搜索结果: 1-7 共查到“低维物理 Quantum”相关记录7条 . 查询时间(0.109 秒)
Atomistic theory of spin relaxation in self-assembled In$_{1-x}$Ga$_x$As/GaAs quantum dots at zero magnetic field
Atomistic theory spin relaxation zero magnetic field
2010/11/25
We present full atomistic calculations of the spin-flip time (T1) of electrons and holes mediated by acoustic phonons in self-assembled In1−xGaxAs/GaAs quantum dots at zero magnetic field. At lo...
Quantum rotor theory of spinor condensates in tight traps
Quantum rotor theory of spinor condensates tight traps
2010/11/23
In this work, we theoretically construct exact mappings of many-particle bosonic systems onto
quantum rotor models. In particular, we analyze the rotor representation of spinor Bose-Einstein condensa...
Observation of exchange Coulomb interactions in the quantum Hall state at nu=3
exchange Coulomb interactions quantum Hall state
2010/11/19
Coulomb exchange interactions of electrons in the = 3 quantum Hall state are determined from
two inter-Landau level spin-flip excitations measured by resonant inelastic light scattering. The two co...
Effect of anisotropy on the field induced quantum critical properties of the three dimensional s=1/2 Heisenberg model
Effect of anisotropy field induced quantum critical properties
2010/11/18
The field induced quantum critical properties of the three dimensional spin-1/2 anisotropic antifer-romagnetic Heisenberg model has been studied. We have investigated the quantum phase transition betw...
Spin waves in magnetic quantum wells with Coulomb interaction and $sd$ exchange coupling
Spin waves magnetic quantum wells Coulomb interaction
2010/11/24
We theoretically describe the spin excitation spectrum of a two dimensional electron gas embedded in a quantum well with localized magnetic impurities. Compared to the previous work,
we introduce equ...
Quantum Destruction of Spiral Order in Two Dimensional Frustrated Magnets
Quantum Destruction Spiral Order Two Dimensional Frustrated Magnets
2010/11/25
We study the fate of S = 1/2 spiral ordered two dimensional quantum magnets when disordered
by quantum fluctuations. The topological point defects of the spiral, the Z2 vortices, play a crucial role ...
The RCCN criterion of separability for states in infinite-dimensional quantum systems
The RCCN criterion of separability states infinite-dimensional quantum systems
2010/10/18
In this paper, the realignment criterion and the RCCN criterion of separability for states in infinite-dimensional bipartite quantum systems are established. Let HA and HB be complex Hilbert spaces wi...