The Experts below are selected from a list of 35760 Experts worldwide ranked by ideXlab platform

Akira Furusawa - One of the best experts on this subject based on the ideXlab platform.

  • hybrid Quantum Information Processing a way for large scale optical Quantum Information Processing
    European Quantum Electronics Conference, 2017
    Co-Authors: Akira Furusawa
    Abstract:

    We are working on hybrid Quantum Information Processing, which combines two methodologies of Quantum Information Processing — qubit and continuous variable (CV) [1]. More precisely, we encode logical qubits by using CV methodology and utilize CV Quantum processors for the realization of a fault-tolerant large-scale universal optical Quantum computer. The advantage of this methodology is that we can have both high-fidelity nature of qubits and determinisity of CV Quantum processors. In other words, we can enjoy both particle- and wave-nature of Quantum mechanics. Towards this goal we performed various things, which include Quantum error correction with nine-party CV entanglement [2], teleportation of Schrodinger's cat state [3], adaptive homodyne measurement with phase-squeezed states [4], deterministic teleportation of time-bin qubits [5], creation of ultra-large-scale CV cluster states [6], generation and measurement of CV entanglement on a chip [7], and synchronization of photons with cavity-based Quantum memories [8].

  • optical hybrid Quantum Information Processing
    arXiv: Quantum Physics, 2016
    Co-Authors: Shuntaro Takeda, Akira Furusawa
    Abstract:

    Historically, two complementary approaches to optical Quantum Information Processing have been pursued: qubits and continuous-variables, each exploiting either particle or wave nature of light. However, both approaches have pros and cons. In recent years, there has been a significant progress in combining both approaches with a view to realizing hybrid protocols that overcome the current limitations. In this chapter, we first review the development of the two approaches with a special focus on Quantum teleportation and its applications. We then introduce our recent research progress in realizing Quantum teleportation by a hybrid scheme, and mention its future applications to universal and fault-tolerant Quantum Information Processing.

  • Hybrid Quantum Information Processing
    Frontiers in Optics 2016, 2016
    Co-Authors: Akira Furusawa
    Abstract:

    Hybridization of qubit and continuous-variable Quantum Information Processing (QIP) enables us to realize high-fidelity and efficient QIP. I will show our research activities for that direction.

  • Quantum Teleportation and Entanglement: A Hybrid Approach to Optical Quantum Information Processing - Hybrid Quantum Information Processing
    2014
    Co-Authors: Akira Furusawa
    Abstract:

    I will briefly explain the definition and advantage of hybrid Quantum Information Processing, which is hybridization of qubit and continuous-variable technologies. The final goal would be realization of universal gate sets both for qubit and continuous-variable Quantum Information Processing with the hybrid technologies. For that purpose, qubit teleportation with a continuousvariable teleporter is one of the most important ingredients.

  • hybrid Quantum Information Processing
    INTERNATIONAL CONFERENCE ON QUANTITATIVE SCIENCES AND ITS APPLICATIONS (ICOQSIA 2014): Proceedings of the 3rd International Conference on Quantitative, 2014
    Co-Authors: Akira Furusawa
    Abstract:

    I will briefly explain the definition and advantage of hybrid Quantum Information Processing, which is hybridization of qubit and continuous-variable technologies. The final goal would be realization of universal gate sets both for qubit and continuous-variable Quantum Information Processing with the hybrid technologies. For that purpose, qubit teleportation with a continuousvariable teleporter is one of the most important ingredients.

Igor Aharonovich - One of the best experts on this subject based on the ideXlab platform.

  • Promising directions in diamond technologies for Quantum Information Processing (QIP) and sensing
    Quantum Information Processing with Diamond, 2014
    Co-Authors: Igor Aharonovich, Steven Prawer
    Abstract:

    Abstract: This final chapter summarizes some of the emerging topics in the usage of diamond for Quantum Information Processing. Practical applications include biosensing and bioimaging using colour centres in diamond, as well as pathways towards integrated Quantum photonics using diamond as a platform. On the other hand, challenges will be discussed, including surface terminations and engineering new, superior optically active defects. Finally, we discuss the outlook for the field of Quantum Information Processing (QIP) with diamond.

  • Quantum Information Processing with diamond principles and applications
    2014
    Co-Authors: S Prawer, Igor Aharonovich
    Abstract:

    Part 1 Fundamentals, fabrication and characterisation: Principles of Quantum cryptography Principles of de-coherence imaging and magnetometry Ion implantation in diamond Characterization of defects in diamond at the single dopant level. Part 2 Quantum Information Processing using diamond: Single photon sources and their application for Quantum key distribution Engineering control of diamond optical sensors Fundamental experiments using diamond. Part 3 Applications: Live cell imaging using nanodiamonds Diamond magnetic sensors Neutral circuits and in vivo monitoring of processes at the molecular scale Coupling nitrogen vacancy centres in diamond superconducting resonators.

