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Conductance of a quantum wire in the Wigner crystal regime
... At low temperature T ≪ J the model (13) to first approximation can be bosonized to the form (3) with position-dependent parameters uσ , Kσ and g1⊥ . At T → 0 we have Kσ = 1 and g1⊥ = 0, i.e., the Hamiltonian (3) can be viewed as the bosonized version of the XY model. Then we conclude from Eq. (14) t ...
... At low temperature T ≪ J the model (13) to first approximation can be bosonized to the form (3) with position-dependent parameters uσ , Kσ and g1⊥ . At T → 0 we have Kσ = 1 and g1⊥ = 0, i.e., the Hamiltonian (3) can be viewed as the bosonized version of the XY model. Then we conclude from Eq. (14) t ...
Quantum Hall Plateau Transitions in Disordered Superconductors
... binding model with random nearest-neighbor hopping was shown [12] to have a delocalization transition and divergent density of states at the band center, the energy invariant under the sublattice symmetry. In this paper, we study a new delocalization transition in two dimensions that combines both o ...
... binding model with random nearest-neighbor hopping was shown [12] to have a delocalization transition and divergent density of states at the band center, the energy invariant under the sublattice symmetry. In this paper, we study a new delocalization transition in two dimensions that combines both o ...
NEW INFRARED NOBLE GAS LASER TRANSITIONS BETWEEN 3y
... the laser is considered advisable in order to reduce possibilities of contamination by the backstreaming oil. The cryogenic pump is used to bring the pressure of the laser down to roughly 0.5y and the ion pumps are then used to bring the pressure down to about 10 ...
... the laser is considered advisable in order to reduce possibilities of contamination by the backstreaming oil. The cryogenic pump is used to bring the pressure of the laser down to roughly 0.5y and the ion pumps are then used to bring the pressure down to about 10 ...
Fractional topological insulators
... For the “Integer topological insulator” – yes For the fractional – more difficult, since the charge e* cannot change without the gap closing. The answer: If 1/e* is odd – yes. ...
... For the “Integer topological insulator” – yes For the fractional – more difficult, since the charge e* cannot change without the gap closing. The answer: If 1/e* is odd – yes. ...
Phys. Rev. B 76, 035315 (2007) - Petta Group
... and charge-based decay in experiments involving the socalled spin blockade, in which a simultaneous spin flip and charge transition is required for electrons to tunnel from one dot to another.20 Consistent with the experiments, we find that blockade is reduced near zero magnetic field over a range s ...
... and charge-based decay in experiments involving the socalled spin blockade, in which a simultaneous spin flip and charge transition is required for electrons to tunnel from one dot to another.20 Consistent with the experiments, we find that blockade is reduced near zero magnetic field over a range s ...
Weak ferromagnetism and magnetoelectric coupling in
... along the 关111兴 axis兲, L, and M build up a right-handed system. Indeed, if we start our calculation with a spin configuration in which the magnetic moments are canted in the wrong direction 共so that D, L, and M make up a left-handed system兲 the moments relax back into the right-handed configuration ...
... along the 关111兴 axis兲, L, and M build up a right-handed system. Indeed, if we start our calculation with a spin configuration in which the magnetic moments are canted in the wrong direction 共so that D, L, and M make up a left-handed system兲 the moments relax back into the right-handed configuration ...
Entanglement in a solid-state spin ensemble
... the presence of finite entanglement. The results of this tomography process are shown in Fig. 3. The fidelity of the measured density matrix with respect to the target state, given that a 5 0.217, is 98.2(2)%, and is 68(2)% with respect to an ideal Bell state (a 5 0). To obtain the uncertainty in th ...
... the presence of finite entanglement. The results of this tomography process are shown in Fig. 3. The fidelity of the measured density matrix with respect to the target state, given that a 5 0.217, is 98.2(2)%, and is 68(2)% with respect to an ideal Bell state (a 5 0). To obtain the uncertainty in th ...
Nitrogen-vacancy center
The nitrogen-vacancy center (N-V center) is one of numerous point defects in diamond. Its most explored and useful property is photoluminescence, which can be easily detected from an individual N-V center, especially those in the negative charge state (N-V−). Electron spins at N-V centers, localized at atomic scales, can be manipulated at room temperature by applying a magnetic field, electric field, microwave radiation or light, or a combination, resulting in sharp resonances in the intensity and wavelength of the photoluminescence. These resonances can be explained in terms of electron spin related phenomena such as quantum entanglement, spin-orbit interaction and Rabi oscillations, and analysed using advanced quantum optics theory. An individual N-V center can be viewed as a basic unit of a quantum computer, and it has potential applications in novel, more efficient fields of electronics and computational science including quantum cryptography and spintronics.