Quantum cryptography
... Tensor product of Hilbert spaces H1 H 2 is the complex vector space spanned by tensor products of vectors from H1 and H2 . That corresponds to the quantum system composed of the quantum systems corresponding to Hilbert spaces H1 and H2. An important difference between classical and quantum systems ...
... Tensor product of Hilbert spaces H1 H 2 is the complex vector space spanned by tensor products of vectors from H1 and H2 . That corresponds to the quantum system composed of the quantum systems corresponding to Hilbert spaces H1 and H2. An important difference between classical and quantum systems ...
Quantum dynamics - Psychological Sciences
... • What models can account for these phenomena? – Dissonance theory provides no quantitative predictions – Extant models can predict time-dependent bolstering, but not time-dependent suppression – Extant process models do not predict choice-dependent bolstering or suppression effects ...
... • What models can account for these phenomena? – Dissonance theory provides no quantitative predictions – Extant models can predict time-dependent bolstering, but not time-dependent suppression – Extant process models do not predict choice-dependent bolstering or suppression effects ...
Wilson-Sommerfeld quantization rule revisited
... see the advantages of developing a general semiclassical perturbation theory based on WSQR. The quantum classical correspondence is manifested in a number of approaches. Here, we modestly restrict ourselves to isolated stationary states and thus carefully bypass, for example, problems that are more ...
... see the advantages of developing a general semiclassical perturbation theory based on WSQR. The quantum classical correspondence is manifested in a number of approaches. Here, we modestly restrict ourselves to isolated stationary states and thus carefully bypass, for example, problems that are more ...
From quantum cloning to quantum key distribution with
... If the encoded and measured quadratures coincide, then Alice and Bob know that they share correlated Gaussian data, from which they can distill a secret key by using appropriate techniques (otherwise they simply discard their data). This protocol was shown to be secure against Gaussian individual at ...
... If the encoded and measured quadratures coincide, then Alice and Bob know that they share correlated Gaussian data, from which they can distill a secret key by using appropriate techniques (otherwise they simply discard their data). This protocol was shown to be secure against Gaussian individual at ...
Quantum Wires and Quantum Point Contacts
... structure that results in a different band structure and thus a different band gap Mechanical strength. Carbon nanotubes have a very large Young modulus in their axial direction. The nanotube as a whole is very flexible because of the great length. Therefore, these compounds are potentially suitable ...
... structure that results in a different band structure and thus a different band gap Mechanical strength. Carbon nanotubes have a very large Young modulus in their axial direction. The nanotube as a whole is very flexible because of the great length. Therefore, these compounds are potentially suitable ...
Quantum mechanical modeling of the CNOT (XOR) gate
... However, in Section 4 we have considered the two-qubit system as an isolated system, but we have obtained that Ĥint does not have any global symmetry - which, also, directly follows from eq. (5). This produces a contradiction. 5.2 The contradiction It is worth emphasizing the above distinguished co ...
... However, in Section 4 we have considered the two-qubit system as an isolated system, but we have obtained that Ĥint does not have any global symmetry - which, also, directly follows from eq. (5). This produces a contradiction. 5.2 The contradiction It is worth emphasizing the above distinguished co ...
Sixth lecture, 11.11.03 (BECs, lasers, superselection rules and
... • Once atoms started leaking out, an interference pattern formed, with a previously unpredictable phase. • It's the measurement itself (as in the quantum eraser) which generated this coherence. • Originally, one could certainly have counted atoms, and measured their momenta to discern which cloud ea ...
... • Once atoms started leaking out, an interference pattern formed, with a previously unpredictable phase. • It's the measurement itself (as in the quantum eraser) which generated this coherence. • Originally, one could certainly have counted atoms, and measured their momenta to discern which cloud ea ...
White Paper
... modulation capability. In particular, its application to long-distance optical data transmission as a high-speed light source has given birth to world-wide optical fiber communication networks, over which Internet has been constructed to globalize human life on the “flat world” at an unexpected pace ...
... modulation capability. In particular, its application to long-distance optical data transmission as a high-speed light source has given birth to world-wide optical fiber communication networks, over which Internet has been constructed to globalize human life on the “flat world” at an unexpected pace ...
Quantum teleportation
Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger.Although the name is inspired by the teleportation commonly used in fiction, there is no relationship outside the name, because quantum teleportation concerns only the transfer of information. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it.The seminal paper first expounding the idea was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The record distance for quantum teleportation is 143 km (89 mi).