Population inversion in quantum dot ensembles via adiabatic rapid passage
... chirp and square root of pulse power for the model of a single quantum dot. In this case, we have set the intrinsic decay time of the dot to be much longer than the time scale considered, have modeled the tunneling by a relatively weak process with time constant 100 ps, and have taken the biexciton ...
... chirp and square root of pulse power for the model of a single quantum dot. In this case, we have set the intrinsic decay time of the dot to be much longer than the time scale considered, have modeled the tunneling by a relatively weak process with time constant 100 ps, and have taken the biexciton ...
Waxman
... Coherent states The most commonly found single mode states correspond not to the number state, but to a superposition of number states. The coherent state is an important example for such a state as a single mode laser, operated well above threshold, generates a coherent state excitation. The coher ...
... Coherent states The most commonly found single mode states correspond not to the number state, but to a superposition of number states. The coherent state is an important example for such a state as a single mode laser, operated well above threshold, generates a coherent state excitation. The coher ...
Wednesday, March 3, 2010
... Now we consider the situation where classically the particle does not have enough energy to surmount the potential barrier, E < V0. ...
... Now we consider the situation where classically the particle does not have enough energy to surmount the potential barrier, E < V0. ...
Spin as Primordial Self-Referential Process
... generates our perceptions of spacetime. Do we have any supporting arguments? The answer is also „Yes.‰ As already discussed earlier, spin is deeply connected to the microscopic structure of spacetime as reflected by the Dirac equation for fermions (Dirac, 1928). Indeed, Penrose (1960 & 1967) had con ...
... generates our perceptions of spacetime. Do we have any supporting arguments? The answer is also „Yes.‰ As already discussed earlier, spin is deeply connected to the microscopic structure of spacetime as reflected by the Dirac equation for fermions (Dirac, 1928). Indeed, Penrose (1960 & 1967) had con ...
The Quantum Mechanical Model of the Atom
... scientists use three quantum numbers to describe an atomic orbital. One quantum number, n, describes an orbital’s energy level and size. A second quantum number, l, describes an orbital’s shape. A third quantum number, ml , describes an orbital’s orientation in space. These three quantum numbers are ...
... scientists use three quantum numbers to describe an atomic orbital. One quantum number, n, describes an orbital’s energy level and size. A second quantum number, l, describes an orbital’s shape. A third quantum number, ml , describes an orbital’s orientation in space. These three quantum numbers are ...
ARMAD Kickoff: Task 2 - St. John`s Richmond Church
... • Leads to pure skepticism about everything, including science • “There was a time when religious skeptics proudly called themselves “free thinkers.” It is ironic that the modern materialist skeptic disbelieves even in the reality of his own freedom, both moral and intellectual.” ...
... • Leads to pure skepticism about everything, including science • “There was a time when religious skeptics proudly called themselves “free thinkers.” It is ironic that the modern materialist skeptic disbelieves even in the reality of his own freedom, both moral and intellectual.” ...
Quantum memory for superconducting qubits 兲
... experimental system by focusing on gate times short compared with the relevant energy and phase relaxation times. When the JJ is weakly coupled to the resonator, with g / ប0 below a few percent, the RWA memory protocol of Sec. III works well, and qubits are stored and retrieved with high fidelity. ...
... experimental system by focusing on gate times short compared with the relevant energy and phase relaxation times. When the JJ is weakly coupled to the resonator, with g / ប0 below a few percent, the RWA memory protocol of Sec. III works well, and qubits are stored and retrieved with high fidelity. ...
Probability zero in Bohm`s theory, Phil. Sci. 2013
... anomalies the theory implies that particles can arrive into regions of the configuration space in which the wave function is zero, and therefore the motion is not well defined. The first anomaly arises in a spin measurement on a single particle by means of a Stern-Gerlach magnet. The second arises in S ...
... anomalies the theory implies that particles can arrive into regions of the configuration space in which the wave function is zero, and therefore the motion is not well defined. The first anomaly arises in a spin measurement on a single particle by means of a Stern-Gerlach magnet. The second arises in S ...
Axiomatic and constructive quantum field theory Thesis for the
... relativity and quantum theory. The first section of this chapter, on special relativity, commences with the introduction of certain physical concepts such as inertial observers and the invariance of the speed of light. These physical concepts will then be used to motivate the structure of the mathem ...
... relativity and quantum theory. The first section of this chapter, on special relativity, commences with the introduction of certain physical concepts such as inertial observers and the invariance of the speed of light. These physical concepts will then be used to motivate the structure of the mathem ...
Analysis of a Quantum Error Correcting Code using Quantum
... Our model of a quantum error correction system consists of three processes: Alice, Bob and Noise. Alice wants to send a qubit to Bob over a noisy channel, represented by Noise. She uses a simple error correcting code based on threefold repetition [13, Chapter 10]. This code is able to correct a sing ...
... Our model of a quantum error correction system consists of three processes: Alice, Bob and Noise. Alice wants to send a qubit to Bob over a noisy channel, represented by Noise. She uses a simple error correcting code based on threefold repetition [13, Chapter 10]. This code is able to correct a sing ...
