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学者姓名：陈美锋
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Abstract ：
We propose a potentially practical scheme for preparing three-dimensional entanglement between a single atom and an atomic ensemble via quantum Zeno dynamics. Only one step operation is needed to obtain the three-dimensional entanglement, which reduces the complexity in experiment. We discuss how the parameter fluctuations and the decoherence impact on the fidelity of the three-dimensional entanglement through numerical simulation. The numerical simulations clearly demonstrate that the presented scheme is robust against the fluctuations of some experimental parameters and insensitive to the cavity decay and the fiber loss. Within the currently available technology, we also give a discussion on the experimental feasibility of the proposed scheme. (C) 2015 Elsevier B.V. All rights reserved.
Keyword ：
Atomic ensemble Atomic ensemble Cavity QED Cavity QED Quantum Zeno dynamics Quantum Zeno dynamics Three-dimensional entanglement Three-dimensional entanglement
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| GB/T 7714 | Chen, Yong-Fa , Chen, Mei-Feng . One-step generation of three-dimensional entanglement between a single atom and an atomic ensemble via quantum Zeno dynamics [J]. | OPTICS COMMUNICATIONS , 2016 , 364 : 29-36 . |
| MLA | Chen, Yong-Fa 等. "One-step generation of three-dimensional entanglement between a single atom and an atomic ensemble via quantum Zeno dynamics" . | OPTICS COMMUNICATIONS 364 (2016) : 29-36 . |
| APA | Chen, Yong-Fa , Chen, Mei-Feng . One-step generation of three-dimensional entanglement between a single atom and an atomic ensemble via quantum Zeno dynamics . | OPTICS COMMUNICATIONS , 2016 , 364 , 29-36 . |
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Abstract ：
Based on the quantum Zeno dynamics, a scheme is presented to implement a Toffoli gate of three separated superconducting qubits (SQs) by one step. Three separated SQs are connected by two resonators. The scheme is insensitive to the resonator decay because the Zeno subspace does not include the state of the resonators being excited. Numerical simulations indicate that the scheme is robust to the fluctuation of the parameters and the Toffoli gate can be implemented with high fidelity.
Keyword ：
Quantum Zeno dynamics Quantum Zeno dynamics Superconducting qubits Superconducting qubits Toffoli gate Toffoli gate
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| GB/T 7714 | Chen, Mei-Feng , Chen, Yong-Fa , Ma, Song-She . One-step implementation of a Toffoli gate of separated superconducting qubits via quantum Zeno dynamics [J]. | QUANTUM INFORMATION PROCESSING , 2016 , 15 (4) : 1469-1483 . |
| MLA | Chen, Mei-Feng 等. "One-step implementation of a Toffoli gate of separated superconducting qubits via quantum Zeno dynamics" . | QUANTUM INFORMATION PROCESSING 15 . 4 (2016) : 1469-1483 . |
| APA | Chen, Mei-Feng , Chen, Yong-Fa , Ma, Song-She . One-step implementation of a Toffoli gate of separated superconducting qubits via quantum Zeno dynamics . | QUANTUM INFORMATION PROCESSING , 2016 , 15 (4) , 1469-1483 . |
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We propose an efficient scheme to prepare W state of superconducting (SC) qubits in spatially separated coplanar waveguide (CPW) resonators via adiabatic passage. The CPW resonators, each trapping a SC qubit, are coupled only by a superconducting coupler (SCC) qubit. Based on a circuit quantum electrodynamics system, our scheme can be controlled and implemented easily in experiment. As a model of a plurality of separated cavities coupled to a SCC qubit, our protocol can be useful in scalable distributed quantum networks. By introducing adiabatic passage into our model, there is no need to control the Rabi frequency of classical field and the interaction time precisely during the whole operation. Also, the dissipation from the resonators and the energy relaxation can be omitted approximately.
Keyword ：
Adiabatic technology Adiabatic technology Circuit quantum electrodynamics (QED) Circuit quantum electrodynamics (QED) W entangled state W entangled state
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| GB/T 7714 | Wei, Xin , Chen, Mei-Feng . Preparation of multi-qubit W states in multiple resonators coupled by a superconducting qubit via adiabatic passage [J]. | QUANTUM INFORMATION PROCESSING , 2015 , 14 (7) : 2419-2433 . |
| MLA | Wei, Xin 等. "Preparation of multi-qubit W states in multiple resonators coupled by a superconducting qubit via adiabatic passage" . | QUANTUM INFORMATION PROCESSING 14 . 7 (2015) : 2419-2433 . |
| APA | Wei, Xin , Chen, Mei-Feng . Preparation of multi-qubit W states in multiple resonators coupled by a superconducting qubit via adiabatic passage . | QUANTUM INFORMATION PROCESSING , 2015 , 14 (7) , 2419-2433 . |
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Abstract ：
We propose a potentially practical scheme for creating entanglement between two atomic ensembles in two coupled cavities via adiabatic passage. The three-level Lambda-type atoms in each ensemble dispersively interact with the nonresonant classical field and cavity mode. By choosing appropriate parameters of the system, the effective Hamiltonian describes two atomic ensembles interact with "the same cavity mode" and has a dark state. Consequently, the entanglement between the two ensembles is gained via adiabatic passage. Numerical calculations show that the scheme is robust against moderate fluctuations of the experimental parameters. In addition, the effect of decoherence can be suppressed effectively. (C) 2014 Elsevier B.V. All rights reserved.
