Quantum Computing
... Deutsch developed a notion of a quantum mechanical Turing machine. Bernstein, Vazirani, and Yao showed that quantum computers can do anything a classical computer can do with at most a small (logarithmic) slow down. The early 1990s saw the first truly quantum algorithms, algorithms with no classica ...
... Deutsch developed a notion of a quantum mechanical Turing machine. Bernstein, Vazirani, and Yao showed that quantum computers can do anything a classical computer can do with at most a small (logarithmic) slow down. The early 1990s saw the first truly quantum algorithms, algorithms with no classica ...
Chapter 5 Quantum Information Theory
... Chapter 5 Quantum Information Theory Quantum information theory is a rich subject that could easily have occupied us all term. But because we are short of time (I’m anxious to move on to quantum computation), I won’t be able to cover this subject in as much depth as I would have liked. We will settl ...
... Chapter 5 Quantum Information Theory Quantum information theory is a rich subject that could easily have occupied us all term. But because we are short of time (I’m anxious to move on to quantum computation), I won’t be able to cover this subject in as much depth as I would have liked. We will settl ...
Spin transport through nanostructures B. K ,
... The standard way to generate a spin-polarized current is to inject electrons into a semiconductor from a ferromagnet [7], where it can be subsequently influenced by gate voltages. This is not very efficient due to scattering at the interface. The spin polarization is very small and there is also an ...
... The standard way to generate a spin-polarized current is to inject electrons into a semiconductor from a ferromagnet [7], where it can be subsequently influenced by gate voltages. This is not very efficient due to scattering at the interface. The spin polarization is very small and there is also an ...
Pulse Propagation in Resonant Tunneling
... The transmission of pulses in tunneling transport is a basic problem in quantum mechanics[1, 2, 3]. Here the case of an incident wave packet transmitted through a resonant quasi-bound level of a quantum system (QS) is a fundamental issue under current study [4, 5, 6, 7, 8, 9, 10]. In our previous pa ...
... The transmission of pulses in tunneling transport is a basic problem in quantum mechanics[1, 2, 3]. Here the case of an incident wave packet transmitted through a resonant quasi-bound level of a quantum system (QS) is a fundamental issue under current study [4, 5, 6, 7, 8, 9, 10]. In our previous pa ...
Entanglement and its Role in Shor`s Algorithm
... amount of classical resources. In recent work, Jozsa and Linden [4] have proven that, if a quantum algorithm cannot be simulated classically using resources only polynomial in the size of the input data, then it must have multipartite entanglement involving unboundedly many of its qubits – if it is ...
... amount of classical resources. In recent work, Jozsa and Linden [4] have proven that, if a quantum algorithm cannot be simulated classically using resources only polynomial in the size of the input data, then it must have multipartite entanglement involving unboundedly many of its qubits – if it is ...
Topics in Modern Quantum Optics
... of the notion of a photon in modern quantum optics and a relativistic description of single, localized, photons. In the second part we will discuss in great detail the “standard model” of quantum optics, i.e. the Jaynes-Cummings model describing the interaction of a two-mode system with a single mod ...
... of the notion of a photon in modern quantum optics and a relativistic description of single, localized, photons. In the second part we will discuss in great detail the “standard model” of quantum optics, i.e. the Jaynes-Cummings model describing the interaction of a two-mode system with a single mod ...
One-dimensional theory of the quantum Hall system
... appearance of fractional charge in one-dimensional polymer systems, such as polyacetylen [31–33]. By explicitly solving the problem of a generic twobody interaction (which could be Coulomb) we find that the fractal structure of the (abelian) Haldane-Halperin hierarchy construction [34,35] is manifes ...
... appearance of fractional charge in one-dimensional polymer systems, such as polyacetylen [31–33]. By explicitly solving the problem of a generic twobody interaction (which could be Coulomb) we find that the fractal structure of the (abelian) Haldane-Halperin hierarchy construction [34,35] is manifes ...
Three-sublattice order in the SU (3) Heisenberg model on the
... and at half filling, i.e. when each lattice site is occupied by exactly one fermion, the ground state is an antiferromagnetic Mott insulator. In experiments on cold atoms, the transition to a Mott insulator has recently been observed;5,6 the observation of the antiferromagnetic spin order is still o ...
