Quantum information processing with superconducting qubits in a
... the Rabi oscillation with a single excitation quantum of the resonator (as opposed to one or more photons), and (c) no quantum computing scheme. We study the Cooper-pair box with a SQUID loop. In this structure, the superconducting island with Cooperpair charge Q = 2ne is coupled to a segment of a s ...
... the Rabi oscillation with a single excitation quantum of the resonator (as opposed to one or more photons), and (c) no quantum computing scheme. We study the Cooper-pair box with a SQUID loop. In this structure, the superconducting island with Cooperpair charge Q = 2ne is coupled to a segment of a s ...
HW1 solutions - Colorado State University Computer Science
... INSTRUCTOR: Yashwant K Malaiya HW1 CPU Scheduling ...
... INSTRUCTOR: Yashwant K Malaiya HW1 CPU Scheduling ...
1 Introduction and Disclaimer
... We will sketch the computation by Maulik and Okounkov of the quantum cohomology of Hilbn C2 . As you will see, the proof is somewhat indirect, but the methods used apply to general quiver varieties, and yield a variety of other great results. See [3] for a more direct proof. Due to limitations in sp ...
... We will sketch the computation by Maulik and Okounkov of the quantum cohomology of Hilbn C2 . As you will see, the proof is somewhat indirect, but the methods used apply to general quiver varieties, and yield a variety of other great results. See [3] for a more direct proof. Due to limitations in sp ...
preskill-ARO-2013 - Caltech Particle Theory
... For reliable quantum computing, we need not just very stable qubits, but also the ability to apply very accurate nontrivial quantum gates to the qubits. Accurate (Clifford group) phase gates can be applied to 0-Pi qubits by turning on and off the coupling between a qubit (or pair of qubits) and a ha ...
... For reliable quantum computing, we need not just very stable qubits, but also the ability to apply very accurate nontrivial quantum gates to the qubits. Accurate (Clifford group) phase gates can be applied to 0-Pi qubits by turning on and off the coupling between a qubit (or pair of qubits) and a ha ...
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... great real-world importance. For example, certain widely used encryption methods could be cracked given a computer capable of breaking a large number into its component factors within a reasonable length of time. Virtually all encryption methods used for highly sensitive data are vulnerable to one q ...
... great real-world importance. For example, certain widely used encryption methods could be cracked given a computer capable of breaking a large number into its component factors within a reasonable length of time. Virtually all encryption methods used for highly sensitive data are vulnerable to one q ...
Talk Slides (pptx file) - University of Missouri
... by a new kind of force, the quantum potential. Unlike all other potentials in physics its effects do not depend upon the strength or "size" of the potential but only on its form. It is for this reason that distant objects can exert a strong influence on the motion of an electron. By this idea all pa ...
... by a new kind of force, the quantum potential. Unlike all other potentials in physics its effects do not depend upon the strength or "size" of the potential but only on its form. It is for this reason that distant objects can exert a strong influence on the motion of an electron. By this idea all pa ...
Quantum spin systems from the perspective of quantum information
... role: related to thermodynamic properties, to cross sections, detect longrange order and quantum phase transitions, define length scale … ...
... role: related to thermodynamic properties, to cross sections, detect longrange order and quantum phase transitions, define length scale … ...
Persistent currents controlled by non-classical electromagnetic fields J. D
... where the phase δ ∈ 〈0, 2π) reflects the different superpositions of the two lowest number eigenstates of the non-classical field. The qubit is a quantum mechanical analogue of the bit and is subject to intensive research itself. In our case, it is the most general state of the electromagnetic field ...
... where the phase δ ∈ 〈0, 2π) reflects the different superpositions of the two lowest number eigenstates of the non-classical field. The qubit is a quantum mechanical analogue of the bit and is subject to intensive research itself. In our case, it is the most general state of the electromagnetic field ...
Physics from Computer Science — a position statement —
... the same, and the manipulations of complex numbers, vectors and matrices in “computational bases” built from kets |0i and |1i bear some comparison with the acrobatics with bits and bytes in the early days of computer programming. On the other hand, many important questions on Quantum Informatics rem ...
... the same, and the manipulations of complex numbers, vectors and matrices in “computational bases” built from kets |0i and |1i bear some comparison with the acrobatics with bits and bytes in the early days of computer programming. On the other hand, many important questions on Quantum Informatics rem ...
Chromium: a spin qubit with large spin to strain
... Quantum two level systems (“qubits”) strongly coupled to mechanical resonators can function as hybrid quantum systems with several potential applications in quantum information science. Access to a strong coupling regime, where non-classical states of a mechanical resonator are generated, could be a ...
... Quantum two level systems (“qubits”) strongly coupled to mechanical resonators can function as hybrid quantum systems with several potential applications in quantum information science. Access to a strong coupling regime, where non-classical states of a mechanical resonator are generated, could be a ...
quantum computer - Caltech Particle Theory
... Three Questions About Quantum Computers 1. Why build one? How will we use it, and what will we learn from it? 2. Can we build one? Are there obstacles that will prevent us from building quantum computers as a matter of principle? 3. How will we build one? What kind of quantum hardware is potentiall ...
... Three Questions About Quantum Computers 1. Why build one? How will we use it, and what will we learn from it? 2. Can we build one? Are there obstacles that will prevent us from building quantum computers as a matter of principle? 3. How will we build one? What kind of quantum hardware is potentiall ...
The Quantum Error Correcting Criteria
... Ek . If l = k this implies that the code words are not distorted by the effect of error Ek . They may be rotated, but the inner product between all codewords will be the same before as after (up to a full normalization factor.) In our example of quantum error correcting codes for the bit flip code, ...
... Ek . If l = k this implies that the code words are not distorted by the effect of error Ek . They may be rotated, but the inner product between all codewords will be the same before as after (up to a full normalization factor.) In our example of quantum error correcting codes for the bit flip code, ...
Quantum computing
Quantum computing studies theoretical computation systems (quantum computers) that make direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits (qubits), which can be in superpositions of states. A quantum Turing machine is a theoretical model of such a computer, and is also known as the universal quantum computer. Quantum computers share theoretical similarities with non-deterministic and probabilistic computers. The field of quantum computing was initiated by the work of Yuri Manin in 1980, Richard Feynman in 1982, and David Deutsch in 1985. A quantum computer with spins as quantum bits was also formulated for use as a quantum space–time in 1968.As of 2015, the development of actual quantum computers is still in its infancy, but experiments have been carried out in which quantum computational operations were executed on a very small number of quantum bits. Both practical and theoretical research continues, and many national governments and military agencies are funding quantum computing research in an effort to develop quantum computers for civilian, business, trade, and national security purposes, such as cryptanalysis.Large-scale quantum computers will be able to solve certain problems much more quickly than any classical computers that use even the best currently known algorithms, like integer factorization using Shor's algorithm or the simulation of quantum many-body systems. There exist quantum algorithms, such as Simon's algorithm, that run faster than any possible probabilistic classical algorithm.Given sufficient computational resources, however, a classical computer could be made to simulate any quantum algorithm, as quantum computation does not violate the Church–Turing thesis.