Semiconductor qubits for quantum computation
... Completely preventing decoherence is impossible ...
... Completely preventing decoherence is impossible ...
Semiconductor qubits for quantum computation
... Efficient solution of algorithms on a quantum computer with no efficient solution on a Turing machine? ...
... Efficient solution of algorithms on a quantum computer with no efficient solution on a Turing machine? ...
Quantification of Linear Entropy for Quantum Entanglement in He, H
... smaller estimated uncertainty in our calculation. For the hydrogen negative ion, we determine our result as L s = 0.106153 ± 0.000010. Again, with smaller estimated uncertainty, we believe our present value is also an improvement over other calculations, notwithstanding that no explicit numerical va ...
... smaller estimated uncertainty in our calculation. For the hydrogen negative ion, we determine our result as L s = 0.106153 ± 0.000010. Again, with smaller estimated uncertainty, we believe our present value is also an improvement over other calculations, notwithstanding that no explicit numerical va ...
Many-Electron States - cond
... enough: their characteristic traits give them individuality. It has therefore been argued that objects that cannot be distinguished must be identical, as Leibnitz did with his Principle of the Identity of Indiscernibles [1]. We might, however, imagine a replicator that could produce a perfect clone ...
... enough: their characteristic traits give them individuality. It has therefore been argued that objects that cannot be distinguished must be identical, as Leibnitz did with his Principle of the Identity of Indiscernibles [1]. We might, however, imagine a replicator that could produce a perfect clone ...
PHYSICAL SETTING CHEMISTRY
... different substances? (1) burning of propane (2) melting of NaCl(s) (3) deposition of CO2(g) (4) solidification of water ...
... different substances? (1) burning of propane (2) melting of NaCl(s) (3) deposition of CO2(g) (4) solidification of water ...
Reivelt, K., Vlassov, S. (2014) Quantum SpinOff Learning Station
... quantum dots are semiconductors whose electronic characteristics are closely related to the size and shape of the individual crystal. An immediate optical feature of quantum dots is their coloration – quantum dots of the same material but with different sizes can emit light of different colours. Gen ...
... quantum dots are semiconductors whose electronic characteristics are closely related to the size and shape of the individual crystal. An immediate optical feature of quantum dots is their coloration – quantum dots of the same material but with different sizes can emit light of different colours. Gen ...
The Free High School Science Texts: A Textbook for High School
... pictured the atom like a mini solar system where the electrons orbit the nucleus like planets orbiting around the sun. There were some problems with this model. For example it could not explain the very interesting observation that atoms only emit light at certain wavelengths or frequencies. Niels B ...
... pictured the atom like a mini solar system where the electrons orbit the nucleus like planets orbiting around the sun. There were some problems with this model. For example it could not explain the very interesting observation that atoms only emit light at certain wavelengths or frequencies. Niels B ...
letters - mceuen group
... Indications of approximate four-fold degeneracy have been observed in high-field measurements of electron addition spectra2–10 and inelastic cotunnelling4,10 in nanotube quantum dots. However, in previous experiments disorder-induced splitting of the orbital degeneracy and electron–electron interact ...
... Indications of approximate four-fold degeneracy have been observed in high-field measurements of electron addition spectra2–10 and inelastic cotunnelling4,10 in nanotube quantum dots. However, in previous experiments disorder-induced splitting of the orbital degeneracy and electron–electron interact ...
Here - UiO
... like a quantum gas, a gas where quantum mechanical effects are important. The quantum mechanical effect which we see on play here is the Pauli exclusion principle: Two fermions cannot occupy the same energy state. To understand this principle we need to dig even deeper into the quantum theory. Accor ...
... like a quantum gas, a gas where quantum mechanical effects are important. The quantum mechanical effect which we see on play here is the Pauli exclusion principle: Two fermions cannot occupy the same energy state. To understand this principle we need to dig even deeper into the quantum theory. Accor ...
CHEM 1405 Practice Exam #2
... 1) Which is the subatomic particle having a negligible mass and a negative charge? A) electron ...
... 1) Which is the subatomic particle having a negligible mass and a negative charge? A) electron ...
Conservation of Lateral Momentum in Heterostructure
... heterostructure barrier layer from emitter to collector resulting in evaporative cooling. In this paper a detailed theory of electron transport perpendicular to the multilayer superlattice structures is presented. Using Fermi-Dirac statistics, density-of-states for a finite quantum well and the quan ...
... heterostructure barrier layer from emitter to collector resulting in evaporative cooling. In this paper a detailed theory of electron transport perpendicular to the multilayer superlattice structures is presented. Using Fermi-Dirac statistics, density-of-states for a finite quantum well and the quan ...
