Spin-based quantum computers made by chemistry: hows and whys†
... This journal is ª The Royal Society of Chemistry 2009 ...
... This journal is ª The Royal Society of Chemistry 2009 ...
EE579T-Class 4
... • Same code at each end • Important that message length < cipher length • Billions of combinations possible • Codes changed frequently • Each circuit requires a code pair Spring 2001 © 2000, 2001, Richard A. Stanley ...
... • Same code at each end • Important that message length < cipher length • Billions of combinations possible • Codes changed frequently • Each circuit requires a code pair Spring 2001 © 2000, 2001, Richard A. Stanley ...
Modeling Luminance Perception at Absolute Threshold
... Finally, other entoptic phenomena, which are not directly caused by light in the common way, such as floaters, phosphenes, visual snow, the blue-field entoptic effect [RP80], or afterimages [RE12], can occur under specific conditions but are not related to scotopic vision and will not be modelled in ...
... Finally, other entoptic phenomena, which are not directly caused by light in the common way, such as floaters, phosphenes, visual snow, the blue-field entoptic effect [RP80], or afterimages [RE12], can occur under specific conditions but are not related to scotopic vision and will not be modelled in ...
The Compton-Schwarzschild correspondence from extended de
... an extended form of canonical non-relativistic quantum mechanics which, at first sight, appears to be non-gravitational, in the sense that the results obtained do not require the introduction of a classical Newtonian gravitational potential. Nonetheless, introducing such a potential as an external f ...
... an extended form of canonical non-relativistic quantum mechanics which, at first sight, appears to be non-gravitational, in the sense that the results obtained do not require the introduction of a classical Newtonian gravitational potential. Nonetheless, introducing such a potential as an external f ...
Characterizing and witnessing multipartite correlations: from nonlocality to contextuality PhD thesis
... for the first time the phenomenon of quantum entanglement, which ultimately lead to the formal definition of Nonlocality by J. Bell in 1964 (Bel64). This phenomenon of nonlocality tells that correlations observed among the outcomes of spacelike separated measurements on a quantum system may be stron ...
... for the first time the phenomenon of quantum entanglement, which ultimately lead to the formal definition of Nonlocality by J. Bell in 1964 (Bel64). This phenomenon of nonlocality tells that correlations observed among the outcomes of spacelike separated measurements on a quantum system may be stron ...
Quiet Readout of Superconducting Flux States
... (SQUID), which involves two Josephson junctions connected in parallel on a superconducting ring, provides the most sensitive means for detecting magnetic flux [13, 14] and is the obvious candidate to observe the quantum state of the flux qubit. In principle, the qubit flux can be measured in a relat ...
... (SQUID), which involves two Josephson junctions connected in parallel on a superconducting ring, provides the most sensitive means for detecting magnetic flux [13, 14] and is the obvious candidate to observe the quantum state of the flux qubit. In principle, the qubit flux can be measured in a relat ...
MSPowerPoint file
... 1/3 of the proton spin comes from quark spin Direct measurements of the strange quark sea could not verify a negative strange polarization. This indicates a SU(3)f flavor symmetry breaking or large contributions from low x. Analysis of gluon spin from inclusive DIS is difficult and ongoing T ...
... 1/3 of the proton spin comes from quark spin Direct measurements of the strange quark sea could not verify a negative strange polarization. This indicates a SU(3)f flavor symmetry breaking or large contributions from low x. Analysis of gluon spin from inclusive DIS is difficult and ongoing T ...
Nonlinear Phase Dynamics in a Driven Bosonic Josephson Junction
... With adjustable parameters, the BHH can also realize an atom interferometer, in which the bias, E, generates a phase shift that can be measured by atom-number counting. The interaction term allows for the creation of nonclassical input states, but also generates undesired phase-diffusion noise. Atom ...
... With adjustable parameters, the BHH can also realize an atom interferometer, in which the bias, E, generates a phase shift that can be measured by atom-number counting. The interaction term allows for the creation of nonclassical input states, but also generates undesired phase-diffusion noise. Atom ...
Centre de Physique Théorique
... keywords: mathematical description of physical systems, fonctional analysis, spectral analysis, partial differential equations, finite difference equations, constructive quantum field theory. - E10 Collective Phenomena and Out-of-Equilibrium Systems (Team leader: Claude-Alain Pillet; Effective staff ...
