Optical and Quantum Communications—J. H. Shapiro, N. C. Wong
... We are embarked on research in the area of quantum information technology whose goal is to enable the quantum-mechanical information transmission, storage, and processing needed for future applications in quantum computing and quantum communication. Our theoretical work in this area has focused on a ...
... We are embarked on research in the area of quantum information technology whose goal is to enable the quantum-mechanical information transmission, storage, and processing needed for future applications in quantum computing and quantum communication. Our theoretical work in this area has focused on a ...
atom interferometer - Center for Ultracold Atoms
... Ramsey's separated oscillatory field method and have demonstrated an interferometer capable of manipulating longitudinal momentum coherences. We used this to determine the complete description of the quantum state of a matter wave beam, by measuring its density matrix or Wigner function. We used thi ...
... Ramsey's separated oscillatory field method and have demonstrated an interferometer capable of manipulating longitudinal momentum coherences. We used this to determine the complete description of the quantum state of a matter wave beam, by measuring its density matrix or Wigner function. We used thi ...
Finding a Better-than-Classical Quantum AND/OR Algorithm using
... problems faster than any classical algorithm. Unfortunately, the discovery of Shor's algorithm for factoring large composite integers was not followed by a wave of new quantum algorithms for lots of other problems. To date, there are only about seven quantum algorithms known. [9, p. ...
... problems faster than any classical algorithm. Unfortunately, the discovery of Shor's algorithm for factoring large composite integers was not followed by a wave of new quantum algorithms for lots of other problems. To date, there are only about seven quantum algorithms known. [9, p. ...
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... the throughput, but they do not reduce the teleportation fidelity achieved by the MIT/NU architecture. Because OPA sources can produce more than one pair in a loading interval, we are not guaranteed that the desired singlet state has been loaded into the two quantum memories when no cycling fluorescen ...
... the throughput, but they do not reduce the teleportation fidelity achieved by the MIT/NU architecture. Because OPA sources can produce more than one pair in a loading interval, we are not guaranteed that the desired singlet state has been loaded into the two quantum memories when no cycling fluorescen ...
PROBABILITIES FOR SINGLE EVENTS
... II.1. Probability II.1.1. Probabilities in general Even apart from quantum mechanics, there is no certainty in this world and therefore physics deals in probabilities. It deals most generally with the probabilities for alternative time histories of the universe. From these, conditional probabilities ...
... II.1. Probability II.1.1. Probabilities in general Even apart from quantum mechanics, there is no certainty in this world and therefore physics deals in probabilities. It deals most generally with the probabilities for alternative time histories of the universe. From these, conditional probabilities ...
Identifying student and teacher difficulties in interpreting
... model was the explanation of the known spectral frequencies of the hydrogen atom. To achieve this, it was necessary to abandon the classical model whereby a charged oscillator emits electromagnetic waves characterized by a frequency that is identical to the oscillation frequency of the emitter syste ...
... model was the explanation of the known spectral frequencies of the hydrogen atom. To achieve this, it was necessary to abandon the classical model whereby a charged oscillator emits electromagnetic waves characterized by a frequency that is identical to the oscillation frequency of the emitter syste ...
Experimental Implementation of Encoded Logical Qubit Operations
... To assess the usefulness of the scheme, we compare the achieved fidelities to an idealized experiment where we do not use QEC, but the same 16 error conditions can occur, with equal probabilities. In this case, the three single-qubit errors acting on the first qubit result in zero fidelity, while th ...
... To assess the usefulness of the scheme, we compare the achieved fidelities to an idealized experiment where we do not use QEC, but the same 16 error conditions can occur, with equal probabilities. In this case, the three single-qubit errors acting on the first qubit result in zero fidelity, while th ...
What is reality? - Brian Whitworth
... i. Performance. A non-physical quantum quintessence isn’t subject to physical limits, and quantum (not classical) processing in a client-server link can create the information we call the physical world. ii. Infinite regress. A non-physical network has no physical regress, quantum processing has no ...
... i. Performance. A non-physical quantum quintessence isn’t subject to physical limits, and quantum (not classical) processing in a client-server link can create the information we call the physical world. ii. Infinite regress. A non-physical network has no physical regress, quantum processing has no ...
