 (1-2) ◽  
pp. 74-78 ◽  
Author(s):  
Long-Bao Yu ◽  
Wen-Hai Zhang ◽  
Liu Ye
Keyword(s):  
Cavity Qed ◽  
Quantum Cloning ◽  
Covariant Quantum

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

SCHEME TO IMPLEMENT GENERAL PHASE-COVARIANT QUANTUM CLONING

2006 ◽  
Vol 04 (05) ◽  
pp. 761-768
Author(s):  
WEN–HAI ZHANG ◽  
LIU YE ◽  
JIE-LIN DAI
Keyword(s):  
Cavity Qed ◽  
Cavity Field ◽  
Quantum Cloning ◽  
Covariant Quantum ◽  
Cavity Decay ◽  
General Phase

We propose an experimentally feasible scheme to implement the optimal general 1→2 phase-covariant quantum cloning machine based on cavity QED. In the scheme, the cavity is only virtually excited and thus the scheme is insensitive to the cavity field states and cavity decay.

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.

Quantum Cloning and Cavity QED

2004 ◽  
Vol 11 (04) ◽  
pp. 377-383
Author(s):  
Joanna González ◽  
Miguel Orszag
Keyword(s):  
Cavity Qed ◽  
Quantum Cloning

A Universal 1 → 2 Cloner is proposed using cavity QED. This is a deterministic proposal that takes far less steps than previous models, and makes use of dispersive C-NOT gates.

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
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