... keywords: mathematical description of physical systems, fonctional analysis, spectral analysis, partial differential equations, finite difference equations, constructive quantum field theory. - E10 Collective Phenomena and Out-of-Equilibrium Systems (Team leader: Claude-Alain Pillet; Effective staff ...
Multiple-User Quantum Information Theory for Optical Communication Channels Saikat Guha
... Prof. Jeffrey H. Shapiro. I have yet to meet someone as meticulous, detail-oriented, rigorous and organized as Prof. Shapiro. His mentoring style has always been to urge students to find for themselves the interesting questions to answer, and to help them by steering their thought processes in the r ...
... Prof. Jeffrey H. Shapiro. I have yet to meet someone as meticulous, detail-oriented, rigorous and organized as Prof. Shapiro. His mentoring style has always been to urge students to find for themselves the interesting questions to answer, and to help them by steering their thought processes in the r ...
Quantum Nonequilibrium Dynamics: Transport, Entanglement, and Thermalization
... which slowly relax to thermal equilibrium. Motivated by recent progresses in ultracold atom experiments, we first analyze transport phenomena of a population imbalanced two-component fermi gas with arbitrary strength of inter-species interaction in three dimension. Using the Boltzmann kinetic equati ...
... which slowly relax to thermal equilibrium. Motivated by recent progresses in ultracold atom experiments, we first analyze transport phenomena of a population imbalanced two-component fermi gas with arbitrary strength of inter-species interaction in three dimension. Using the Boltzmann kinetic equati ...
Paper - Quantum Electrodynamics in Graphene
... hard pressing. The angle of rubbing was also changed to observe variations. Graphite was placed between two chips and the chips were rubbed to observe any improvements. Wet deposition under liquids like water, acetone, isopropyl alcohol, and n-hexane was experimented. The wafer was heated in order ...
... hard pressing. The angle of rubbing was also changed to observe variations. Graphite was placed between two chips and the chips were rubbed to observe any improvements. Wet deposition under liquids like water, acetone, isopropyl alcohol, and n-hexane was experimented. The wafer was heated in order ...
"Loop Quantum Gravity" (Rovelli)
... For a relativist, on the other hand, the idea of a fundamental description of gravity in terms of physical excitations over a background space sounds physically wrong. The key lesson learned from general relativity is that there is no background metric space over which physics happens (except, of co ...
... For a relativist, on the other hand, the idea of a fundamental description of gravity in terms of physical excitations over a background space sounds physically wrong. The key lesson learned from general relativity is that there is no background metric space over which physics happens (except, of co ...
Quantum key distribution
Quantum key distribution (QKD) uses quantum mechanics to guarantee secure communication. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages. It is often incorrectly called quantum cryptography, as it is the most well known example of the group of quantum cryptographic tasks.An important and unique property of quantum key distribution is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This results from a fundamental aspect of quantum mechanics: the process of measuring a quantum system in general disturbs the system. A third party trying to eavesdrop on the key must in some way measure it, thus introducing detectable anomalies. By using quantum superpositions or quantum entanglement and transmitting information in quantum states, a communication system can be implemented which detects eavesdropping. If the level of eavesdropping is below a certain threshold, a key can be produced that is guaranteed to be secure (i.e. the eavesdropper has no information about it), otherwise no secure key is possible and communication is aborted.The security of encryption that uses quantum key distribution relies on the foundations of quantum mechanics, in contrast to traditional public key cryptography which relies on the computational difficulty of certain mathematical functions, and cannot provide any indication of eavesdropping at any point in the communication process, or any mathematical proof as to the actual complexity of reversing the one-way functions used. QKD has provable security based on information theory, and forward secrecy.Quantum key distribution is only used to produce and distribute a key, not to transmit any message data. This key can then be used with any chosen encryption algorithm to encrypt (and decrypt) a message, which can then be transmitted over a standard communication channel. The algorithm most commonly associated with QKD is the one-time pad, as it is provably secure when used with a secret, random key. In real world situations, it is often also used with encryption using symmetric key algorithms like the Advanced Encryption Standard algorithm. In the case of QKD this comparison is based on the assumption of perfect single-photon sources and detectors, that cannot be easily implemented.