TITLE

Pseudo-digital quantum bits

AUTHOR(S)
Friesen, Mark; Joynt, Robert; Eriksson, M. A.
PUB. DATE
December 2002
SOURCE
Applied Physics Letters;12/9/2002, Vol. 81 Issue 24, p4619
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Quantum computers are analog devices; thus they are highly susceptible to accumulative errors arising from classical control electronics. Fast operation—as necessitated by decoherence—makes gating errors very likely. In most current designs for scalable quantum computers, it is not possible to satisfy both the requirements of low decoherence errors and low gating errors. Here, we introduce a hardware-based technique for pseudo-digital gate operation. We perform self-consistent simulations of semiconductor quantum dots, finding that pseudo-digital techniques reduce operational error rates by more than two orders of magnitude, thus facilitating fast operation.
ACCESSION #
8633256

 

Related Articles

  • Quantum controlled-NOT gate based on a single quantum dot. Molotkov, S. N. // JETP Letters;8/10/96, Vol. 64 Issue 3, p237 

    A realization of a quantum controlled-NOT gate based on a single quantum dot is proposed. � 1996 American Institute of Physics.

  • Elementary quantum-dot gates for single-electron computing. Krasheninnikov, A. V.; Openov, L. A. // JETP Letters;8/10/96, Vol. 64 Issue 3, p231 

    A new approach to the implementation of certain logical functions in quantum-dot gates for single-electron computing is proposed. It is shown that placing a gate in a uniform external magnetic field allows one to construct gates with 1) symmetric physical truth tables and 2) large (in some cases...

  • Molecular states of laterally coupled quantum dots under electric fields. Teofilo Corredor, Carlos; Gutiérrez, Willian // Revista Facultad de Ingenieria Universidad de Antioquia;jun2014, Issue 71, p17 

    The states of a single electron trapped in two laterally coupled quantum dots are studied theoretically in the framework of the effective mass and envelope function approximations. The electron tunneling between dots is studied by varying of inter-dot distance and we showed that the lateral...

  • One at a time, please. Bayer, Manfred // Nature;8/8/2002, Vol. 418 Issue 6898, p597 

    Describes how semiconductor quantum dots could become the basis for the development of quantum computers. Features of quantum dots; Information on the exciton Rabi oscillations in single quantum dots.

  • Quantum Dots Controlled.  // Australasian Science;May2010, Vol. 31 Issue 4, p7 

    The article discusses research done on the potential of magnetic quantum dots to increase the speed and power of computers by Jin Zou of Queensland University's Faculty of Engineering, Architecture and Information Technology.

  • Lighting the way to quantum computing.  // Electro Optics;Dec2016/Jan2017, Issue 269, p42 

    The article focuses on building quantum computing by applying quantum dot light-emitting diodes (LED) which can produce entangled photons.

  • g-factor anisotropy in nanowire-based InAs quantum dots. d'Hollosy, Samuel; Fábián, Gábor; Baumgartner, Andreas; Nygård, Jesper; Schönenberger, Christian // AIP Conference Proceedings;Dec2013, Vol. 1566 Issue 1, p359 

    The determination and control of the electron g-factor in semiconductor quantum dots (QDs) are fundamental prerequisites in modern concepts of spintronics and spin-based quantum computation. We study the dependence of the gfactor on the orientation of an external magnetic field in quantum dots...

  • Untitled. Bush, Steve // Electronics Weekly;6/2/2010, Issue 2430, p17 

    The article reports on the quantum dot transistor for sprintonics and quantum computing research, developed by Australian scientists. As stated by Michelle Simmons, research head of the project, this device is fully made of crystalline silicon. It further reports on the technology and process of...

  • Silicon qubit for quantum computing can scale to two dimensional arrays. Bush, Steve // Electronics Weekly;8/31/2005, Issue 2207, p7 

    The article reports on the development of a silicon qubit for quantum computing by Hitachi Cambridge Laboratory, which looks to be scalable to two-dimensional arrays. To work, each of the qubits in a quantum computer have to exist in a superposition of two states for long enough to be useful....

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics