Bound states of a converging quantum waveguide
نویسندگان
چکیده
منابع مشابه
Bound states in waveguides and bent quantum wires. I. Applications to waveguide systems
It has been shown that in quantum wires which contain bends there will be one or more bound states for electrons placed in such systems. Bound states have been observed in quantum wires, but detailed mapping of such states is difficult. However, there is a one-to-one correspondence between wave functions of free electrons in two-dimensional ~2D! systems, and electric fields of TE modes in recta...
متن کاملGravitational quantum states of neutrons in a rough waveguide
A theory of gravitational quantum states of ultracold neutrons in waveguides with absorbing/scattering walls is presented. The theory covers recent experiments in which the ultracold neutrons were beamed between a mirror and a rough scatterer/absorber. The analysis is based on a recently developed theory of quantum transport along random rough walls which is modified in order to include leaky (...
متن کاملBound states in photonic crystal waveguides and waveguide bends
We investigate the mechanism for the appearance of bound states in two-dimensional photonic crystal waveguides and contrast it with the corresponding mechanism for conventional guides. It is shown that the periodicity of the photonic crystal can give rise to frequency ranges above cutoff where no guided modes exist in the waveguides. Such mode gaps make possible the creation of bound states in ...
متن کاملBell states in a resonant quantum waveguide network
We show that a network of ballistic electron waveguides can generate entangled Bell-like states from separable states when it is resonant. The network we study is grouped into individual qudits sd=4d made up of pairs of waveguides. Rotation gates in the network produce coherent superpositions of qudit states. A Coulomb gate entangles the qudits. We construct a unitary matrix which characterizes...
متن کاملConstruction of quantum states with bound entanglement
We present a new family of bound-entangled quantum states in 3× 3 dimensions. Their density matrix ρ depends on 7 independent parameters and has 4 different non-vanishing eigenvalues. PACS 03.67.Hk, 03.65.Bz, 89.70.+c
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ESAIM: Mathematical Modelling and Numerical Analysis
سال: 2012
ISSN: 0764-583X,1290-3841
DOI: 10.1051/m2an/2012033