Fault-Tolerant Quantum Computation and the Threshold Theorem
... the possible sorts of errant processes we described above, i.e. preparation, measurement, gate, and decoherence. An assumption which is most often made about decoherence is that it follows an independent error model: each qubit is effected by errors which are not correlated with errors on other qubi ...
... the possible sorts of errant processes we described above, i.e. preparation, measurement, gate, and decoherence. An assumption which is most often made about decoherence is that it follows an independent error model: each qubit is effected by errors which are not correlated with errors on other qubi ...
Impurity and soliton dynamics in a Fermi gas with nearest
... the center of the lattice. These differences are also seen in the line profiles of Fig. 4(c) taken at time t = 6/J. The soliton distributions at t = 6/J are very similar to the antisoliton distribution for the static barrier in Fig. 4(c). For incommensurate filling, an additional effect is observed. ...
... the center of the lattice. These differences are also seen in the line profiles of Fig. 4(c) taken at time t = 6/J. The soliton distributions at t = 6/J are very similar to the antisoliton distribution for the static barrier in Fig. 4(c). For incommensurate filling, an additional effect is observed. ...
Enhanced Symmetries and the Ground State of String Theory
... and unified, if the underlying theory is strongly coupled. The weakly coupled heterotic string provides a simple picture of coupling unification, but it is not clear why this should hold at stronger coupling, when e−S cannot be neglected. The picture we have developed of maximally enhanced symmetrie ...
... and unified, if the underlying theory is strongly coupled. The weakly coupled heterotic string provides a simple picture of coupling unification, but it is not clear why this should hold at stronger coupling, when e−S cannot be neglected. The picture we have developed of maximally enhanced symmetrie ...
Do dispositions and propensities have a role in the
... classical language, they can be attributed to the same system at the same time only via a contradiction. In fact, complementary properties cannot be simultaneously revealed by the same experiment, given that any apparatus obeys classical physics. • On the other hand, if we refer to a quantum system ...
... classical language, they can be attributed to the same system at the same time only via a contradiction. In fact, complementary properties cannot be simultaneously revealed by the same experiment, given that any apparatus obeys classical physics. • On the other hand, if we refer to a quantum system ...
Quantum networking with single ions J¨ urgen Eschner
... Possible causes of decoherence in this process of generating a pure single-photon quantum state include both technical deficiencies and fundamental issues. On the technical side, any jitter in the emission time or frequency, resulting for example from fluctuations in the laser frequency or intensity ...
... Possible causes of decoherence in this process of generating a pure single-photon quantum state include both technical deficiencies and fundamental issues. On the technical side, any jitter in the emission time or frequency, resulting for example from fluctuations in the laser frequency or intensity ...
Subjective Bayesian probabilities
... an insider attack on classical coin tossing can never be ruled out, whereas the beliefs that lead to a pure-state assignment are inconsistent with any other party’s being able to launch an insider attack. ...
... an insider attack on classical coin tossing can never be ruled out, whereas the beliefs that lead to a pure-state assignment are inconsistent with any other party’s being able to launch an insider attack. ...
Vector field microscopic imaging of light
... determine the properties of solid-state quantum devices, unlike matter waves, these optical fields are vectorial in nature, and their orientation and magnitude vary on a subwavelength scale. In order to obtain a complete description of light in nanoscale devices, it is therefore crucial to be able t ...
... determine the properties of solid-state quantum devices, unlike matter waves, these optical fields are vectorial in nature, and their orientation and magnitude vary on a subwavelength scale. In order to obtain a complete description of light in nanoscale devices, it is therefore crucial to be able t ...
Bohr`s Atomic Model and Paraconsistent Logic
... opposition to dialetheism, in this case the underlying semantics remains completely classical and no rejection of the Law of Non-Contradiction is involved. This approach was first developed by the Canadian logicians R. Jennings and P. Schotch and has come to be called preservationism (a recent discu ...
... opposition to dialetheism, in this case the underlying semantics remains completely classical and no rejection of the Law of Non-Contradiction is involved. This approach was first developed by the Canadian logicians R. Jennings and P. Schotch and has come to be called preservationism (a recent discu ...
Phys. Rev. Lett. 108, 100501 - APS Link Manager
... where E refers to the energy of the many-body state with the qubits in state jiA jiB (Fig. 1). Within the continuum limit of a classical crystal, Eint d2 =L for d aR , where d is the distance between the qubits and the ends of the quantum bus. Owing to quantum fluctuations, the classical cry ...
... where E refers to the energy of the many-body state with the qubits in state jiA jiB (Fig. 1). Within the continuum limit of a classical crystal, Eint d2 =L for d aR , where d is the distance between the qubits and the ends of the quantum bus. Owing to quantum fluctuations, the classical cry ...
