American Journal of Computer Science and Information Technology

Overcooled gas flow assisted quantum computing

EuroSciCon Joint Event on Laser Optics & Photonics and Atomic & Plasma Science
July 16-17, 2018 Prague , Czech republic

Konstantin A Lyakhov, A N Pechen and H-J Lee

Institute for Nuclear Science and Technology, Jeju National University, South Korea Laboratory of Mathematical Methods for Quantum Technologies of Steklov Mathematical Institute, Russia

ScientificTracks Abstracts: Am J Compt Sci Inform Technol

DOI: 10.21767/2349-3917-C1-002

Abstract

This paper is addressed to possibility of implementation of quantum computations by resonant excitation of target isotopologues in the gas flow. Population of quantum states of selectively excited isotopologues can be manipulated by the sequence of laser pulses. For optimal control of excitation laser pulses should be specifically shaped. Moreover, their periodicity also plays essential role. Supersonic overcooled gas flow is the best to use as a quantum Turing machine, because molecular spectra are well resolved and, therefore, better control over them by laser field can be implemented. Decoherence level in ensemble of molecules and clusters, representing gas flow, can be controlled by its rarefaction degree and extension. Evolution of quantum states population is guided by the battery of femtosecond lasers installed along the gas flow direction. Each laser emits laser pulse of predesigned shape, which is related to some command written for the quantum computer (unitary transformation). The quantum state in the end of gas flow is the result of calculation. If gas flow transition time is not long enough to complete all sequence of required commands, received final state (intermediate solution) is recorded and translated into laser pulse shape, assigned for initialization. Otherwise, initialization laser pulse is step-like with intensity just high enough to excite all isotopologues to the same quantum state. Final quantum state of the gas flow is read by the classical computer by finalizing measurement, which is implemented as following: Once irradiated gas flow feeds spectrometer, where electrons, corresponding to resulting quantum state, are ejected by applied ionizing laser pulse. Obtained electron energy spectra, bearing information of original optical spectrum, are recorded by the network of surrounding electrodes, and then amplified. By analog-digital convertor electrical currents induced on electrodes are transformed into digital format for further processing on the classical computer.

Biography

Konstantin Lyakhov has completed his PhD in Theoretical Physics in J W Goethe University in 2008. Since 2008, he has been an Oil Reservoir Engineer in Petroleum Technologies. In early 2010, he became a researcher in Institute of Biochemical Physics of Russian Academy of Science. In late 2010, he joined the Plasma Applications Laboratory, Nuclear and Energy Engineering Department of Jeju National University, as a researcher, and from 2012 as a Research Professor. He has published 12 papers in SCI journals (in 10 of them as a first author, total number of co-authors is no more than 2).

E-mail: lyakhov2000@yahoo.com