Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of the Optical Society of America B

Implementation of two optimal symmetric economical state-dependent cloners in an ion-trap system

Gui-Yu Hu, Hong-Bo Wan, Liu Ye

Published Jan 22, 2010• 2 citations
Publisher

Abstract

We propose unified scheme to realize optimal 1→3 symmetric economical phase-covariant cloning (EPCC) and optimal 1→3 symmetric economical real state cloning (SERS) in the context of an ion-trap system. In this approach, the vibrational mode is not used to act as memory and the two cloners work without ancilla, thus it is likely to be much less sensitive to noise and decoherence. By adjusting tunable time parameters, our system can also perform optimal symmetric (asymmetric) universal quantum cloning and optimal symmetric (asymmetric) phase-covariant quantum cloning. Based on the advancement of experimental technique in an ion-trap system, the scheme is feasible and the symmetric economical state-dependent cloning is optimal.

DOI
10.1364/josab.27.000328

Related papers

Schemes to Implement the Optimal Asymmetric Economical 1→2 and 1→3 Phase-Covariant Cloning in Ion-Trap System

Ye Liu

We propose experimentally feasible schemes to implement the optimal asymmetric economical 1→2 and 1→3 phase-covariant cloning,which work without ancilla,in the context of ion-trap system.In these schemes the collective motional mode is initially prepared in the vacuum state |0.In the first scheme,we drive the first ion with a laser beam firstly,and then we map the motional mode state to the second ion.And in the second scheme,we drive two ions with different laser beams,and then we map the motional mode state to the third one.The schemes are based on resonant sideband excitation,thus they may be realized with current ion-trap techniques.

Acta Sinica Quantum Optica•Jan 1, 2009•0 citations

Tunable optimal quantum cloning machines with trapped atoms

Wei Xiong, Ye Liu

We propose a scheme to realize tunable optimal quantum cloning machines with trapped atoms. Through selecting a pairing of Raman transitions and choosing suitable parameters of the external fields, we can not only realize an optimal symmetric (asymmetric) universal quantum cloning machine and phase-covariant cloning machine, but also an optimal symmetric economical phase-covariant cloning machine. Additionally, the atomic excited states and photonic states can be adiabatically eliminated. In our scheme, the quantum cloning machine can copy the information from one trapped atom to arbitrary two distant trapped atoms, which is significant to quantum communication and quantum computation.

Journal of the Optical Society of America B•Apr 5, 2012•2 citations

Implementation of a quantum cloning machine via an ion-trap system

Tao Wu, Bao‐Long Fang, Liu Ye

We propose a scheme to realize a quantum cloning machine in an ion-trap system. In the scheme, the optimal 1→2 symmetric universal quantum cloning and the optimal 1→2 phase-covariant quantum cloning can be realized. The required experimental techniques of the scheme are in the range of what can be obtained in the ion-trap setup. Therefore, the scheme can be realized with presently available ion-trap techniques.

Journal of the Optical Society of America B•Sep 14, 2012•2 citations

Scheme for the Implementation of 1→2 Optimal Universal and Phase-covariant Quantum Cloning in Ion-trap Systems

Meng Fan

We propose a scheme which can simultaneously implement 1→ 2 optimal universal and phase-covariant quantum cloning in ion-trap systems.The required time for the whole procedure is short based on the resonant interaction,which is important in view of decoherence.Our scheme is feasible on the bases of present techniques.

Journal of Yanbian University•Jan 1, 2010•0 citations

Scheme to Implement Optimal Asymmetric Economical Phase-Covariant Quantum Cloning in Cavity QED

Wen‐Hai Zhang, Dai Jie-lin, Ye Liu

We propose an experimentally feasible scheme to implement the optimal asymmetric economical 1 → 2 phase-covariant quantum cloning in two dimensions based on the cavity QED technique. The protocol is very simple and only two atoms are required. Our scheme is insensitive to the cavity field states and cavity decay. During the processes, the cavity is only virtually excited and it thus greatly prolongs the efficient decoherent time. Therefore, it may be realized in experiment.

Communications in Theoretical Physics•Jun 1, 2008•2 citations

Implementing 1→M Phase-covariant Cloning via Preparing W State in Ion-trap System

Ai‐Dong Zhu

We present a scheme to implement 1→M phase-covariant cloning via preparing a W state in ion-trap system.In our protocol,the interactions between the N ions and the vibration mode are asymmetric.By adjusting the phases of the laser fields,a maximal fidelity can be reached.Throughout the whole procedure the vibration mode remains in the vacuum state and thus the decoherence can be suppressed effectively.

Journal of Yanbian University•Jan 1, 2009•0 citations
We propose unified scheme to realize optimal 1→3 symmetric economical phase-covariant cloning (EPCC) and optimal 1→3 symmetric economical real state cloning (SERS) in the context of an ion-trap system. In this approach, the vibrational mode is not used to act as memory and the two cloners work without ancilla, thus it is likely to be much less sensitive to noise and decoherence. By adjusting tunable time parameters, our system can also perform optimal symmetric (asymmetric) universal quantum cloning and optimal symmetric (asymmetric) phase-covariant quantum cloning. Based on the advancement of experimental technique in an ion-trap system, the scheme is feasible and the symmetric economical state-dependent cloning is optimal.
We propose experimentally feasible schemes to implement the optimal asymmetric economical 1→2 and 1→3 phase-covariant cloning,which work without ancilla,in the context of ion-trap system.In these schemes the collective motional mode is initially prepared in the vacuum state |0.In the first scheme,we drive the first ion with a laser beam firstly,and then we map the motional mode state to the second ion.And in the second scheme,we drive two ions with different laser beams,and then we map the motional mode state to the third one.The schemes are based on resonant sideband excitation,thus they may be realized with current ion-trap techniques.
We propose a scheme to realize tunable optimal quantum cloning machines with trapped atoms. Through selecting a pairing of Raman transitions and choosing suitable parameters of the external fields, we can not only realize an optimal symmetric (asymmetric) universal quantum cloning machine and phase-covariant cloning machine, but also an optimal symmetric economical phase-covariant cloning machine. Additionally, the atomic excited states and photonic states can be adiabatically eliminated. In our scheme, the quantum cloning machine can copy the information from one trapped atom to arbitrary two distant trapped atoms, which is significant to quantum communication and quantum computation.