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Tiny optical cavities could make quantum networks possible（图）
Tiny optical cavities quantum networks
2020/4/10
Engineers at Caltech have shown that atoms in optical cavities -- tiny boxes for light -- could lead to the creation of a quantum internet. Their National Science Foundation-funded work...
Molecule States in a Gate Tunable Graphene Double Quantum Dot
Molecule States Gate Tunable Graphene Double Quantum Dot
2010/11/25
We have measured a graphene double quantum dot device with multiple electrostatic gates that
are used to enhance control to investigate it. At low temperatures the transport measurements
reveal hone...
Electric-field Manipulation of the Lande' g Tensor of Holes in In0.5Ga0.5As/GaAs Self-assembled Quantum Dots
Electric-field Manipulation Self-assembled Quantum Dots
2010/11/25
The effect of an electric field on spin precession in In0.5Ga0.5As/GaAs self-assembled quantum
dots is calculated using multiband real-space envelope-function theory. The dependence of the Land´...
Group-III assisted catalyst-free growth of InGaAs nanowires and the formation of quantum dots
Group-III assisted catalyst-free growth InGaAs nanowires quantum dots
2010/11/25
Growth of GaAs and InxGa1xAs nanowires by the group-III assisted Molecular Beam Epitaxy growth method is studied in dependence of growth temperature, with the objective of maximizing the ind...
Weak localization, Aharonov-Bohm oscillations and decoherence in arrays of quantum dots
Weak localization Aharonov-Bohm oscillations decoherence
2010/11/24
Combining scattering matrix theory with non-linear σ-model and Keldysh technique we develop a
unified theoretical approach enabling one to non-perturbatively study the effect of electron-electron int...
Correlation- and Interference-Induced Suppression and Enhancement of Current in a two-level Quantum Dot
Correlation uppression Enhancement of Current
2010/11/24
Motivated by the recent discovery of a canyon of conductance suppression in a two-level equal spin quantum dot system [Nilsson et al. Phys. Rev. Lett. 104, 186804 (2010)] the transport through this sy...
Cotunneling effects in GaAs vertical double quantum dot
Cotunneling effects GaAs vertical double quantum dot
2010/11/24
Semiconductor quantum dots have been a subject of intensive investigation over last two
decades. One reason is the proposal [1] to use spin state of electron in a quantum dot as a
quantum bit of inf...
Quantum Incompressibility of a Freely Falling Hydrogen Atom in a Circular Rydberg State, and a Gravitationally-Induced Charge Separation Effect in Superconducting Systems
Quantum Hydrogen Atom Circular Rydberg State Gravitationally-Induced Charge Separation Effect
2010/12/21
Freely falling point-like objects converge toward the center of the Earth. Hence the gravitational field of the Earth is inhomogeneous, and possesses a tidal component. The free fall of an extended qu...
Rydberg state mediated quantum gates and entanglement of pairs of neutral atoms
Rydberg state mediated quantum gates entanglement pairs of neutral atoms
2010/11/9
Experiments performed within the last year have demonstrated Rydberg state mediated quantum gates and deterministic entanglement between pairs of trapped neutral atoms. These experiments validate ten ...
Prefect Transfer of Quantum States on Spin Chain with Dzyaloshinskii- Moriya interaction in inhomogeneous Magnetic field
XY Spin-Chain Teleportation Dzyaloshinskii-Moriya interaction
2010/10/29
In this work, we use the Hamiltonian of a modified Dzyaloshinskii-Moriya model and investigate the perfect transfer of the quantum state on the spin networks. In this paper, we calculate fidelity in w...