Computing prime factors with a Josephson phase qubit quantum
... FIG. 2: Rapid entanglement for two to four-qubits. Panels a,b,c show the measured state occupation probabilities PQ1−4 (color) and PB (black) for increasing number of participating qubits N = {2, 3, 4} versus interaction time ∆τ . In all cases B is first prepared in the n = 1 Fock state[8] and the p ...
... FIG. 2: Rapid entanglement for two to four-qubits. Panels a,b,c show the measured state occupation probabilities PQ1−4 (color) and PB (black) for increasing number of participating qubits N = {2, 3, 4} versus interaction time ∆τ . In all cases B is first prepared in the n = 1 Fock state[8] and the p ...
PPT - Fernando Brandao
... For topologically trivial systems (AKLT, Heisenberg models): entanglement spectrum matches the energies of a local Hamiltonian on boundary For topological systems (Toric code): needs non-local Hamiltonian ...
... For topologically trivial systems (AKLT, Heisenberg models): entanglement spectrum matches the energies of a local Hamiltonian on boundary For topological systems (Toric code): needs non-local Hamiltonian ...
Light-shift imbalance induced blockade of collective excitations beyond the lowest order
... The significance of the LSIIB process can be summarized as follows: (a) It can be used to realize a deterministic quantum bit encoded in the collective excitation states of an atomic ensemble. (b) Along with a moderate-Q cavity, it can be used to realize a two-qubit gate (e.g., a CNOT gate) between t ...
... The significance of the LSIIB process can be summarized as follows: (a) It can be used to realize a deterministic quantum bit encoded in the collective excitation states of an atomic ensemble. (b) Along with a moderate-Q cavity, it can be used to realize a two-qubit gate (e.g., a CNOT gate) between t ...
Superconductivity Dome around a Quantum Critical Point
... (a type of 1 or 2 Dimensional ordering of the electronic density). It is thus of great interest to find clear examples where superconductivity coexists with CDWs, to provide model systems to study this interplay. Within this context, we have studied the metallic, linearchain compound Tantalum Trisul ...
... (a type of 1 or 2 Dimensional ordering of the electronic density). It is thus of great interest to find clear examples where superconductivity coexists with CDWs, to provide model systems to study this interplay. Within this context, we have studied the metallic, linearchain compound Tantalum Trisul ...
The Psychoanalytic Unconscious in a Quantum
... discuss some basic quantum mechanics findings. On a popular level, most people have heard of quantum physic’s principle of indeterminacy (the uncertainty principle). What does that mean? Briefly what Heisenberg established is that one cannot know, with certainty, the location and/or the speed of a p ...
... discuss some basic quantum mechanics findings. On a popular level, most people have heard of quantum physic’s principle of indeterminacy (the uncertainty principle). What does that mean? Briefly what Heisenberg established is that one cannot know, with certainty, the location and/or the speed of a p ...
The quantum measurement problem, the role of the observer and
... many people have contributed. The work of the Milano school, to which I gave a small contribution with my tesi di laurea, laid the foundation for it in the late 60's. The idea is that, although the superposition (6) and the mixture (7) represent in principle profoundly different situations, when the ...
... many people have contributed. The work of the Milano school, to which I gave a small contribution with my tesi di laurea, laid the foundation for it in the late 60's. The idea is that, although the superposition (6) and the mixture (7) represent in principle profoundly different situations, when the ...
Realisation of a programmable two-qubit quantum processor
... Computers are useful because they are versatile. Changing the problem to be solved amounts to reconfiguring inputs to the processor, that is, to reprogramming it. In a classical computer, a program is ultimately decomposed into sequences of operations implemented with logic gates. The explosion of i ...
... Computers are useful because they are versatile. Changing the problem to be solved amounts to reconfiguring inputs to the processor, that is, to reprogramming it. In a classical computer, a program is ultimately decomposed into sequences of operations implemented with logic gates. The explosion of i ...
Quantum information processing with atoms and ions
... efficiency; they also interact with each other very strongly due to the Coulomb repulsion, and they can, at the same time, be decoupled from the environment very efficiently. The ions stored and laser cooled in an electromagnetic trap can be described in terms of a set of external and internal degr ...
... efficiency; they also interact with each other very strongly due to the Coulomb repulsion, and they can, at the same time, be decoupled from the environment very efficiently. The ions stored and laser cooled in an electromagnetic trap can be described in terms of a set of external and internal degr ...
Quantum information and quantum computation
... speak of intractable problems that have this property: once the solution to the problem is found, it is easy to verify that the solution is correct. But it is dicult to nd the solution in the rst place. Note that for a problem of this kind, it suces to have a probabilistic algorithm (like an alg ...
... speak of intractable problems that have this property: once the solution to the problem is found, it is easy to verify that the solution is correct. But it is dicult to nd the solution in the rst place. Note that for a problem of this kind, it suces to have a probabilistic algorithm (like an alg ...
Slides - Indico
... solids (including small molecular systems adsorbed on surfaces), computer simulations, which will use parallel numerical algorithms will be carried out. The overall objective of the work is to develop a novel general method for computation of complex in-liquid properties of the system, with potent ...
... solids (including small molecular systems adsorbed on surfaces), computer simulations, which will use parallel numerical algorithms will be carried out. The overall objective of the work is to develop a novel general method for computation of complex in-liquid properties of the system, with potent ...
In the beginning - North Allegheny School District
... In the real world cats can't be both living and dead. So what is it that forces them to choose? IN the quantum world, measurements are what make things happen. When a measurement is made, one definite answer emerges from of a range of possibilities. Without measurements, evidently, the whole Univer ...
... In the real world cats can't be both living and dead. So what is it that forces them to choose? IN the quantum world, measurements are what make things happen. When a measurement is made, one definite answer emerges from of a range of possibilities. Without measurements, evidently, the whole Univer ...
Quantum computing
Quantum computing studies theoretical computation systems (quantum computers) that make direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits (qubits), which can be in superpositions of states. A quantum Turing machine is a theoretical model of such a computer, and is also known as the universal quantum computer. Quantum computers share theoretical similarities with non-deterministic and probabilistic computers. The field of quantum computing was initiated by the work of Yuri Manin in 1980, Richard Feynman in 1982, and David Deutsch in 1985. A quantum computer with spins as quantum bits was also formulated for use as a quantum space–time in 1968.As of 2015, the development of actual quantum computers is still in its infancy, but experiments have been carried out in which quantum computational operations were executed on a very small number of quantum bits. Both practical and theoretical research continues, and many national governments and military agencies are funding quantum computing research in an effort to develop quantum computers for civilian, business, trade, and national security purposes, such as cryptanalysis.Large-scale quantum computers will be able to solve certain problems much more quickly than any classical computers that use even the best currently known algorithms, like integer factorization using Shor's algorithm or the simulation of quantum many-body systems. There exist quantum algorithms, such as Simon's algorithm, that run faster than any possible probabilistic classical algorithm.Given sufficient computational resources, however, a classical computer could be made to simulate any quantum algorithm, as quantum computation does not violate the Church–Turing thesis.