In this paper, we give an efficient physical realization of a double-slit duality quantum gate. Weak cross- Kerr nonlinearity is exploited here. The probability of success can reach 1/2. Asymmetrical slit duality cont...In this paper, we give an efficient physical realization of a double-slit duality quantum gate. Weak cross- Kerr nonlinearity is exploited here. The probability of success can reach 1/2. Asymmetrical slit duality control gate also can be constructed conveniently. The special quantum control gate could be realized easily in optical system by our current experimental technology.展开更多
We report the gate-modulated Raman spectrum of defective graphene. We show that the intensity of the D peak can be reversibly tuned by applying a gate voltage. This effect is attributed to chemical functionalization o...We report the gate-modulated Raman spectrum of defective graphene. We show that the intensity of the D peak can be reversibly tuned by applying a gate voltage. This effect is attributed to chemical functionalization of the graphene crystal lattice, generated by an electrochemical reaction involving the water layer trapped at the interface between silicon and graphene.展开更多
In this paper,we proposed a facile and accurate way for controlling multiplex fluorescent logic gates through changing the exciting and the observing wavelengths.As proof-of-principle,a Pb2+-specific DNAzyme probe and...In this paper,we proposed a facile and accurate way for controlling multiplex fluorescent logic gates through changing the exciting and the observing wavelengths.As proof-of-principle,a Pb2+-specific DNAzyme probe and a thymine(T)-rich DNA probe were introduced to a double-stranded(ds-)DNA.The addition style of the two ions served as the four inputs by changing the distance of the three fluorophores,6-carboxyfluorescein(FAM),ALEXA 532(ALEXA)and carboxytetramethylrhodamine(TAMRA),all of which were modified on the dsDNA probe.Compared with the previous methods,the present approach needed neither different inputs nor the change of sequence of the probe to achieve multiplex logic gates.Furthermore,the modularity of the strategy may allow it to be extended to other types of logic gates.展开更多
By employing an auxiliary cavity, we investigate the possibility to implement the conditional phase flip （CPF） gate on two atoms confined in separate 1ow-Q cavities by single-photon input-output process, based on th...By employing an auxiliary cavity, we investigate the possibility to implement the conditional phase flip （CPF） gate on two atoms confined in separate 1ow-Q cavities by single-photon input-output process, based on the Faraday rotation. This indicates a universal quantum computing available with sophisticated cavity QED techniques. As examples, we carry out generation of duster states of distant atomic qubits and accomplish a teleportation based on Bell-state measurement in low-Q cavities.展开更多
基金Supported by National Natural Science Foundation of China under Grant Nos.10775076 and 10874098the National Basic Research Program of China under Grant No.2009CB929402the Specialized Research Fund for the Doctoral Program of Education Ministry of China under Grant No.20060003048
文摘In this paper, we give an efficient physical realization of a double-slit duality quantum gate. Weak cross- Kerr nonlinearity is exploited here. The probability of success can reach 1/2. Asymmetrical slit duality control gate also can be constructed conveniently. The special quantum control gate could be realized easily in optical system by our current experimental technology.
文摘We report the gate-modulated Raman spectrum of defective graphene. We show that the intensity of the D peak can be reversibly tuned by applying a gate voltage. This effect is attributed to chemical functionalization of the graphene crystal lattice, generated by an electrochemical reaction involving the water layer trapped at the interface between silicon and graphene.
基金supported by the National Natural Science Foundation of China(21005026 and 21135001)the National Basic Research Program of China(2011CB911000)the Foundation for Innovative Research Groups of NSFC(21221003)
文摘In this paper,we proposed a facile and accurate way for controlling multiplex fluorescent logic gates through changing the exciting and the observing wavelengths.As proof-of-principle,a Pb2+-specific DNAzyme probe and a thymine(T)-rich DNA probe were introduced to a double-stranded(ds-)DNA.The addition style of the two ions served as the four inputs by changing the distance of the three fluorophores,6-carboxyfluorescein(FAM),ALEXA 532(ALEXA)and carboxytetramethylrhodamine(TAMRA),all of which were modified on the dsDNA probe.Compared with the previous methods,the present approach needed neither different inputs nor the change of sequence of the probe to achieve multiplex logic gates.Furthermore,the modularity of the strategy may allow it to be extended to other types of logic gates.
基金Supported by National Natural Science Foundation of China under Grant Nos.10774163,11104326,11004226,11174035National Basic Research Program of China(973Program)under Grant Nos.2011CB921803,2012CB921704China Postdoctoral Science Foundation Funded Project under Grant No.2012M510342
文摘By employing an auxiliary cavity, we investigate the possibility to implement the conditional phase flip （CPF） gate on two atoms confined in separate 1ow-Q cavities by single-photon input-output process, based on the Faraday rotation. This indicates a universal quantum computing available with sophisticated cavity QED techniques. As examples, we carry out generation of duster states of distant atomic qubits and accomplish a teleportation based on Bell-state measurement in low-Q cavities.
