Quantum process tomography of two-qubit controlled-Z
... level 兩2典 is used as an auxiliary state to realize the CZ gate, as discussed below. The operation of a similar device has been reported previously.15,16 The state of each qubit is controlled by applying a rectangular-shaped current pulse 共Z pulse兲 or a Gaussian-shaped microwave pulse 共X, Y pulse兲 to ...
... level 兩2典 is used as an auxiliary state to realize the CZ gate, as discussed below. The operation of a similar device has been reported previously.15,16 The state of each qubit is controlled by applying a rectangular-shaped current pulse 共Z pulse兲 or a Gaussian-shaped microwave pulse 共X, Y pulse兲 to ...
Section 1 Bohr`s Model of the Atom: Practice Problems
... 24. Analyze and critique the Bohr model of the atom. What three assumptions did Bohr make in developing his model? SOLUTION: Bohr's model correctly predicted values for hydrogen's spectrum, but was unable to predict other elements' spectra. Bohr's assumptions include quantized energy levels, atom ...
... 24. Analyze and critique the Bohr model of the atom. What three assumptions did Bohr make in developing his model? SOLUTION: Bohr's model correctly predicted values for hydrogen's spectrum, but was unable to predict other elements' spectra. Bohr's assumptions include quantized energy levels, atom ...
Dynamical Symmetries of Planar Field Configurations
... systems possessing dynamical symmetries is the well-known non-relativistic Kepler problem, with the SO(4) group for the bound states, and SO(3, 1) for the scattering states of a particle in the Kepler potential. In many field systems, hidden symmetries are induced by specific spin dynamics, and so, t ...
... systems possessing dynamical symmetries is the well-known non-relativistic Kepler problem, with the SO(4) group for the bound states, and SO(3, 1) for the scattering states of a particle in the Kepler potential. In many field systems, hidden symmetries are induced by specific spin dynamics, and so, t ...
How to hide a secret direction
... good accuracy, but also to discriminate between states with angular momentum J and J − 1 (i.e. detect the presence of a singlet |ψ− in the carrier state); note that if ρf and ρb had both the same angular momentum, say J, it would be impossible for the space explorers to gather any information abou ...
... good accuracy, but also to discriminate between states with angular momentum J and J − 1 (i.e. detect the presence of a singlet |ψ− in the carrier state); note that if ρf and ρb had both the same angular momentum, say J, it would be impossible for the space explorers to gather any information abou ...
The Higgs Boson - University of Toronto Physics
... cept the incredible disappearance of the cosmological constant. Certain ex tensions of the theory proposed over the past decade often involve the intro duction of additional Higgs fields. Al though the arguments for such exten sions are often compelling, the phe nomena associated with these ext ...
... cept the incredible disappearance of the cosmological constant. Certain ex tensions of the theory proposed over the past decade often involve the intro duction of additional Higgs fields. Al though the arguments for such exten sions are often compelling, the phe nomena associated with these ext ...
The Philosophy behind Quantum Gravity
... in the last resort, even the definitions of momentum and energy quantities rest – must always be described entirely on classical lines, and consequently kept outside the system subject to quantum mechanical treatment. The point is that we can treat a measuring apparatus (or part of this) as a quantu ...
... in the last resort, even the definitions of momentum and energy quantities rest – must always be described entirely on classical lines, and consequently kept outside the system subject to quantum mechanical treatment. The point is that we can treat a measuring apparatus (or part of this) as a quantu ...
slides on Quantum Isometry Groups
... and Noncommutative Geometry a la Connes. However, a successful marriage of the two is still not fully achieved...some initial and pioneering success in this direction came from Chakraborty-Pal who constructed SUµ (2)-equivariant nontrivial spectral triple (which was later analyzed in depth by Connes ...
... and Noncommutative Geometry a la Connes. However, a successful marriage of the two is still not fully achieved...some initial and pioneering success in this direction came from Chakraborty-Pal who constructed SUµ (2)-equivariant nontrivial spectral triple (which was later analyzed in depth by Connes ...
Simultaneous Spin-Charge Relaxation in Double Quantum Dots
... Controlling individual spins is central to spin-based quantum information processing [1–3] and also enables precision metrology [4,5]. While rapid control can be achieved by coupling the spins of electrons in semiconductor quantum dots [1,2] to electric fields via the electronic charge state [3,6–15 ...
... Controlling individual spins is central to spin-based quantum information processing [1–3] and also enables precision metrology [4,5]. While rapid control can be achieved by coupling the spins of electrons in semiconductor quantum dots [1,2] to electric fields via the electronic charge state [3,6–15 ...
Department of Physics MSc Handbook 2012/13 www.kcl.ac.uk/physics
... Coursework deadlines will not be extended or other special arrangements made simply because a student has made other arrangements. Induction Talk There will be an induction talk on 26 September for all MSc students. This will be at 2pm in room 7.06. It is extremely important that you attend this mee ...
... Coursework deadlines will not be extended or other special arrangements made simply because a student has made other arrangements. Induction Talk There will be an induction talk on 26 September for all MSc students. This will be at 2pm in room 7.06. It is extremely important that you attend this mee ...
Existence of an Ericson regime in stretched helium
... computed 650 resonances with energies corresponding to the m530th threshold or lower. The result is shown in Fig. 2. We see that for small E (r) the resonances form regular Rydberg series which are progressively broken up for higher excitation energy eventually resulting in a ‘‘chaotic’’ jumble of r ...
... computed 650 resonances with energies corresponding to the m530th threshold or lower. The result is shown in Fig. 2. We see that for small E (r) the resonances form regular Rydberg series which are progressively broken up for higher excitation energy eventually resulting in a ‘‘chaotic’’ jumble of r ...
Part II Applications of Quantum Mechanics Lent 2012
... Really, the particles are to be thought of as wave packets which are made of a superposition of waves with wave vectors taking values in (k − ∆k, k + ∆k); the particles are then localized. This does not materially affect the analysis using the idealized system of pure plane waves. Why are we concern ...
... Really, the particles are to be thought of as wave packets which are made of a superposition of waves with wave vectors taking values in (k − ∆k, k + ∆k); the particles are then localized. This does not materially affect the analysis using the idealized system of pure plane waves. Why are we concern ...
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.