Universal quantum control in two-electron spin quantum bits using
... with nanosecond operation times. We have used quantum state tomography to characterize the evolution of the qubit state around a continuously tunable combined axis. The magnetic filed gradient is internally generated using dynamic nuclear polarization of the underlying Ga and As nuclear sublattice. ...
... with nanosecond operation times. We have used quantum state tomography to characterize the evolution of the qubit state around a continuously tunable combined axis. The magnetic filed gradient is internally generated using dynamic nuclear polarization of the underlying Ga and As nuclear sublattice. ...
Basic Physical Principles of MRI
... MRI uses a combination of Magnetic and Electromagnetic Fields • NMR measures the net magnetization of atomic nuclei in the presence of magnetic fields • Magnetization can be manipulated by changing the magnetic field environment (static, gradient, and RF fields) • Static magnetic fields don’t chang ...
... MRI uses a combination of Magnetic and Electromagnetic Fields • NMR measures the net magnetization of atomic nuclei in the presence of magnetic fields • Magnetization can be manipulated by changing the magnetic field environment (static, gradient, and RF fields) • Static magnetic fields don’t chang ...
Optical and magneto-optical properties of UPtGe
... crystallographic directions for three single crystals cut perpendicular to the main axes. One clearly recognizes the particular behavior when the magnetic field is aligned parallel to the b axis. This singularity is also manifest in the dielectric function which was determined by optical ellipsometr ...
... crystallographic directions for three single crystals cut perpendicular to the main axes. One clearly recognizes the particular behavior when the magnetic field is aligned parallel to the b axis. This singularity is also manifest in the dielectric function which was determined by optical ellipsometr ...
Quantum mechanical model of atom, Orbitals and Quantum Numbers
... The energy value of orbital increases as its (n + l) value increases. for Ex: (n + l) value of 1S orbital is 1+0=1 and that of 2S orbital is 2+0=2.Hence energy of 1S<2S If two orbitals have the same value for (n + l), the orbital having lower n value is first filled. Ex: (n + l) value of 2p orbital ...
... The energy value of orbital increases as its (n + l) value increases. for Ex: (n + l) value of 1S orbital is 1+0=1 and that of 2S orbital is 2+0=2.Hence energy of 1S<2S If two orbitals have the same value for (n + l), the orbital having lower n value is first filled. Ex: (n + l) value of 2p orbital ...
Nucleus-mediated spin-flip transitions in GaAs quantum dots
... The electron spin states in bulk semiconductor and heterostructures have attracted much attention in recent years. Experiments indicate very long spin decoherence times and small transition rates between states of different spin.1–3 These promising results have motivated proposals for information pr ...
... The electron spin states in bulk semiconductor and heterostructures have attracted much attention in recent years. Experiments indicate very long spin decoherence times and small transition rates between states of different spin.1–3 These promising results have motivated proposals for information pr ...
Microsoft Word Format - University of Toronto Physics
... obtaining the resonance frequency may be used. As the resonance frequency is approached, the steady DC current decreases because the amount of light transmitted through the cell decreases. The reason for this is that at resonance the optically pumped mF = 2 state is depopulated by the rf and thus mo ...
... obtaining the resonance frequency may be used. As the resonance frequency is approached, the steady DC current decreases because the amount of light transmitted through the cell decreases. The reason for this is that at resonance the optically pumped mF = 2 state is depopulated by the rf and thus mo ...
Stark shift of an on-center donor binding energy
... impurities in GaAs/Al0:3Ga0:7As cylindrical quantum dots. It is found that contrary to what was expected based on the existing literature for growth-direction magnetic fields, the presence of a tilted field does not always contribute positively to the binding energy of surface impurities. The shape ...
... impurities in GaAs/Al0:3Ga0:7As cylindrical quantum dots. It is found that contrary to what was expected based on the existing literature for growth-direction magnetic fields, the presence of a tilted field does not always contribute positively to the binding energy of surface impurities. The shape ...
22mri
... the stable nuclei are even-even. In such nuclei spins of protons as well as spins of neutrons are oriented in opposite directions resulting in the total spin equal zero: ...
... the stable nuclei are even-even. In such nuclei spins of protons as well as spins of neutrons are oriented in opposite directions resulting in the total spin equal zero: ...
The Quantum Spin Hall Effect
... Experimental setup • High mobility samples of HgTe/CdTe quantum wells have been fabricated. • Because of the small band gap, about several meV, one can gate dope this system from n to p doped regimes. • Two tuning parameters, the thickness d of the quantum well, and the gate voltage. ...
... Experimental setup • High mobility samples of HgTe/CdTe quantum wells have been fabricated. • Because of the small band gap, about several meV, one can gate dope this system from n to p doped regimes. • Two tuning parameters, the thickness d of the quantum well, and the gate voltage. ...
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.