Physics from Computer Science — a position statement —
... b. On the other hand, the emerging field of Quantum Informatics has brought new computational possibilities to light, some of which endanger current cryptographic encoding schemes, but some of which at the same time provide the corresponding remedy in terms of secure quantum cryptographic and commun ...
... b. On the other hand, the emerging field of Quantum Informatics has brought new computational possibilities to light, some of which endanger current cryptographic encoding schemes, but some of which at the same time provide the corresponding remedy in terms of secure quantum cryptographic and commun ...
Quantum emission dynamics from a single quantum dot in a planar
... vacuum Rabi oscillations are obtained for an increasing Q, even for the modest Q values that are now routinely available. Rabi oscillations can also be observed on the corresponding light emission, shown in Fig. 2, center. As strong coupling may in fact not be a desired quantity, e.g., for obtaining ...
... vacuum Rabi oscillations are obtained for an increasing Q, even for the modest Q values that are now routinely available. Rabi oscillations can also be observed on the corresponding light emission, shown in Fig. 2, center. As strong coupling may in fact not be a desired quantity, e.g., for obtaining ...
Quantum linear Boltzmann equation with finite intercollision time
... where the subscripts 储 refer to the components parallel to Q. It is obvious that after our single collision the particle’s density matrix ˆ , whatever it was before the collision, becomes perfect diagonal in P储. Gradually, after many collisions, the state ˆ becomes a mixture of plane waves, no off ...
... where the subscripts 储 refer to the components parallel to Q. It is obvious that after our single collision the particle’s density matrix ˆ , whatever it was before the collision, becomes perfect diagonal in P储. Gradually, after many collisions, the state ˆ becomes a mixture of plane waves, no off ...
Fysiikan seminaarit -haku Oulun yliopisto | Fysiikan seminaarit
... 08.12.2011 Timo Enqvist (Centre for Underground Physics in Pyhäsalmi) CUPP at Pyhäsalmi - Present and future Abstract: The Pyhäsalmi mine in Pyhäjärvi, Finland is a prominent candidate site for a large-scale research infrastructure for particle and astroparticle physics (LAGUNA). Two detector option ...
... 08.12.2011 Timo Enqvist (Centre for Underground Physics in Pyhäsalmi) CUPP at Pyhäsalmi - Present and future Abstract: The Pyhäsalmi mine in Pyhäjärvi, Finland is a prominent candidate site for a large-scale research infrastructure for particle and astroparticle physics (LAGUNA). Two detector option ...
Electrons in Atoms
... are so many of these lines that they blend together into an unbroken band of color from red to violet. Therefore, the spectrum of white light is continious. On the other hand, the spectra produced by certain gaseous substances consist of only a limited number of colored lines with dark spaces betwee ...
... are so many of these lines that they blend together into an unbroken band of color from red to violet. Therefore, the spectrum of white light is continious. On the other hand, the spectra produced by certain gaseous substances consist of only a limited number of colored lines with dark spaces betwee ...
Electrical control of a long-lived spin qubit in a
... randomized benchmarking) an average single qubit gate fidelity of an electron spin in a Si/SiGe quantum dot of ~99 %. The dephasing time is extended to ~70 us for the Hahn echo and up to ~400 us with CPMG128. In parallel, the presence of the excided valley-orbit state, close in energy and strongly c ...
... randomized benchmarking) an average single qubit gate fidelity of an electron spin in a Si/SiGe quantum dot of ~99 %. The dephasing time is extended to ~70 us for the Hahn echo and up to ~400 us with CPMG128. In parallel, the presence of the excided valley-orbit state, close in energy and strongly c ...
The story of Relativity
... events based on how many times the light bounces back and forth. – If a horse starts and finishes a race in 55 billion cycles, it took 55 seconds to cross the ...
... events based on how many times the light bounces back and forth. – If a horse starts and finishes a race in 55 billion cycles, it took 55 seconds to cross the ...
Quantum Coherence between States with Even and Odd Numbers of Electrons
... In 1952, Wick, Wightman, and Wigner [1] claimed that the coherent linear superpositions of states with even and odd numbers of fermions are incompatible with the Lorentz invariance and introduced the superselection rule, according to which such linear superpositions are physically impossible. In act ...
