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... A mapping is obtained relating radial screened Coulomb systems with low screening parameters to radial anharmonic oscillators in N-dimensional space. Using the formalism of supersymmetric quantum mechanics, it is shown that exact solutions of these potentials exist when the parameters satisfy certai ...
... A mapping is obtained relating radial screened Coulomb systems with low screening parameters to radial anharmonic oscillators in N-dimensional space. Using the formalism of supersymmetric quantum mechanics, it is shown that exact solutions of these potentials exist when the parameters satisfy certai ...
1 CONSCIOUSNESS, SITUATIONS, AND THE
... whole field of notions which was invoked in relation to the measurement problem of quantum mechanics. Mind as the most specific part of the self; mental acts; introspective power; and privileged access which can be used as an argument for solipsism. Here again, I don’t want to discard but rather to ...
... whole field of notions which was invoked in relation to the measurement problem of quantum mechanics. Mind as the most specific part of the self; mental acts; introspective power; and privileged access which can be used as an argument for solipsism. Here again, I don’t want to discard but rather to ...
quantum effects in biology - Assets
... world which we know as quantum mechanics was first formulated nearly 90 years ago, and its predictions tested in the laboratory, most of the experiments in question were on systems which were both very well characterized and reasonably well isolated from their environments, such as single electrons ...
... world which we know as quantum mechanics was first formulated nearly 90 years ago, and its predictions tested in the laboratory, most of the experiments in question were on systems which were both very well characterized and reasonably well isolated from their environments, such as single electrons ...
Slide 1
... “2” & “3” never interact with each other, but entanglement is set-up by their separate interactions with “1”. S. Adhikari, A. S. Majumdar, D. Home, A. K. Pan, EPL 89, 10005 (2010) ...
... “2” & “3” never interact with each other, but entanglement is set-up by their separate interactions with “1”. S. Adhikari, A. S. Majumdar, D. Home, A. K. Pan, EPL 89, 10005 (2010) ...
A Study of Topological Quantum Error Correcting Codes Part I: From
... Here we only attempt to present one slice of a very large field, starting from scratch and building up to quantum surface codes. We will emphasize connections to classical coding theory along the way. In Part I: We start by reviewing some classical coding theory, then introduce the quantum setting, ...
... Here we only attempt to present one slice of a very large field, starting from scratch and building up to quantum surface codes. We will emphasize connections to classical coding theory along the way. In Part I: We start by reviewing some classical coding theory, then introduce the quantum setting, ...
ppt - Harvard Condensed Matter Theory group
... Explicit quantum mechanical wavefunction can be found ...
... Explicit quantum mechanical wavefunction can be found ...
Quantum Physics
... and x ∝ Nx = N cos2 , y ∝ Ny = N sin2 in the limit N → . However, the fate of an individual photon cannot be predicted. We can only know its probability of detection by Dx or Dy . The need to resort to probabilities is an intrinsic feature of quantum physics, whereas in classical physics resortin ...
... and x ∝ Nx = N cos2 , y ∝ Ny = N sin2 in the limit N → . However, the fate of an individual photon cannot be predicted. We can only know its probability of detection by Dx or Dy . The need to resort to probabilities is an intrinsic feature of quantum physics, whereas in classical physics resortin ...
Working Group "Young DPG" Arbeitsgruppe junge DPG (AGjDPG
... rational mechanics. Society was fascinated by Newtons insights and economists based their theory on classical mechanics with the explicit aim to make economics a rational science as well. But instead of adopting Newtons laws of motion they employed the simplified principle of general maximization. W ...
... rational mechanics. Society was fascinated by Newtons insights and economists based their theory on classical mechanics with the explicit aim to make economics a rational science as well. But instead of adopting Newtons laws of motion they employed the simplified principle of general maximization. W ...
A Monte Carlo model of light propagation in tissue
... • The probability that a measurement yielding a value of x will lie in the interval [0,x1] is given by the cumulative distribution function. ...
... • The probability that a measurement yielding a value of x will lie in the interval [0,x1] is given by the cumulative distribution function. ...
Creating and Detecting Micro-Macro Photon
... based on parametric down-conversion [7–9]. The latter area has recently seen significant activity, a lot of which was stimulated by Ref. [9], which claimed the creation and detection of entanglement in polarization between a single photon on one side and thousands of photons on the other. The state ...
... based on parametric down-conversion [7–9]. The latter area has recently seen significant activity, a lot of which was stimulated by Ref. [9], which claimed the creation and detection of entanglement in polarization between a single photon on one side and thousands of photons on the other. The state ...
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.