The Physical Vacuum: Where Particle Physics Meets Cosmology
... The general belief: a compensation of the gravitational part to the vacuum energy when gravity and quantum physics are made consistent (e.g. “graviton condensate”) In principle, a compensation of EW contribution is possible in SUSY What about compensation of the QCD vacuum energy? No obvious way! ...
... The general belief: a compensation of the gravitational part to the vacuum energy when gravity and quantum physics are made consistent (e.g. “graviton condensate”) In principle, a compensation of EW contribution is possible in SUSY What about compensation of the QCD vacuum energy? No obvious way! ...
Cold collisions: chemistry at ultra-low temperatures; in: Tutorials in molecular
... changes. In the center of mass frame, the speeds of the particles are conserved. However, in the laboratory-fixed frame speeds may change as a result of collisions. By this mechanism, thermal equilibrium is reached after a hot gas is expanded into a cold gas. This principle is used in the buffer gas ...
... changes. In the center of mass frame, the speeds of the particles are conserved. However, in the laboratory-fixed frame speeds may change as a result of collisions. By this mechanism, thermal equilibrium is reached after a hot gas is expanded into a cold gas. This principle is used in the buffer gas ...
FEYNMANWS PATH INTEGRAL APPROACH TO QUANTUM FIELD
... what happens when we retain the exponential terms exp[ i=hH t]; naturally, the time step will now go like t ! dt. I regard the fact that we can carry this out in a (mostly) mathematically unambiguous manner as nothing short of a miracle. As indicated earlier, the physics in all this lies in the Hami ...
... what happens when we retain the exponential terms exp[ i=hH t]; naturally, the time step will now go like t ! dt. I regard the fact that we can carry this out in a (mostly) mathematically unambiguous manner as nothing short of a miracle. As indicated earlier, the physics in all this lies in the Hami ...
September 6th, 2007
... the applied field, then the maximum field is equal to the critical field minus the field generated by the current. Also if there is no external field, the maximum temperature is that for which the critical field is equal to the field produced by the current. Cooper pair The reason for superconductiv ...
... the applied field, then the maximum field is equal to the critical field minus the field generated by the current. Also if there is no external field, the maximum temperature is that for which the critical field is equal to the field produced by the current. Cooper pair The reason for superconductiv ...
posted
... that produces the field. In part (a), for (i) the field magnitudes were added because the fields were in the same direction and in (ii) and (iii) the field magnitudes were subtracted because the two fields were in opposite directions. In part (b) we could have used Coulomb’s law to find the forces o ...
... that produces the field. In part (a), for (i) the field magnitudes were added because the fields were in the same direction and in (ii) and (iii) the field magnitudes were subtracted because the two fields were in opposite directions. In part (b) we could have used Coulomb’s law to find the forces o ...
Magnetism Practice Problems
... 3. An electron is accelerated by an electric field produced by two parallel plates M and L. When the electron enters a region filled with a magnetic field of magnitude B = 0.5 T its velocity v = 1.6·107 m/s. a. What is the direction of the accelerating electric field between the plates M and L? b. ...
... 3. An electron is accelerated by an electric field produced by two parallel plates M and L. When the electron enters a region filled with a magnetic field of magnitude B = 0.5 T its velocity v = 1.6·107 m/s. a. What is the direction of the accelerating electric field between the plates M and L? b. ...
The influence of effective mass on magnetoresistance in ultrathin Fe/Cr/Fe films K. W
... films has led to the discovery of giant magnetoresistance (GMR). This effect was originally discovered in Fe/Cr/Fe multilayers [1, 2]. GMR is the change of electrical resistance observed when rotating from an antiparallel to parallel alignment of film magnetizations. For its description, two differe ...
... films has led to the discovery of giant magnetoresistance (GMR). This effect was originally discovered in Fe/Cr/Fe multilayers [1, 2]. GMR is the change of electrical resistance observed when rotating from an antiparallel to parallel alignment of film magnetizations. For its description, two differe ...
25. REASONING AND SOLUTION The electric field lines must
... each of the field contributions at the center of the square (see black dot). Each is directed along a diagonal of the square. Note that ED and EB point in opposite directions and, therefore, cancel, since they have the same magnitude. In contrast EA and EC point in the same direction toward corner A ...
... each of the field contributions at the center of the square (see black dot). Each is directed along a diagonal of the square. Note that ED and EB point in opposite directions and, therefore, cancel, since they have the same magnitude. In contrast EA and EC point in the same direction toward corner A ...
An amusing analogy: modelling quantum
... To be self-contained, let us recall the work of [3]. We will first see how an inanimate object can travel to the past and interact with a younger copy of itself in a consistent way. Figure 1(a) shows a 2D wormhole embedded in a fictitious 3D space. (The same wormhole can equivalently be represented ...
... To be self-contained, let us recall the work of [3]. We will first see how an inanimate object can travel to the past and interact with a younger copy of itself in a consistent way. Figure 1(a) shows a 2D wormhole embedded in a fictitious 3D space. (The same wormhole can equivalently be represented ...