... In 1952, Wick, Wightman, and Wigner [1] claimed that the coherent linear superpositions of states with even and odd numbers of fermions are incompatible with the Lorentz invariance and introduced the superselection rule, according to which such linear superpositions are physically impossible. In act ...
Physics and intrinsic properties - Philsci
... certain form of motion of the particles does not call for an explanation, namely inertial motion, that is, constant motion on a straight line (Newton’s first law). Only change in the state of motion, that is, the acceleration of the particles (change in their velocity) has to be accounted for. Newto ...
... certain form of motion of the particles does not call for an explanation, namely inertial motion, that is, constant motion on a straight line (Newton’s first law). Only change in the state of motion, that is, the acceleration of the particles (change in their velocity) has to be accounted for. Newto ...
Lieb-Robinson bounds and the speed of light from topological order
... principle seriously: if object A causes a change on object B, there must be changes involving the points in between. The field is exactly what changes. In addition, if something is “happening” at all the intermediate points, then the interaction between the objects must propagate with a finite speed ...
... principle seriously: if object A causes a change on object B, there must be changes involving the points in between. The field is exactly what changes. In addition, if something is “happening” at all the intermediate points, then the interaction between the objects must propagate with a finite speed ...
Presentation #3
... desired observable, i.e., operate on the wave function with the appropriate operator, then the eigenvalue will represent the desired quantity. Eigenvalue equations play a major role in Quantum Chemistry, but Schrödinger did not invent them; they had been around in mathematics for a long time. He ado ...
... desired observable, i.e., operate on the wave function with the appropriate operator, then the eigenvalue will represent the desired quantity. Eigenvalue equations play a major role in Quantum Chemistry, but Schrödinger did not invent them; they had been around in mathematics for a long time. He ado ...
Chapter 2 - Physics & Astronomy
... • waves result when the motion at a given position is a delayed response to the motion at neighbouring points • derivatives with respect to time and position are related by the physics of the system, which lets us write differential equations ...
... • waves result when the motion at a given position is a delayed response to the motion at neighbouring points • derivatives with respect to time and position are related by the physics of the system, which lets us write differential equations ...
pdf
... wavefunction (the "state" |ψ〉 ) , and there is no strong consensus on the issue, so we asked the faculty how they present the physical interpretation of the wavefunction to their students in JQM. In particular, we asked them to choose one of the following two interpretations or to describe an altern ...
... wavefunction (the "state" |ψ〉 ) , and there is no strong consensus on the issue, so we asked the faculty how they present the physical interpretation of the wavefunction to their students in JQM. In particular, we asked them to choose one of the following two interpretations or to describe an altern ...
Why physics does not preclude free will
... opposed to standard QM: that is not possible, since they both yield exactly the same observable predictions. (Argument from simplicity is unreliable; specifics given later if time allows.) Note that I don’t claim that any particular experiment (at the nonrelativistic level*) corroborates TI, since a ...
... opposed to standard QM: that is not possible, since they both yield exactly the same observable predictions. (Argument from simplicity is unreliable; specifics given later if time allows.) Note that I don’t claim that any particular experiment (at the nonrelativistic level*) corroborates TI, since a ...
Feynman lectures on computation
... • If gcd(j,r)=1, we can determine r by canceling M r to an irreducible fraction. • From number theory, the probability that a number chosen randomly from 1…r is coprime to r is greater than 1/logr. Thus we repeat the computation O(logr)
... • If gcd(j,r)=1, we can determine r by canceling M r to an irreducible fraction. • From number theory, the probability that a number chosen randomly from 1…r is coprime to r is greater than 1/logr. Thus we repeat the computation O(logr)
The Quantum World The quantum revolution is usually considered
... a lower-energy H-atom orbit, and in so doing will release an electromagnetic wave whose energy must (because of the law of conservation of energy) equal the energy difference between the two H-orbits. This allowed Bohr to calculate what all the spectral lines of hydrogen should be, and to his enormo ...
... a lower-energy H-atom orbit, and in so doing will release an electromagnetic wave whose energy must (because of the law of conservation of energy) equal the energy difference between the two H-orbits. This allowed Bohr to calculate what all the spectral lines of hydrogen should be, and to his enormo ...