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62 papers · 1 filter
Bounded Luttinger liquids as a universality class of quantum critical behavior
Johannes Voit, Yupeng Wang, Marco Grioni
We show that one-dimensional quantum systems with gapless degrees of freedom and open boundary conditions form a new universality class of quantum critical behavior, which we propo…
Coulomb Drag Between Parallel Ballistic Quantum Wires
O. E. Raichev, P. Vasilopoulos
The Coulomb drag between parallel, {\it ballistic} quantum wires is studied theoretically in the presence of a perpendicular magnetic field B. The transresistance R_D shows peaks a…
Quantum-classical correspondence and nonclassical states generation in dissipative quantum optical systems
Kirill N. Alekseev, Natasha V. Alekseeva, Jan Perina
We develop a semiclassical method for the determination of the nonlinear dynamics of dissipative quantum optical systems in the limit of large number of photons N, based on the 1/N…
A Remark on the Optimal Cloning of An N-Level Quantum System
Sergio Albeverio, Shao-Ming Fei
We study quantum cloning machines (QCM) that act on an unknown N-level quantum state and make M copies. We give a formula for the maximum of the fidelity of cloning and exhibit the…
Effects of Multi-Surface Modification on Curie temperature of ferroelectric films
Xiao-Guang Wang, Shao-Hua Pan, Guo-Zhen Yang
Within the framework of mean field theory, we study the effects of multi-surface modification on Curie temperature of ferroelectric films using the transverse Ising model. The gene…
A New Direct Process to Prepare YBa2Cu3O7- films on Biaxially Textured Ag{110}<211>
Rongping Wang, Yueliang Zhou, Shaohua Pan +3
YBCO films were successfully prepared on biaxially textured Ag{110}<211> substrates by using pulsed laser deposition. X-ray diffraction results showed that the degree of preferenti…