slides
... went through one slit or the other. • [MATTER-‐WAVE] Each electron is a wave that went through both slits and interfered with itself. • [AGNOSTIC] We can’t say what the electron is doing between be ...
... went through one slit or the other. • [MATTER-‐WAVE] Each electron is a wave that went through both slits and interfered with itself. • [AGNOSTIC] We can’t say what the electron is doing between be ...
![ChemChapter_4[1]Light](http://s1.studyres.com/store/data/001894151_1-323884b777914f52c04d2bb917d4088a-300x300.png)
a pedagogical / historical introduction (D. Downes)
... The usual way to think of it. The usual diagram of radio interferometry is a space-space diagram. It’s a snapshot at an instant in time. ...
... The usual way to think of it. The usual diagram of radio interferometry is a space-space diagram. It’s a snapshot at an instant in time. ...
Quantum Information and Quantum Computation
... Over the last half century, the components of computers have gotten smaller by a factor of two every year and a half, the phenomenon known as Moore's law. In current computers, the smallest wires and transistors are coming close to a size of one hundred nanometers across, a thousand times the diamet ...
... Over the last half century, the components of computers have gotten smaller by a factor of two every year and a half, the phenomenon known as Moore's law. In current computers, the smallest wires and transistors are coming close to a size of one hundred nanometers across, a thousand times the diamet ...
Quantum Dots - Paula Schales Art
... CdSe and CdTe are wavelengths that are visible to the human eye; and InAs is at the infrared spectrum. This figure details the varying spectral codes of the materials which are color coded by semiconductor material listed in the legend. ...
... CdSe and CdTe are wavelengths that are visible to the human eye; and InAs is at the infrared spectrum. This figure details the varying spectral codes of the materials which are color coded by semiconductor material listed in the legend. ...
Session 3
... Abstract: Superintegrable systems with second order constants of the motion have been extensively studied and all such systems in 3D Euclidean space are known. This talk will present a classification of second order non-degenerate superintegrable systems on 3D conformally flat spaces. It will be sho ...
... Abstract: Superintegrable systems with second order constants of the motion have been extensively studied and all such systems in 3D Euclidean space are known. This talk will present a classification of second order non-degenerate superintegrable systems on 3D conformally flat spaces. It will be sho ...
Syllabus :
... the Newton formulation of mechanics and of basic electromagnetism and thermodynamics from introductory physics courses. ...
... the Newton formulation of mechanics and of basic electromagnetism and thermodynamics from introductory physics courses. ...
Quantum computing
... result of computation, this result is correct only with certain probability Quantum algorithms are designed to "shift" the probability towards correct result Running the same algorithm sufficiently many times you get the correct result with high probability, assuming that we can verify whether the r ...
... result of computation, this result is correct only with certain probability Quantum algorithms are designed to "shift" the probability towards correct result Running the same algorithm sufficiently many times you get the correct result with high probability, assuming that we can verify whether the r ...
Powerpoint 7/13
... Suppose we measure the first of two qubits in the computational basis. Then we can form the two projectors: ...
... Suppose we measure the first of two qubits in the computational basis. Then we can form the two projectors: ...
Quantum Mechanics - Indico
... At the Planck scale, Quantum Mechanics is not wrong, but its interpretation may have to be revised, not for philosophical reasons, but to enable us to construct more concise theories, recovering e.g. locality (which appears to have been lost in string theory). The “random numbers”, inherent in the u ...
... At the Planck scale, Quantum Mechanics is not wrong, but its interpretation may have to be revised, not for philosophical reasons, but to enable us to construct more concise theories, recovering e.g. locality (which appears to have been lost in string theory). The “random numbers”, inherent in the u ...
Illustration of the quantum central limit theorem by
... One of the easiest non-trivial examples of quantum probability is provided by independent addition of spins. The limit distribution is a non-commutative gaussian state. This has been proven by many previous papers e.g. [1], [2], [3]. The object of this paper is to calculate the distribution explicit ...
... One of the easiest non-trivial examples of quantum probability is provided by independent addition of spins. The limit distribution is a non-commutative gaussian state. This has been proven by many previous papers e.g. [1], [2], [3]. The object of this paper is to calculate the distribution explicit ...
Missing Link
... – But, by violating Bell’s inequality, its “having blocked the photon” was affected by the measurement of the other atom! ...
... – But, by violating Bell’s inequality, its “having blocked the photon” was affected by the measurement of the other atom! ...
Integrated devices for quantum information with polarization
... Aim of this project is to take advantage of the resource represented by the integrated waveguide technology in order to realize new complex quantum optical devices that would otherwise be unfeasible using large-scale bulk optics alone. In the last years different experiments were performed on integr ...
... Aim of this project is to take advantage of the resource represented by the integrated waveguide technology in order to realize new complex quantum optical devices that would otherwise be unfeasible using large-scale bulk optics alone. In the last years different experiments were performed on integr ...
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.