Quantum Error Correction (QEC) - ETH E
... construction. If we are able to implement such a set of universal gates we can compute what ever we want. But in quantum computation, infinitely many different gates exist. Implementing all of them is impossible. But fortunately, it turns out that also in quantum computation sets of universal quantu ...
... construction. If we are able to implement such a set of universal gates we can compute what ever we want. But in quantum computation, infinitely many different gates exist. Implementing all of them is impossible. But fortunately, it turns out that also in quantum computation sets of universal quantu ...
Superconducting Circuits and Quantum Computation—T. P. Orlando
... The energy levels of the ground state (dark line) and the first excited state (light line) are shown in Figure 1c near the applied magnetic field of 0.5 Φ0 in the qubit loop. Classically the Josephson energy of the two states would be degenerate at this bias magnetic field and increase or decrease l ...
... The energy levels of the ground state (dark line) and the first excited state (light line) are shown in Figure 1c near the applied magnetic field of 0.5 Φ0 in the qubit loop. Classically the Josephson energy of the two states would be degenerate at this bias magnetic field and increase or decrease l ...
The book of abstracts - MECO 42
... The Conferences of the Middle European Cooperation in Statistical Physics (MECO) were initiated in 1974 with the aim of bridging the gap between the communities of scientists from the Eastern and Western blocks of Europe, separated by the iron curtain. Since then, MECO conferences have become the ye ...
... The Conferences of the Middle European Cooperation in Statistical Physics (MECO) were initiated in 1974 with the aim of bridging the gap between the communities of scientists from the Eastern and Western blocks of Europe, separated by the iron curtain. Since then, MECO conferences have become the ye ...
72 063623 (2005) .
... = 0.003. Upper panel: Fidelity of four randomly chosen initial coherent states, with the smooth solid curve being the Gaussian fit to one of them. Lower panel: Averaged fidelity, with an average performed over 50 initial coherent states chosen randomly. ...
... = 0.003. Upper panel: Fidelity of four randomly chosen initial coherent states, with the smooth solid curve being the Gaussian fit to one of them. Lower panel: Averaged fidelity, with an average performed over 50 initial coherent states chosen randomly. ...
Toward Practical Solid-State Based Quantum Memories
... The figure shows the off-resonant Raman coupling that allows the absorption of a single-photon through the creation of a spin excitation. One can retrieve the stored photon by applying the same control field after the storage time. . . . . . . . . . (a) Shows the control field (red) and the input si ...
... The figure shows the off-resonant Raman coupling that allows the absorption of a single-photon through the creation of a spin excitation. One can retrieve the stored photon by applying the same control field after the storage time. . . . . . . . . . (a) Shows the control field (red) and the input si ...
Quantum Computation, Quantum Theory and AI
... Of course, physical implementations of scalable and functional quantum computers is one of the most important problems in quantum computation. But this topic will not be touched on in this paper simply because it lies outside my expertise. Another important topic not considered in this section for t ...
... Of course, physical implementations of scalable and functional quantum computers is one of the most important problems in quantum computation. But this topic will not be touched on in this paper simply because it lies outside my expertise. Another important topic not considered in this section for t ...
"Loop Quantum Gravity" (Rovelli)
... evolution, these notions have remained rather stable and self-consistent. In the first quarter of the last century, quantum theory and general relativity have deeply modified this foundation. The two theories have obtained solid success and vast experimental corroboration, and can now be considered ...
... evolution, these notions have remained rather stable and self-consistent. In the first quarter of the last century, quantum theory and general relativity have deeply modified this foundation. The two theories have obtained solid success and vast experimental corroboration, and can now be considered ...
Studies in Quantum Information Theory
... Carl Caves. Carl’s technical skills as a physicist are rivaled only by his personal support of his students—both past and present. Like Michael, Carl took me on in a visiting student role—in this case, for my advanced project. But I have known Carl for almost a decade. Beginning as a student in his ...
... Carl Caves. Carl’s technical skills as a physicist are rivaled only by his personal support of his students—both past and present. Like Michael, Carl took me on in a visiting student role—in this case, for my advanced project. But I have known Carl for almost a decade. Beginning as a student in his ...
Introduction to Quantum Information Science
... easy task. Of course we are also limited by the physical realization of a quantum computers to test these algorithms and perhaps create new ones. To date Shor's algorithm has been experimentally realized up to factoring 21, far from practical use. ...
... easy task. Of course we are also limited by the physical realization of a quantum computers to test these algorithms and perhaps create new ones. To date Shor's algorithm has been experimentally realized up to factoring 21, far from practical use. ...
Observing a coherent superposition of an atom and a
... Finally, the atom is measured in the 兵兩g典 , 兩e典其 basis. By controlling the magnitude of the phase shift between the pulses over many runs of the experiment, one observes socalled Ramsey fringes—oscillations in the probability of measuring the outcome corresponding to 兩g典 共or 兩e典兲 as a function of ...
... Finally, the atom is measured in the 兵兩g典 , 兩e典其 basis. By controlling the magnitude of the phase shift between the pulses over many runs of the experiment, one observes socalled Ramsey fringes—oscillations in the probability of measuring the outcome corresponding to 兩g典 共or 兩e典兲 as a function of ...
Quantum heating of a parametrically modulated oscillator: Spectral signatures M. Marthaler,
... of a resonantly driven oscillator coupled to a two-level system [12], and interesting spectral manifestations of the heating in such coupled system have been recently seen [13]. However, to the best of our knowledge, no direct measurements of the relaxation-induced distribution over quantum states h ...
... of a resonantly driven oscillator coupled to a two-level system [12], and interesting spectral manifestations of the heating in such coupled system have been recently seen [13]. However, to the best of our knowledge, no direct measurements of the relaxation-induced distribution over quantum states h ...
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.