Law of Conservation of Muons
... The apparent absence of muon-electron transitions without neutrinos, such as p. e+y, p. 3e, and p +p ~e +p, leads one to suspect that there is a new conservation law forbidding them. Calculations' of the rate of such processes, assuming no such law exists, have indicated that it is hard to understan ...
... The apparent absence of muon-electron transitions without neutrinos, such as p. e+y, p. 3e, and p +p ~e +p, leads one to suspect that there is a new conservation law forbidding them. Calculations' of the rate of such processes, assuming no such law exists, have indicated that it is hard to understan ...
Applications of Supersymmetric Quantum
... whose solution is oscillatory. The requirement of continuity of ψ and ψ 0 on the potential well fixes E, which turns out1 to be discrete. In addition, because ψ (being continuous) is bounded and goes exponentially to 0 at x → ±∞, it is normalizable. Since H is self-adjoint, its eigenvalues E0 , E1 ...
... whose solution is oscillatory. The requirement of continuity of ψ and ψ 0 on the potential well fixes E, which turns out1 to be discrete. In addition, because ψ (being continuous) is bounded and goes exponentially to 0 at x → ±∞, it is normalizable. Since H is self-adjoint, its eigenvalues E0 , E1 ...
The Dirac Equation March 5, 2013
... So we have found solutions of the Dirac Equation which are also spin eigenstates....but only if the particle is travelling along the z-axis. ...
... So we have found solutions of the Dirac Equation which are also spin eigenstates....but only if the particle is travelling along the z-axis. ...
Quantum Mechanical Operators and Commutation C I. Bra
... In quantum mechanics, physically measurable quantities are represented by hermitian operators. Such operators {R} have matrix representations, in any basis spanning the space of functions on which the {R} act, that are hermitian: <φk|R|φ1> = <φ1|R|φk>* =.
The equality of the first and third ...
... In quantum mechanics, physically measurable quantities are represented by hermitian operators. Such operators {R} have matrix representations, in any basis spanning the space of functions on which the {R} act, that are hermitian: <φk|R|φ1> = <φ1|R|φk>* =
Controlling the dark exciton spin eigenstates by external magnetic field
... important prerequisite of a solid state qubit is that it has a long coherence time, in which its quantum state is not randomized by spurious interactions with its environment [1,2]. Semiconductor quantum dots (QDs) confine charge carriers into a three-dimensional nanometer scale region, thus acting ...
... important prerequisite of a solid state qubit is that it has a long coherence time, in which its quantum state is not randomized by spurious interactions with its environment [1,2]. Semiconductor quantum dots (QDs) confine charge carriers into a three-dimensional nanometer scale region, thus acting ...
AlumniDay_IOP_2 - Princeton University
... the new (Planck scale, 1019 GeV) is of unprecedented size. Do we really expect pure thought to take us so far? • String theory has morphed into a subject that is more like math than physics (some folks say): its priorities are no longer set by physics issues. • Despite all these complaints, some of ...
... the new (Planck scale, 1019 GeV) is of unprecedented size. Do we really expect pure thought to take us so far? • String theory has morphed into a subject that is more like math than physics (some folks say): its priorities are no longer set by physics issues. • Despite all these complaints, some of ...
Heisenberg`s original derivation of the uncertainty principle and its
... This article aims to resolve this longstanding confusion. It will be shown that in 1927 Heisenberg1 actually ‘proved’ not only eq. (2) but also eq. (1) from basic postulates for quantum mechanics. In showing that, it is pointed out that as one of the basic postulates Heisenberg supposed an assumptio ...
... This article aims to resolve this longstanding confusion. It will be shown that in 1927 Heisenberg1 actually ‘proved’ not only eq. (2) but also eq. (1) from basic postulates for quantum mechanics. In showing that, it is pointed out that as one of the basic postulates Heisenberg supposed an assumptio ...
PDF
... Most notably, the f ields that carry the three fundamental forces of the standard model of particle physics are gauge f ields: 1. Ordinary electromagnetism–considered without any magnetic charges– is a gauge theory of U (1)-symmetry-principal bundles with connection. 2. The f ields in the Yang-Mills ...
... Most notably, the f ields that carry the three fundamental forces of the standard model of particle physics are gauge f ields: 1. Ordinary electromagnetism–considered without any magnetic charges– is a gauge theory of U (1)-symmetry-principal bundles with connection. 2. The f ields in the Yang-Mills ...
Turing machine
... In mathematical logic, predicate logic is the symbolic formal systems like first-order logic, second-order logic or many-sorted logic. This formal system is distinguished from other systems in that its formulae contain variables which can be quantified. Two common quantifiers are the existential ∃ ( ...
... In mathematical logic, predicate logic is the symbolic formal systems like first-order logic, second-order logic or many-sorted logic. This formal system is distinguished from other systems in that its formulae contain variables which can be quantified. Two common quantifiers are the existential ∃ ( ...