  • homoepitaxial growth of single crystal diamond membranes for Quantum Information Processing
    Advanced Materials, 2012
    Co-Authors: Igor Aharonovich, Jonathan C Lee, Andrew P Magyar, B B Buckley, Christopher G Yale, D D Awschalom
    Abstract:

    Homoepitaxial growth of single crystal diamond membranes is demonstrated employing a microwave plasma chemical vapor deposition technique. The membranes possess excellent structural, optical, and spin properties, which make them suitable for fabrication of optical microcavities for applications in Quantum Information Processing, photonics, spintronics, and sensing.

Matthias Steffen - One of the best experts on this subject based on the ideXlab platform.

  • NMR Quantum Information Processing
    Quantum Information Processing, 2004
    Co-Authors: Chandrasekhar Ramanathan, Isaac L. Chuang, Nicolas Boulant, Zhiying Chen, David G. Cory, Matthias Steffen
    Abstract:

    Nuclear magnetic resonance (NMR) has provided a valuable experimental testbed for Quantum Information Processing (QIP). Here, we briefly review the use of nuclear spins as qubits, and discuss the current status of NMR-QIP. Advances in the techniques available for control are described along with the various implementations of Quantum algorithms and Quantum simulations that have been performed using NMR. The recent application of NMR control techniques to other Quantum computing systems are reviewed before concluding with a description of the efforts currently underway to transition to solid state NMR systems that hold promise for scalable architectures.

Pieter Kok - One of the best experts on this subject based on the ideXlab platform.

  • Photonic Quantum Information Processing
    Contemporary Physics, 2016
    Co-Authors: Pieter Kok
    Abstract:

    Information Processing with light is ubiquitous, from communication, metrology and imaging to computing. When we consider light as a Quantum mechanical object, new ways of Information Processing become possible. In this review I give an overview of how Quantum Information Processing can be implemented with single photons, and what hurdles still need to be overcome to implement the various applications in practice. I will place special emphasis on the Quantum mechanical properties of light that make it different from classical light, and how these properties relate to Quantum Information Processing tasks.

David G. Cory - One of the best experts on this subject based on the ideXlab platform.

  • NMR Quantum Information Processing
    Quantum Information Processing, 2004
    Co-Authors: Chandrasekhar Ramanathan, Isaac L. Chuang, Nicolas Boulant, Zhiying Chen, David G. Cory, Matthias Steffen
    Abstract:

    Nuclear magnetic resonance (NMR) has provided a valuable experimental testbed for Quantum Information Processing (QIP). Here, we briefly review the use of nuclear spins as qubits, and discuss the current status of NMR-QIP. Advances in the techniques available for control are described along with the various implementations of Quantum algorithms and Quantum simulations that have been performed using NMR. The recent application of NMR control techniques to other Quantum computing systems are reviewed before concluding with a description of the efforts currently underway to transition to solid state NMR systems that hold promise for scalable architectures.

  • Incoherent noise and Quantum Information Processing.
    The Journal of chemical physics, 2004
    Co-Authors: Nicolas Boulant, David G. Cory, Joseph Emerson, Timothy F. Havel, S. Furuta
    Abstract:

    Incoherence in the controlled Hamiltonian is an important limitation on the precision of coherent control in Quantum Information Processing. Incoherence can typically be modeled as a distribution of unitary processes arising from slowly varying experimental parameters. We show how it introduces artifacts in Quantum process tomography and we explain how the resulting estimate of the superoperator may not be completely positive. We then go on to attack the inverse problem of extracting an effective distribution of unitaries that characterizes the incoherence via a perturbation theory analysis of the superoperator eigenvalue spectra.

  • NMR Quantum Information Processing and Entanglement
    arXiv: Quantum Physics, 2001
    Co-Authors: Raymond Laflamme, David G. Cory, C. Negrevergne, Lorenza Viola
    Abstract:

    In this essay we discuss the issue of Quantum Information and recent nuclear magnetic resonance (NMR) experiments. We explain why these experiments should be regarded as Quantum Information Processing (QIP) despite the fact that, in present liquid state NMR experiments, no entanglement is found. We comment on how these experiments contribute to the future of QIP and include a brief discussion on the origin of the power of Quantum computers.