4. Non-Abelian Quantum Hall States
... This simple observation is really the key bit of magic captured by the Moore-Read excitations. The “internal” degrees of freedom described by the Hilbert space of dimension 2n 1 are not associated to any individual quasi-hole and they can’t be seen by looking at any local part of the wavefunction. I ...
... This simple observation is really the key bit of magic captured by the Moore-Read excitations. The “internal” degrees of freedom described by the Hilbert space of dimension 2n 1 are not associated to any individual quasi-hole and they can’t be seen by looking at any local part of the wavefunction. I ...
ANTI-MATTER FROM PRIMORDIAL BLACK HOLES
... Within the Wheeler, Misner and DeWitt QGD, the BB singularity is not resolved could it be different in the specific quantum theory of Riemannian geometry called LQG? KEY questions: How close to the BB does smooth space-time make sense ? Is inflation safe ? Is the BB singularity solved as the hydro ...
... Within the Wheeler, Misner and DeWitt QGD, the BB singularity is not resolved could it be different in the specific quantum theory of Riemannian geometry called LQG? KEY questions: How close to the BB does smooth space-time make sense ? Is inflation safe ? Is the BB singularity solved as the hydro ...
Max Born
Max Born (German: [bɔɐ̯n]; 11 December 1882 – 5 January 1970) was a German physicist and mathematician who was instrumental in the development of quantum mechanics. He also made contributions to solid-state physics and optics and supervised the work of a number of notable physicists in the 1920s and 30s. Born won the 1954 Nobel Prize in Physics for his ""fundamental research in Quantum Mechanics, especially in the statistical interpretation of the wave function"".Born was born in 1882 in Breslau, then in Germany, now in Poland and known as Wrocław. He entered the University of Göttingen in 1904, where he found the three renowned mathematicians, Felix Klein, David Hilbert and Hermann Minkowski. He wrote his Ph.D. thesis on the subject of ""Stability of Elastica in a Plane and Space"", winning the University's Philosophy Faculty Prize. In 1905, he began researching special relativity with Minkowski, and subsequently wrote his habilitation thesis on the Thomson model of the atom. A chance meeting with Fritz Haber in Berlin in 1918 led to discussion of the manner in which an ionic compound is formed when a metal reacts with a halogen, which is today known as the Born–Haber cycle.In the First World War after originally being placed as a radio operator, due to his specialist knowledge he was moved to research duties regarding sound ranging. In 1921, Born returned to Göttingen, arranging another chair for his long-time friend and colleague James Franck. Under Born, Göttingen became one of the world's foremost centres for physics. In 1925, Born and Werner Heisenberg formulated the matrix mechanics representation of quantum mechanics. The following year, he formulated the now-standard interpretation of the probability density function for ψ*ψ in the Schrödinger equation, for which he was awarded the Nobel Prize in 1954. His influence extended far beyond his own research. Max Delbrück, Siegfried Flügge, Friedrich Hund, Pascual Jordan, Maria Goeppert-Mayer, Lothar Wolfgang Nordheim, Robert Oppenheimer, and Victor Weisskopf all received their Ph.D. degrees under Born at Göttingen, and his assistants included Enrico Fermi, Werner Heisenberg, Gerhard Herzberg, Friedrich Hund, Pascual Jordan, Wolfgang Pauli, Léon Rosenfeld, Edward Teller, and Eugene Wigner.In January 1933, the Nazi Party came to power in Germany, and Born, who was Jewish, was suspended. He emigrated to Britain, where he took a job at St John's College, Cambridge, and wrote a popular science book, The Restless Universe, as well as Atomic Physics, which soon became a standard text book. In October 1936, he became the Tait Professor of Natural Philosophy at the University of Edinburgh, where, working with German-born assistants E. Walter Kellermann and Klaus Fuchs, he continued his research into physics. Max Born became a naturalised British subject on 31 August 1939, one day before World War II broke out in Europe. He remained at Edinburgh until 1952. He retired to Bad Pyrmont, in West Germany. He died in hospital in Göttingen on 5 January 1970.