The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We study the optimal control problem in a non-Markovian open quantum system. The quantum system of interest is coupled to its local environment, which is dissipative in nature and tends to decay the quantum system. Based on the non-Markovian master equation, we study the non-Markovian effects on the system dynamics. The non-Markovian environment has dual effects on the quantum system: the dissipation...
Precise results of eigenvalues can be obtained in order reduction approach for special modes. To improve calculation efficiency, the order reduction approach is analyzed in this paper. In the process of order reduction, every set made up of retained state variables is shared by different modes, which reduces calculation amount. Based on real number expression of complex matrix, the expression of outer...
In order to solve the problem of noises that were generated by operation on floating point representation (FPR) in genetic environment, and its influence on performance of genetic algorithm (GA), FPR genetic algorithm (FPRGA) denoising mutation based on wavelet decomposition (FPRGAWD) is presented by this paper. FPR noises were decomposed with Haar wavelet. The noises are mapped to Haar basis. The...
We propose a control approach to transfer the population between selected quantum states in the non-Markovian open quantum system. This transfers, assisted by single qubit phase shift operations can generate universal logic gates for quantum computing. We find that the occupation probability behaves differently for different environmental conditions, such as the temperature and the ratio between the...
The verifiably encrypted signature schemes proposed by Asokan solved the fairness problem in the fair exchange process. In the work, we propose an ID-based strong unforgeability verifiably encrypted signature scheme without random oracles, and show that the security of the scheme is based on the difficulty of solving the computational Diffie-Hellman problem. Our scheme is obtained from a modification...
The frequency offset between the transmitter and the receiver would severely impact the performance of orthogonal frequency division multiplexing (OFDM) system and must be compensated. One of effective sampling frequency synchronous algorithms was proposed by H. Shafiee; however, when this original synchronous algorithm is used to the OFDM system with a large number of sub-carriers, the existence...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.