Keyword ：
Atomic ensemble Atomic ensemble Cavity QED Cavity QED Entanglement Entanglement
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| GB/T 7714 | Zhang, Chun-Ling , Chen, Mei-Feng . Entanglement of two atomic ensembles in coupled cavities via adiabatic passage [J]. | OPTICS COMMUNICATIONS , 2015 , 339 : 61-65 . |
| MLA | Zhang, Chun-Ling 等. "Entanglement of two atomic ensembles in coupled cavities via adiabatic passage" . | OPTICS COMMUNICATIONS 339 (2015) : 61-65 . |
| APA | Zhang, Chun-Ling , Chen, Mei-Feng . Entanglement of two atomic ensembles in coupled cavities via adiabatic passage . | OPTICS COMMUNICATIONS , 2015 , 339 , 61-65 . |
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Abstract ：
We propose a potentially practical scheme to generate a W state of N superconducting qubits (SQs) placed, respectively, in N separated transmission-line resonators (TLRs) which are coupled by a superconducting coupler qubit (SCQ). In our scheme, there is no need to apply any classical driving pulses during the whole operation process. The interaction between the SQs (SCQ) and the TLRs is resonant and the strong coupling between the SQs and the TLRs can be readily achieved, as a consequence the whole entanglement time is very short and we can obtain a high fidelity. Moreover, by using a SCQ as coupler qubit, our scheme can be controlled and implemented easily in experiment. The superconducting system is easy to be integrated, therefore our proposal can be useful in scalable distributed quantum networks.
Keyword ：
Circuit quantum electrodynamics(CQED) Circuit quantum electrodynamics(CQED) W entangled state W entangled state
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| GB/T 7714 | Wei, Xin , Chen, Mei-Feng . Generation of N-Qubit W State in N Separated Resonators via Resonant Interaction [J]. | INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS , 2015 , 54 (3) : 812-820 . |
| MLA | Wei, Xin 等. "Generation of N-Qubit W State in N Separated Resonators via Resonant Interaction" . | INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS 54 . 3 (2015) : 812-820 . |
| APA | Wei, Xin , Chen, Mei-Feng . Generation of N-Qubit W State in N Separated Resonators via Resonant Interaction . | INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS , 2015 , 54 (3) , 812-820 . |
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Abstract ：
We propose a new approach for quantum state transfer (QST) between atomic ensembles separately trapped in two distant cavities connected by an optical fiber via adiabatic passage. The three-level L-type atoms in each ensemble dispersively interact with the nonresonant classical field and cavity mode. By choosing appropriate parameters of the system, the effective Hamiltonian describes two atomic ensembles interacting with "the same cavity mode" and has a dark state. Consequently, the QST between atomic ensembles can be implemented via adiabatic passage. Numerical calculations show that the scheme is robust against moderate fluctuations of the experimental parameters. In addition, the effect of decoherence can be suppressed effectively. The idea provides a scalable way to an atomic-ensemble-based quantum network, which may be reachable with currently available technology.
Keyword ：
atomic ensemble atomic ensemble cavity QED cavity QED quantum state transfer quantum state transfer
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| GB/T 7714 | Zhang Chun-Ling , Chen Mei-Feng . Quantum state transfer between atomic ensembles trapped in separate cavities via adiabatic passage [J]. | CHINESE PHYSICS B , 2015 , 24 (7) . |
| MLA | Zhang Chun-Ling 等. "Quantum state transfer between atomic ensembles trapped in separate cavities via adiabatic passage" . | CHINESE PHYSICS B 24 . 7 (2015) . |
| APA | Zhang Chun-Ling , Chen Mei-Feng . Quantum state transfer between atomic ensembles trapped in separate cavities via adiabatic passage . | CHINESE PHYSICS B , 2015 , 24 (7) . |
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Abstract ：
We propose a way to prepare W state among atomic ensembles via stimulated Raman adiabatic passage (STIRAP) technique. The atomic ensembles are trapped in spatially separated cavities collectively linked to another cavity trapping a single atom by optical fibers. Our strictly numerical simulations show that, the atomic spontaneous emission, the cavity decay and the fiber loss are efficiently suppressed by the engineering adiabatic passage. The method can be generalized to prepare W state among any number of atomic ensembles. We believe that our proposal will promote development of quantum teleportation, especially quantum state engineering of multi-target-qubit collectively controlled by a qubit. (C) 2013 Elsevier B.V. All rights reserved.
