Imaging electrostatically confined Dirac fermions in graphene
... but reflects them at larger angles of incidence1,4,5 . In a potential well with circular symmetry, electrons with high angular momenta are obliquely incident on the barrier and are internally reflected, thus leading to particle confinement and the formation of quasibound quantum dot states7–12 . As ...
... but reflects them at larger angles of incidence1,4,5 . In a potential well with circular symmetry, electrons with high angular momenta are obliquely incident on the barrier and are internally reflected, thus leading to particle confinement and the formation of quasibound quantum dot states7–12 . As ...
Classical analogy of Fano resonances
... We assume here that the inequality γ � ω0 holds for the oscillator parameters. In figure 1(a), it is shown that a resonance in |c(ω)| occurs as the frequency ω of the external force approaches to the natural frequency ω0 of the oscillator. At the resonance the amplitude of the oscillator takes the v ...
... We assume here that the inequality γ � ω0 holds for the oscillator parameters. In figure 1(a), it is shown that a resonance in |c(ω)| occurs as the frequency ω of the external force approaches to the natural frequency ω0 of the oscillator. At the resonance the amplitude of the oscillator takes the v ...
Quantum Mechanics (Part II)
... decades. By the mid-to-late 19th century, with the maturation of physical optics and electromagnetic theory, it seemed settled that light indeed behaved like a wave, but then in the early 20th century, in considering phenomena such as the photoelectric and Compton effects, it was found that light s ...
... decades. By the mid-to-late 19th century, with the maturation of physical optics and electromagnetic theory, it seemed settled that light indeed behaved like a wave, but then in the early 20th century, in considering phenomena such as the photoelectric and Compton effects, it was found that light s ...
Waves and Particles: Basic Concepts of Quantum
... How can a photon be described then? We use the analogy with the classical theory of waves introduced above (which we cannot use directly, since it does not consider the particle nature of light). In describing a photon (any particle, in fact), we introduce a wave function ψ(x, y, z, t). The wave fun ...
... How can a photon be described then? We use the analogy with the classical theory of waves introduced above (which we cannot use directly, since it does not consider the particle nature of light). In describing a photon (any particle, in fact), we introduce a wave function ψ(x, y, z, t). The wave fun ...
Introduction to Quantum Information and Computation for Chemistry
... of qubits could be in states of quantum superposition such as α00 |00 + α01 |01 + α10 |10 + α11 |11, a string of qubits is able to store several numbers α00 , α01 , . . . simultaneously, while a classical string of bits can only represent a single number. In this sense, n qubits encode not n bit ...
... of qubits could be in states of quantum superposition such as α00 |00 + α01 |01 + α10 |10 + α11 |11, a string of qubits is able to store several numbers α00 , α01 , . . . simultaneously, while a classical string of bits can only represent a single number. In this sense, n qubits encode not n bit ...
Quantum coding with finite resources
... can be used many times in sequence. In this case, the sender first encodes a quantum state into a sequence of registers and then sends them one by one through the channel to the receiver. The receiver collects these registers and then attempts to decode the quantum state. Equivalently, one considers ...
... can be used many times in sequence. In this case, the sender first encodes a quantum state into a sequence of registers and then sends them one by one through the channel to the receiver. The receiver collects these registers and then attempts to decode the quantum state. Equivalently, one considers ...
Phonon-like excitations in the two-state Bose
... spin-1 bosons where the multiplets of local states form the closely-spaced excited levels. It was shown in [21, 22] that MI-SF transition can be of the first order when a single-site spin interaction is of the antiferromagnetic type. A similar effect also takes place for multicomponent Bose system in ...
... spin-1 bosons where the multiplets of local states form the closely-spaced excited levels. It was shown in [21, 22] that MI-SF transition can be of the first order when a single-site spin interaction is of the antiferromagnetic type. A similar effect also takes place for multicomponent Bose system in ...
Quantum centipedes with strong global constraint
... the study of statistical-mechanical models of molecular spiders or centipedes whose configurations are those of a system with N legs that are all attached to vertices of a regular lattice, but can step to the nearest sites under certain constraints, which can be local or global. On a one-dimensional ...
... the study of statistical-mechanical models of molecular spiders or centipedes whose configurations are those of a system with N legs that are all attached to vertices of a regular lattice, but can step to the nearest sites under certain constraints, which can be local or global. On a one-dimensional ...