Exponential algorithmic speedup by quantum walk Andrew M. Childs, Richard Cleve, Enrico Deotto,
... one query, but that requires two queries on a classical computer [1]. Deutsch and Josza generalized this problem to one that can be solved exactly on a quantum computer in polynomial time, but for which an exact solution on a classical computer requires exponential time [2]. However, this problem ca ...
... one query, but that requires two queries on a classical computer [1]. Deutsch and Josza generalized this problem to one that can be solved exactly on a quantum computer in polynomial time, but for which an exact solution on a classical computer requires exponential time [2]. However, this problem ca ...
Quantum Theory on Genome Evolution
... way. Fourthly, what rules are obeyed by the new species production? -- this is a difficult problem in existing evolutionary theory. However, the quantum theory gives us a fully new view on genome evolution. We shall demonstrate that the problem can be treated in a quantitative way, demonstrate that ...
... way. Fourthly, what rules are obeyed by the new species production? -- this is a difficult problem in existing evolutionary theory. However, the quantum theory gives us a fully new view on genome evolution. We shall demonstrate that the problem can be treated in a quantitative way, demonstrate that ...
Non-contextual inequalities and dimensionality Johan Ahrens
... that if you find the photon at this point it is this specific eigenstate. ...
... that if you find the photon at this point it is this specific eigenstate. ...
Single-Photon Bus between Spin-Wave Quantum Memories.
... but heralded generation of a single magnon in macro-atom A, we transfer the magnon (or, if we choose, a portion of it) to macro-atom B while suppressing the population of the photonic mode by means of quantum interference (adiabatic dark-state transfer)24–26 . Successful transfer is verified by subs ...
... but heralded generation of a single magnon in macro-atom A, we transfer the magnon (or, if we choose, a portion of it) to macro-atom B while suppressing the population of the photonic mode by means of quantum interference (adiabatic dark-state transfer)24–26 . Successful transfer is verified by subs ...
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... loading protocol in which time slots of entangled photons are transmitted over optical fibers in the 1.55 µm lowloss window and gated into their respective quantum memories. We expect that the memory loading protocol can be run at cycling rates as high as R = 500 kHz, so that we can attempt to load a ...
... loading protocol in which time slots of entangled photons are transmitted over optical fibers in the 1.55 µm lowloss window and gated into their respective quantum memories. We expect that the memory loading protocol can be run at cycling rates as high as R = 500 kHz, so that we can attempt to load a ...
1 Correlated Electrons: Why we need Models to - cond
... started with the conception of the density functional theory (DFT), which was initiated by seminal works of Walter Kohn, Pierre Hohenberg, and Lu Sham [1, 2]. This is the first-principles scheme based on the exact theorem, stating that the ground state of interacting electron systems can be found by ...
... started with the conception of the density functional theory (DFT), which was initiated by seminal works of Walter Kohn, Pierre Hohenberg, and Lu Sham [1, 2]. This is the first-principles scheme based on the exact theorem, stating that the ground state of interacting electron systems can be found by ...
Multipartite entanglement, quantum- error
... and hence, the entangled states |γi do not saturate the upper bound for m > 1. We have not, however, established whether or not there even exist states which saturate the upper bound. Define an m-uniform multi-qudit state to be a state with the property that after tracing out all but m qudits we are ...
... and hence, the entangled states |γi do not saturate the upper bound for m > 1. We have not, however, established whether or not there even exist states which saturate the upper bound. Define an m-uniform multi-qudit state to be a state with the property that after tracing out all but m qudits we are ...
On the speed of fluctuations around
... ensemble or time averages are not needed to obtain a mixed equilibrium state for the system under consideration. This is a purely quantum phenomenon, and the key is entanglement, which leads to objective uncertainty—even when we have complete knowledge of the state of the whole system, a subsystem t ...
... ensemble or time averages are not needed to obtain a mixed equilibrium state for the system under consideration. This is a purely quantum phenomenon, and the key is entanglement, which leads to objective uncertainty—even when we have complete knowledge of the state of the whole system, a subsystem t ...
The Use of Intense Femtosecond Lasers in Atomic Physics
... For instance, an unchirped pulse of duration 30 fs will be stretched to about 45 fs after passing through 1 cm of fused silica. For an ultrashort 5 fs pulse, dispersion in air even needs to be taken into account. A positive or negative chirp can also be achieved using the dispersive properties of gr ...
... For instance, an unchirped pulse of duration 30 fs will be stretched to about 45 fs after passing through 1 cm of fused silica. For an ultrashort 5 fs pulse, dispersion in air even needs to be taken into account. A positive or negative chirp can also be achieved using the dispersive properties of gr ...
Has the Periodic Table Been Successfully Axiomatized?
... to atoms as it does to molecules. Indeed, the basis sets used in molecular calculations depend on the prior calculation of atomic basis sets. The authors then attempt a more precise explanation of the difference between the chemical and the physical atom and in doing so commit another fallacy. a ‘ch ...
... to atoms as it does to molecules. Indeed, the basis sets used in molecular calculations depend on the prior calculation of atomic basis sets. The authors then attempt a more precise explanation of the difference between the chemical and the physical atom and in doing so commit another fallacy. a ‘ch ...
magnetic moment and magnetization - Andrew.cmu.edu
... A general angular momentum vector, P, ~, and contributions from orbital angular momentum, L ~ Both moments are quanspin angular momentum, S. tized in units of h . The fundamental atomic unit of dipole moment is the Bohr magneton. In addition to the orbital moment, there is an additional contributi ...
... A general angular momentum vector, P, ~, and contributions from orbital angular momentum, L ~ Both moments are quanspin angular momentum, S. tized in units of h . The fundamental atomic unit of dipole moment is the Bohr magneton. In addition to the orbital moment, there is an additional contributi ...
ELECTRON TRANSPORT AT THE NANOSCALE Lecture Notes, preliminary version Geert Brocks December 2005
... The device shown in Fig. 1.2 is called a tunnel junction. The left and right regions consist of metals and the middle region consists of an insulator material, usually a metal-oxide.8 Such devices can be made in a very controlled way with the middle region having a thickness of a few nm. One is inte ...
... The device shown in Fig. 1.2 is called a tunnel junction. The left and right regions consist of metals and the middle region consists of an insulator material, usually a metal-oxide.8 Such devices can be made in a very controlled way with the middle region having a thickness of a few nm. One is inte ...
Hydrogen atom
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the elemental (baryonic) mass of the universe.In everyday life on Earth, isolated hydrogen atoms (usually called ""atomic hydrogen"" or, more precisely, ""monatomic hydrogen"") are extremely rare. Instead, hydrogen tends to combine with other atoms in compounds, or with itself to form ordinary (diatomic) hydrogen gas, H2. ""Atomic hydrogen"" and ""hydrogen atom"" in ordinary English use have overlapping, yet distinct, meanings. For example, a water molecule contains two hydrogen atoms, but does not contain atomic hydrogen (which would refer to isolated hydrogen atoms).