Quantum scattering
... Therefore, the task of constructing the semiclassics of a scattering system is completed, if we can find a connection between the spectral density d(E) and the scattering matrix S . We will see that (35.12) provides the clue. Note that the right hand side of (35.12) has nearly the structure of (35.1 ...
... Therefore, the task of constructing the semiclassics of a scattering system is completed, if we can find a connection between the spectral density d(E) and the scattering matrix S . We will see that (35.12) provides the clue. Note that the right hand side of (35.12) has nearly the structure of (35.1 ...
Relativistic quantum information theory and quantum reference frames
... Quantum mechanics and general relativity are both extremely successful theories. However, the theories each have a limited domain of applicability which cannot adequately describe extreme phenomena where both quantum and gravitational effects are important. There is research into developing a fundam ...
... Quantum mechanics and general relativity are both extremely successful theories. However, the theories each have a limited domain of applicability which cannot adequately describe extreme phenomena where both quantum and gravitational effects are important. There is research into developing a fundam ...
Decoherence, non-Markovianity and quantum estimation in qubit
... bath can be a difficult task, or even inappropriate, for example because of the approximations introduced to derive a master equation are too strong to hold in real systems. As a matter of fact, the classical description becomes progressively more reliable as far as the environment has many degrees ...
... bath can be a difficult task, or even inappropriate, for example because of the approximations introduced to derive a master equation are too strong to hold in real systems. As a matter of fact, the classical description becomes progressively more reliable as far as the environment has many degrees ...
Quantum Heisenberg models and their probabilistic representations
... weight of the form ϑ#cycles or ϑ#loops with parameter ϑ = 2. Recently, Schramm studied the cycle model on the complete graph and with ϑ = 1 (that is, without this factor) [41]. He showed in particular that cycle lengths are generated by a split-merge process (or “coagulation-fragmentation”), and tha ...
... weight of the form ϑ#cycles or ϑ#loops with parameter ϑ = 2. Recently, Schramm studied the cycle model on the complete graph and with ϑ = 1 (that is, without this factor) [41]. He showed in particular that cycle lengths are generated by a split-merge process (or “coagulation-fragmentation”), and tha ...
1 simultaneous polarization squeezing of all three stokes
... Abstract: We study Polarization squeezing of a pure photon number state which is obviously polarized but if the basis of linear polarization is adopted, simultaneous polarization squeezing in all the stokes parameters is observed. We use our definition of Polarization squeezing, which is similar to ...
... Abstract: We study Polarization squeezing of a pure photon number state which is obviously polarized but if the basis of linear polarization is adopted, simultaneous polarization squeezing in all the stokes parameters is observed. We use our definition of Polarization squeezing, which is similar to ...
Quantum Error Correction
... 1st bit of error syndrome says whether the first two bits of the state are the same or different. 2nd bit of error syndrome says whether the second two bits of the state are the same or different. ...
... 1st bit of error syndrome says whether the first two bits of the state are the same or different. 2nd bit of error syndrome says whether the second two bits of the state are the same or different. ...
Linear spin wave theory - Paul Scherrer Institut
... Quantum mechanically: Equivalence with coupled quantum harmonic oscillators Frustration leads to spiral ground state Calculation of spin wave dispersion of a single-Q spiral Introduction to SpinW ...
... Quantum mechanically: Equivalence with coupled quantum harmonic oscillators Frustration leads to spiral ground state Calculation of spin wave dispersion of a single-Q spiral Introduction to SpinW ...
Renormalization
... a) inside the potential. In momentum space, we see that the true solution involves high-momentum as well as low-momentum modes. The determination of c0 , c1 , . . . in Eq. (1.12) was done to match the matrix elements of the potential for long wavelength (low-momentum) states. We now see that this is ...
... a) inside the potential. In momentum space, we see that the true solution involves high-momentum as well as low-momentum modes. The determination of c0 , c1 , . . . in Eq. (1.12) was done to match the matrix elements of the potential for long wavelength (low-momentum) states. We now see that this is ...
