Suppression of Shot Noise in Quantum Point Contacts in the... A. Golub, T. Aono, and Yigal Meir
... density-functional calculations that reveal the formation of a quasibound state at the QPC [9], the tunneling of a second electron through that state is suppressed by Coulomb interactions, and is enhanced at low temperatures by the Kondo effect [10]. Thus, at temperatures larger than the Kondo tempe ...
... density-functional calculations that reveal the formation of a quasibound state at the QPC [9], the tunneling of a second electron through that state is suppressed by Coulomb interactions, and is enhanced at low temperatures by the Kondo effect [10]. Thus, at temperatures larger than the Kondo tempe ...
Chapter 1 Review of Quantum Mechanics
... where f is the total force acting on the particle. If the initial condition (r (0) , p (0)) is given, one can from the above equation determine completely the particle’s motion (r (t) , p (t)) at any later time. An equivalent description is provided by Hamiltonian formalism. Hamiltonian of a particl ...
... where f is the total force acting on the particle. If the initial condition (r (0) , p (0)) is given, one can from the above equation determine completely the particle’s motion (r (t) , p (t)) at any later time. An equivalent description is provided by Hamiltonian formalism. Hamiltonian of a particl ...
5. Elements of quantum electromagnetism 5.1. Classical Maxwell
... obtains by imposing supplemental conditions that are known as gauge conditions. For the Coulomb gauge, the condition is ∇x ⋅A(x,t) = 0. Then, the vector A turns into a transverse vector A⊥ that is perpendicular to the propagation vector k. By taking φ0(x,t)=0 we have the electromagnetic gauge. In th ...
... obtains by imposing supplemental conditions that are known as gauge conditions. For the Coulomb gauge, the condition is ∇x ⋅A(x,t) = 0. Then, the vector A turns into a transverse vector A⊥ that is perpendicular to the propagation vector k. By taking φ0(x,t)=0 we have the electromagnetic gauge. In th ...
Isometric and unitary phase operators: explaining the Villain transform
... limit of the field under which a suitably defined average number of photons tends to infinity while the photon density remains fixed. In the present paper we introduce a phase operator formalism for quantum spins that, through suitable limits, is related to both the work of Guérin et al [6] and cla ...
... limit of the field under which a suitably defined average number of photons tends to infinity while the photon density remains fixed. In the present paper we introduce a phase operator formalism for quantum spins that, through suitable limits, is related to both the work of Guérin et al [6] and cla ...
ppt
... Uncertainty principle question Suppose an electron is inside a box 1 nm in width. There is some uncertainty in the momentum of the electron. We then squeeze the box to make it 0.5 nm. What happens to the momentum uncertainty? ...
... Uncertainty principle question Suppose an electron is inside a box 1 nm in width. There is some uncertainty in the momentum of the electron. We then squeeze the box to make it 0.5 nm. What happens to the momentum uncertainty? ...
Adiabatic.Quantum.Slow.Altshuler
... When N the gaps decrease even quicker than exponentially ...
... When N the gaps decrease even quicker than exponentially ...
PDF
... Some authors substitute the term quantum groupoid for a weak Hopf algebra. Therefore, the weak Hopf algebra is considered by some authors as an important concept in quantum operator algebra (QOA). ...
... Some authors substitute the term quantum groupoid for a weak Hopf algebra. Therefore, the weak Hopf algebra is considered by some authors as an important concept in quantum operator algebra (QOA). ...
All forces arise from the interactions between different objects
... one another, each one a special case of some more fundamental theory, of which there is only one. These theories are related by transformations that are called dualities. This means that any one theory can be converted in some way so that it ends up like another theory. The two theories are said to ...
... one another, each one a special case of some more fundamental theory, of which there is only one. These theories are related by transformations that are called dualities. This means that any one theory can be converted in some way so that it ends up like another theory. The two theories are said to ...
Quantum computing with nanoscale infrastructure
... with the title There’s Plenty of Room at the Bottom in which he pointed to the possibility of manipulating the quantum behaviour of single atoms. This is exactly what is done today, fifty years later, in ion trap quantum ‘computers’. In ion traps, a few research groups in the world are able to colle ...
... with the title There’s Plenty of Room at the Bottom in which he pointed to the possibility of manipulating the quantum behaviour of single atoms. This is exactly what is done today, fifty years later, in ion trap quantum ‘computers’. In ion traps, a few research groups in the world are able to colle ...
JEST PHYSICS - SAMPLE THEORY
... According to Einstein’s theory of relativity, the speed of light is maximum speed that can be attained by a particle in nature i.e. the speed of material particle (v) is always less than the speed of light c. Accordingly equation (2) implies that the de Broglie wave velocity must be greater than c. ...
... According to Einstein’s theory of relativity, the speed of light is maximum speed that can be attained by a particle in nature i.e. the speed of material particle (v) is always less than the speed of light c. Accordingly equation (2) implies that the de Broglie wave velocity must be greater than c. ...
Temperature characteristics of hot electron electroluminescence in silicon Monuko du Plessis, Hanqing Wen,
... temperature was achieved by measuring the current vs. voltage (I-V) characteristics of a forward biased pn junction in close proximity to the array of light sources on the same chip. This reference forward biased diode I-V curve was separately calibrated versus its own junction temperature in a temp ...
... temperature was achieved by measuring the current vs. voltage (I-V) characteristics of a forward biased pn junction in close proximity to the array of light sources on the same chip. This reference forward biased diode I-V curve was separately calibrated versus its own junction temperature in a temp ...
Highligh in Physics 2005
... One of the most intriguing problems in modern physics is to explain the emergence of the classical appearance of the macroscopic world from the quantum mechanical laws that rule the behavior of matter at the microscopic level. The fundamental features of quantum mechanics, such as linearity and enta ...
... One of the most intriguing problems in modern physics is to explain the emergence of the classical appearance of the macroscopic world from the quantum mechanical laws that rule the behavior of matter at the microscopic level. The fundamental features of quantum mechanics, such as linearity and enta ...
Paper 3 Paper 4 Mechanics 1
... • find the length, gradient and mid-point of a line segment, given the coordinates of the end-points; • find the equation of a straight line given sufficient information (e.g. the coordinates of two points on it, or one point on it and its gradient); • understand and use the relationships between th ...
... • find the length, gradient and mid-point of a line segment, given the coordinates of the end-points; • find the equation of a straight line given sufficient information (e.g. the coordinates of two points on it, or one point on it and its gradient); • understand and use the relationships between th ...
The Pauli Principle
... • In classical physics a hydrogen atom would be unstable. The electron would spiral into the nucleus as it radiates light. • In quantum physics the states are quantized. The Triumph of Quantum Mechanics: The hydrogen atom is stable! • The energy of hydrogen cannot become arbitrarily negative: ...
... • In classical physics a hydrogen atom would be unstable. The electron would spiral into the nucleus as it radiates light. • In quantum physics the states are quantized. The Triumph of Quantum Mechanics: The hydrogen atom is stable! • The energy of hydrogen cannot become arbitrarily negative: ...
Quantum electrodynamics
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved. QED mathematically describes all phenomena involving electrically charged particles interacting by means of exchange of photons and represents the quantum counterpart of classical electromagnetism giving a complete account of matter and light interaction.In technical terms, QED can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it ""the jewel of physics"" for its extremely accurate predictions of quantities like the anomalous magnetic moment of the electron and the Lamb shift of the energy levels of hydrogen.