112, 110404 (2014)
... External fields could, in analogy to 2D magnetic fields, be constructed to quench kinetics in one dimension, but the absence of kinetics in 1D flatbands would appear to rule out Luttinger-liquid behavior. In this Letter, we show that kinetics, fractionalized charge excitations, and other Luttinger-l ...
... External fields could, in analogy to 2D magnetic fields, be constructed to quench kinetics in one dimension, but the absence of kinetics in 1D flatbands would appear to rule out Luttinger-liquid behavior. In this Letter, we show that kinetics, fractionalized charge excitations, and other Luttinger-l ...
... 8 E rest L2 b 2 q 1,2,3... Since this is a 2-dimensional problem, there must be at least two quantum numbers which determine an energy state’s wave function and energy eigenvalue (one for each spatial coordinate). This is an important concept and has led us to find additional variables which ...
BODY PERTURBATIVE AND GREEN`S
... method is now frequently used in quantum chemistry. Treating the ionization process by means of MBPT, leads to Brueckner orbitals or maximum-overlap orbitals [4–6], while the GF technique leads to what is now known as Dyson orbitals [7, 8]. It has been known for quite some time that the Brueckner or ...
... method is now frequently used in quantum chemistry. Treating the ionization process by means of MBPT, leads to Brueckner orbitals or maximum-overlap orbitals [4–6], while the GF technique leads to what is now known as Dyson orbitals [7, 8]. It has been known for quite some time that the Brueckner or ...
Bose-Einstein Condensation in a gas
... + Vtrap (r) + dr0 Ψ̂†(r0 ,t) V(r0 −r) Ψ̂(r0 ,t) Ψ̂(r,t) . To first approximation, we will set Φ for Ψ̂. This is is justified since in BoseEinstein condensates,the condensate fraction can easily be above 90% (in contrast to ≈ 10% in 4 He superfluid). For ultra cold atoms, scattering mostly occurs in ...
... + Vtrap (r) + dr0 Ψ̂†(r0 ,t) V(r0 −r) Ψ̂(r0 ,t) Ψ̂(r,t) . To first approximation, we will set Φ for Ψ̂. This is is justified since in BoseEinstein condensates,the condensate fraction can easily be above 90% (in contrast to ≈ 10% in 4 He superfluid). For ultra cold atoms, scattering mostly occurs in ...
Valence Bond theory
... We want the beryllium atom to contribute one electron to each bond between Be and an H atom, but the 2s orbital of beryllium is full, with no unpaired electron. So what do we do? ...
... We want the beryllium atom to contribute one electron to each bond between Be and an H atom, but the 2s orbital of beryllium is full, with no unpaired electron. So what do we do? ...
Few-electron quantum dot circuit with integrated charge read out
... The problem is that the gates, used to deplete the dots, also strongly influence the tunnel barriers. Reducing the electron number would always lead to the Coulomb peaks becoming unmeasurably small, but not necessarily due to an empty double dot. The QPC detectors now permit us to compare charge and ...
... The problem is that the gates, used to deplete the dots, also strongly influence the tunnel barriers. Reducing the electron number would always lead to the Coulomb peaks becoming unmeasurably small, but not necessarily due to an empty double dot. The QPC detectors now permit us to compare charge and ...
Bohr model
In atomic physics, the Rutherford–Bohr model or Bohr model, introduced by Niels Bohr in 1913, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with attraction provided by electrostatic forces rather than gravity. After the cubic model (1902), the plum-pudding model (1904), the Saturnian model (1904), and the Rutherford model (1911) came the Rutherford–Bohr model or just Bohr model for short (1913). The improvement to the Rutherford model is mostly a quantum physical interpretation of it. The Bohr model has been superseded, but the quantum theory remains sound.The model's key success lay in explaining the Rydberg formula for the spectral emission lines of atomic hydrogen. While the Rydberg formula had been known experimentally, it did not gain a theoretical underpinning until the Bohr model was introduced. Not only did the Bohr model explain the reason for the structure of the Rydberg formula, it also provided a justification for its empirical results in terms of fundamental physical constants.The Bohr model is a relatively primitive model of the hydrogen atom, compared to the valence shell atom. As a theory, it can be derived as a first-order approximation of the hydrogen atom using the broader and much more accurate quantum mechanics and thus may be considered to be an obsolete scientific theory. However, because of its simplicity, and its correct results for selected systems (see below for application), the Bohr model is still commonly taught to introduce students to quantum mechanics or energy level diagrams before moving on to the more accurate, but more complex, valence shell atom. A related model was originally proposed by Arthur Erich Haas in 1910, but was rejected. The quantum theory of the period between Planck's discovery of the quantum (1900) and the advent of a full-blown quantum mechanics (1925) is often referred to as the old quantum theory.