... and at half filling, i.e. when each lattice site is occupied by exactly one fermion, the ground state is an antiferromagnetic Mott insulator. In experiments on cold atoms, the transition to a Mott insulator has recently been observed;5,6 the observation of the antiferromagnetic spin order is still o ...
Master Thesis
... Up to now some proposals of simulating QFT are unfeasible with current technologies, since they are based on lattice gauge theories and need a high number of controllable quits. In addition, other feasible proposals are designed for ion traps where the degrees of freedom are the finite number of vib ...
... Up to now some proposals of simulating QFT are unfeasible with current technologies, since they are based on lattice gauge theories and need a high number of controllable quits. In addition, other feasible proposals are designed for ion traps where the degrees of freedom are the finite number of vib ...
950 - IACR
... strings (CRS), and that are statistically hiding.1 Yet, when using these commitments to get everlastingly secure OT, we run into the same problem again: We would get an everlastingly secure OT using a CRS, but a generalization of Lo’s impossibility shows that no everlastingly secure OT protocols ex ...
... strings (CRS), and that are statistically hiding.1 Yet, when using these commitments to get everlastingly secure OT, we run into the same problem again: We would get an everlastingly secure OT using a CRS, but a generalization of Lo’s impossibility shows that no everlastingly secure OT protocols ex ...
Chapter 7
... A founder of QUANTUM MECHANICS, he is famous for his uncertainty principle, which states that it is impossible to determine both the position and momentum of a subatomic particle (such as the electron) with arbitrarily high accuracy. ...
... A founder of QUANTUM MECHANICS, he is famous for his uncertainty principle, which states that it is impossible to determine both the position and momentum of a subatomic particle (such as the electron) with arbitrarily high accuracy. ...
Cryogenic Control Architecture for Large
... (Received 4 October 2014; revised manuscript received 21 December 2014; published 23 February 2015) Solid-state qubits have recently advanced to the level that enables them, in principle, to be scaled up into fault-tolerant quantum computers. As these physical qubits continue to advance, meeting the ...
... (Received 4 October 2014; revised manuscript received 21 December 2014; published 23 February 2015) Solid-state qubits have recently advanced to the level that enables them, in principle, to be scaled up into fault-tolerant quantum computers. As these physical qubits continue to advance, meeting the ...
atom interferometer - Center for Ultracold Atoms
... recombine, forming interference fringes. We monitor the phase and contrast of these fringes, which are extremely sensitive to any forces on the atoms. This year we completed three experiments on decoherence, we are midway through a measurement of the matter wave index of refraction, and we are devel ...
... recombine, forming interference fringes. We monitor the phase and contrast of these fringes, which are extremely sensitive to any forces on the atoms. This year we completed three experiments on decoherence, we are midway through a measurement of the matter wave index of refraction, and we are devel ...
Quantum Computation and Quantum Information
... underway in science. A series of crises had arisen in physics. The problem was that the theories of physics at that time (now dubbed classical physics) were predicting absurdities such as the existence of an ‘ultraviolet catastrophe’ involving infinite energies, or electrons spiraling inexorably int ...
... underway in science. A series of crises had arisen in physics. The problem was that the theories of physics at that time (now dubbed classical physics) were predicting absurdities such as the existence of an ‘ultraviolet catastrophe’ involving infinite energies, or electrons spiraling inexorably int ...
Resonances, dissipation and decoherence in exotic and artificial atoms
... ’standard’ mechanism for the formation of antiprotonic atoms is the replacement of a shell electron by an antiproton in antiproton-atom-collisions. Alternative processes, though, could become relevant in view of the upcoming new facilities, such as FLAIR at GSI [20], which will provide antiprotonic ...
... ’standard’ mechanism for the formation of antiprotonic atoms is the replacement of a shell electron by an antiproton in antiproton-atom-collisions. Alternative processes, though, could become relevant in view of the upcoming new facilities, such as FLAIR at GSI [20], which will provide antiprotonic ...
