Units of information | Quantum computing
In quantum computing, a qubit (/ˈkjuːbɪt/) or quantum bit is a basic unit of quantum information—the quantum version of the classic binary bit physically realized with a two-state device. A qubit is a two-state (or two-level) quantum-mechanical system, one of the simplest quantum systems displaying the peculiarity of quantum mechanics. Examples include the spin of the electron in which the two levels can be taken as spin up and spin down; or the polarization of a single photon in which the two states can be taken to be the vertical polarization and the horizontal polarization. In a classical system, a bit would have to be in one state or the other. However, quantum mechanics allows the qubit to be in a coherent superposition of both states simultaneously, a property that is fundamental to quantum mechanics and quantum computing. (Wikipedia).
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Quantum Transport, Lecture 18: Coupled Qubits
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: experiments on two and more coupled flux qubits, transmons, and spin qubits. Quantum Transport course development supported in part by the National Science Foundation under grant DM
From playlist Quantum Transport
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From playlist Quantum (and Classical) Computing
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Upper-level undergraduate course taught at the University of Pittsburgh in the Fall 2015 semester by Sergey Frolov. The course is based on Steven Simon's "Oxford Solid State Basics" textbook. Lectures recorded using Panopto, to see them in Panopto viewer follow this link: https://pitt.host
From playlist Introduction to Solid State Physics
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Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: DiVincenzo criteria for hardware design of quantum bits, Rabi, Ramsey, spin echo experiments, candidate quantum bit systems. Quantum Transport course development supported in part b
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Quantum Transport, Lecture 16: Superconducting qubits
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: quantum electrical circuits - flux qubits, phase qubits and charge qubits. Quantum Transport course development supported in part by the National Science Foundation under grant DMR
From playlist Quantum Transport
Quantum Transport, Lecture 19: Quantum Outlook
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: surface code, d-wave quantum computer, topological quantum computation. Quantum Transport course development supported in part by the National Science Foundation under grant DMR CAR
From playlist Quantum Transport
Quantum Transport, Lecture 17: Quantum Hybrids
Instructor: Sergey Frolov, University of Pittsburgh, Spring 2013 http://sergeyfrolov.wordpress.com/ Summary: transmon qubits, microwave resonators, circuit QED. Quantum Transport course development supported in part by the National Science Foundation under grant DMR CAREER 1252962.
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