Quantum Computation

  title={Quantum Computation},
  author={David P. DiVincenzo},
  pages={255 - 261}
If the bits of computers are someday scaled down to the size of individual atoms, quantum mechanical effects may profoundly change the nature of computation itself. The wave function of such a quantum computer could consist of a superposition of many computations carried out simultaneously; this kind of parallelism could be exploited to make some important computational problems, like the prime factoring of large integers, tractable. However, building such a quantum computer would place… Expand
79 Citations
Preparation of pseudo-pure states for NMR quantum computing with one ancillary qubit
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A brief survey of present-day achievements in quantum informatics is presented. Advantages of quantum computers are shown by an example of simplest quantum algorithms. Application of ultracold atomsExpand
Scheme for realizing quantum dense coding via entanglement swapping
Quantum dense coding is a protocol for transmitting two classical bits of information from a sender (Alice) to a remote receiver (Bob) by sending only one quantum bit (qubit). In this article, weExpand
The Second Quantum Revolution: Role and Challenges of Molecular Chemistry.
The role that molecular chemistry can have in the current second quantum revolution, i.e., the use of quantum physics principles to create new quantum technologies, is highlighted by identifying the key advances recently made by the molecular chemistry community. Expand
Scalable multi-qubit quantum gates in quantum networks based on the microtoroidal-resonator-mediated nitrogen-vacancy centers in diamond
The modularized design of multi-qubit quantum gates can be extended to other quantum platforms, which may lead to more efficient construction of quantum networks for distributed quantum computation and quantum communication. Expand
Quantum witness of a damped qubit with generalized measurements
We evaluate the quantum witness based on the no-signaling-in-time condition of a damped two-level system for nonselective generalized measurements of varying strength. We explicitly compute itsExpand
Protection of Logical Qubits via Optimal State Transfers
This work develops an efficient dynamical-decoupling-based strategy to create the decoherence-free subspaces (DFSs) for a set of qubits by optimally transferring the states of these qubits. Expand
Properties of Pancharatnam Phase and Entanglement of a Five-Level Atom Interacting with a Squeezed Field
We introduce a quantum scheme where a single five-level atom interacts with a single-mode cavity field by a time-dependent coupling. During the interaction, the temporal behavior of the quantumExpand
Self-induced transparency in a flux-qubit chain
Abstract We introduce a quantum superconducting metamaterial design constituted of flux qubits that operate as artificial atoms and analyze the dynamics of an injected electromagnetic pulse in theExpand
Resources of nonlinear cavity magnonics for quantum information
We theoretically explore nonlinearities of ferromagnets in microwave cavities in the classical and quantum regimes, and assess the resources for quantum information, i.e. fluctuation squeezing andExpand


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