Undergraduate Quantum Chemistry Written by Jussi Eloranta
... 1. Particle character : A source for electrons (or photons) can be set up for suitably low intensity that the detector will see them one by one. Since we can count them, they must be particles. In the case of photons such experiment can be made using the single photon counting technique. The concept ...
... 1. Particle character : A source for electrons (or photons) can be set up for suitably low intensity that the detector will see them one by one. Since we can count them, they must be particles. In the case of photons such experiment can be made using the single photon counting technique. The concept ...
Spin-entangled electrons - Theoretical Physics at University of
... entangled spins could be used perform those quantum protocols and to test Bell’s inequalities and in a solid-state system. Since the use of entangled electron spin pairs in solid-state structures was theoretically proposed and analyzed (Burkard et al., 2000), there has been a growing activity aimed ...
... entangled spins could be used perform those quantum protocols and to test Bell’s inequalities and in a solid-state system. Since the use of entangled electron spin pairs in solid-state structures was theoretically proposed and analyzed (Burkard et al., 2000), there has been a growing activity aimed ...
Topological insulator with time
... Step 1, Write down the wavefunction (diagonalize the 2n×2n matrix Hamiltonian for an n-band model). Step 2, Choose the phase such that yk = Â s y y-k * , which is always possible because we have the time-reversal symmetry. Step 3, For a topological insulator, you will find that there is no way to de ...
... Step 1, Write down the wavefunction (diagonalize the 2n×2n matrix Hamiltonian for an n-band model). Step 2, Choose the phase such that yk = Â s y y-k * , which is always possible because we have the time-reversal symmetry. Step 3, For a topological insulator, you will find that there is no way to de ...
Cooling and Trapping Neutral Atoms
... potential that it reflects from the potential rather than being drawn into the surface. The usual model of quantum reflection treats the atom-surface interaction as a single atom in a potential. However, in a recent study of quantum reflection of Bose-Einstein condensates (BECs), the reflection prob ...
... potential that it reflects from the potential rather than being drawn into the surface. The usual model of quantum reflection treats the atom-surface interaction as a single atom in a potential. However, in a recent study of quantum reflection of Bose-Einstein condensates (BECs), the reflection prob ...
The AntIer-Townes effect revisited
... allowed spontaneous transitions between dressed states correspond to pairs of levels between which the atomic dipole moment operator d has a nonzero matrix element. ln the uncoupled basis, d, which cannot change the quantum number N, couples only Ib,N) and la, N). The two dressed states 11(N)) and 1 ...
... allowed spontaneous transitions between dressed states correspond to pairs of levels between which the atomic dipole moment operator d has a nonzero matrix element. ln the uncoupled basis, d, which cannot change the quantum number N, couples only Ib,N) and la, N). The two dressed states 11(N)) and 1 ...
![arXiv:1705.06742v1 [cond-mat.quant-gas] 18](http://s1.studyres.com/store/data/015536624_1-695304017ec91e58c90e68ba3242255c-300x300.png)
Multimode quantum memory based on atomic frequency combs
... rephase after a time 2 / ⌬, resulting in a photon-echo type coherent emission. A pair of control fields on 兩e典-兩s典 allows for long-time storage as a collective spin wave in 兩s典, and on-demand readout after a storage time Ts. ...
... rephase after a time 2 / ⌬, resulting in a photon-echo type coherent emission. A pair of control fields on 兩e典-兩s典 allows for long-time storage as a collective spin wave in 兩s典, and on-demand readout after a storage time Ts. ...
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.