Keyword ：
Atomic ensemble Atomic ensemble Cavity QED Cavity QED STIRAP STIRAP W state W state
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| GB/T 7714 | Zhang, Chun-Ling , Li, Wen-Zhang , Chen, Mei-Feng . Preparation of W state among spatially separated atomic ensembles collectively controlled by a single atom via adiabatic passage [J]. | OPTICS COMMUNICATIONS , 2014 , 311 : 301-306 . |
| MLA | Zhang, Chun-Ling 等. "Preparation of W state among spatially separated atomic ensembles collectively controlled by a single atom via adiabatic passage" . | OPTICS COMMUNICATIONS 311 (2014) : 301-306 . |
| APA | Zhang, Chun-Ling , Li, Wen-Zhang , Chen, Mei-Feng . Preparation of W state among spatially separated atomic ensembles collectively controlled by a single atom via adiabatic passage . | OPTICS COMMUNICATIONS , 2014 , 311 , 301-306 . |
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Abstract ：
We propose a scheme for generation of the W state and the Greenberger-Horn-Zeilinger (GHZ) state of atomic ensembles. The scheme is based on the dynamics of a single control atom and atomic ensembles interacting with a nonresonant cavity mode. By choosing the appropriate parameters, the effective Hamiltonian describing the interaction between the control atom and the atomic modes shows complete analogy with the Jaynes-Cummings Hamiltonian. The required time for preparing the W state (GHZ state) keeps unchanged (increases linearly) with the increase of the number of atomic ensembles. The effects of dissipation and the detuning between the atomic modes and the control atom on the prepared states are analyzed by numerical simulation. (C) 2013 Elsevier B.V. All rights reserved.
Keyword ：
Atomic ensemble Atomic ensemble Cavity QED Cavity QED GHZ state GHZ state W state W state
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| GB/T 7714 | Zhang, Chun-Ling , Li, Wen-Zhang , Chen, Mei-Feng . Generation of W state and GHZ state of multiple atomic ensembles via a single atom in a nonresonant cavity [J]. | OPTICS COMMUNICATIONS , 2014 , 312 : 269-274 . |
| MLA | Zhang, Chun-Ling 等. "Generation of W state and GHZ state of multiple atomic ensembles via a single atom in a nonresonant cavity" . | OPTICS COMMUNICATIONS 312 (2014) : 269-274 . |
| APA | Zhang, Chun-Ling , Li, Wen-Zhang , Chen, Mei-Feng . Generation of W state and GHZ state of multiple atomic ensembles via a single atom in a nonresonant cavity . | OPTICS COMMUNICATIONS , 2014 , 312 , 269-274 . |
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A scheme is proposed to generate the W state and NOON state for the collective molecular modes of distant polar molecules ensembles via a triple hybrid device. Through the virtual excitation of the microwave photons of the transmission-line resonators, the interaction between the superconducting charge qubit and the polar molecules induces the entanglement for the collective modes of the polar molecules. The enhanced effective coupling strength between the superconducting charge qubit and the polar molecules enables to generate the W state and NOON state with high fidelity. (C) 2013 Elsevier B.V. All rights reserved.
Keyword ：
NOON state NOON state Polar molecules ensembles Polar molecules ensembles Triple hybrid device Triple hybrid device W state W state
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| GB/T 7714 | Chen, Mei-Feng , Zhang, Chun-Ling , Ma, Song-She . Generation of W state and NOON state of distant polar molecules ensembles via a triple hybrid device [J]. | OPTICS COMMUNICATIONS , 2013 , 306 : 21-25 . |
| MLA | Chen, Mei-Feng 等. "Generation of W state and NOON state of distant polar molecules ensembles via a triple hybrid device" . | OPTICS COMMUNICATIONS 306 (2013) : 21-25 . |
| APA | Chen, Mei-Feng , Zhang, Chun-Ling , Ma, Song-She . Generation of W state and NOON state of distant polar molecules ensembles via a triple hybrid device . | OPTICS COMMUNICATIONS , 2013 , 306 , 21-25 . |
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Abstract ：
We propose a scheme to generate a Greenberger-Horn-Zeilinger (GHZ) state of four atoms trapped in a two-mode optical cavity via an adiabatic passage. The scheme is robust against moderate fluctuations of the experimental parameters. Numerical calculations show that the excited probabilities of both the cavity modes and the atoms are tiny and depend on the pulse peaks of the classical laser fields. For certain decoherence due to the atomic spontaneous emission and the cavity decay, there exits a range of pulse peaks to get a high fidelity.
Keyword ：
adiabatic passage adiabatic passage cavity quantum electrodynamics cavity quantum electrodynamics Greenberger-Horn-Zeilinger (GHZ) state Greenberger-Horn-Zeilinger (GHZ) state
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| GB/T 7714 | Zhang Chun-Ling , Chen Mei-Feng . Generation of four-atom Greenberger-Horn-Zeilinger state via adiabatic passage [J]. | CHINESE PHYSICS B , 2013 , 22 (5) . |
| MLA | Zhang Chun-Ling 等. "Generation of four-atom Greenberger-Horn-Zeilinger state via adiabatic passage" . | CHINESE PHYSICS B 22 . 5 (2013) . |
| APA | Zhang Chun-Ling , Chen Mei-Feng . Generation of four-atom Greenberger-Horn-Zeilinger state via adiabatic passage . | CHINESE PHYSICS B , 2013 , 22 (5) . |
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