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Quantum Physics, Optics and
Laser Technologies
Page 33
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conferenceseries.com
Volume 5 Journal of Lasers, Optics & Photonics Physicists Congress 2018
May 09-10, 2018
May 09-10, 2018 Tokyo, Japan
International Conference on
Overcooled gas flow assisted quantum computing
Konstantin A Lyakhov1, Alexander N Pechen2 and Heon-Ju Lee1
1Jeju National University, Republic of Korea
2Steklov’s Mathematical Institute, Russia
In this talk, the author will discuss 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 level, laser pulses should be specifically shaped. Moreover, their
periodicity also plays essential role. Supersonic overcooled gas flow is the best tool for implementation of quantum turing
machine, because molecular spectra are well resolved and, therefore, better control over them by laser field can be realized.
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 is 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. In order, to diminish unavoidable errors induced by quantum
noise, this procedure should be reiterated a number of times, corresponding to desired accuracy level. Design of a new device
implementing quantum computations based on overcooled gas flow selective excitation is proposed.
Recent Publications
1. Lyakhov K A, Lee H J (2015) Optimal design of experimental setup for boron isotopes separation by the Laser Assisted
Retardation of Condensation Method. Journal of Nanoscience and Nanotechnology; 15(11): 8502-8507(6).
2. Lyakhov K A, Lee H J (2015) Some Features of Experimental Setup Design for Isotopes Separation by the Laser Assisted
Retardation of Condensation Method. Journal of Laser Applications; 27: 022008.
Biography
Konstantin A Lyakhov has received his PhD in Theoretical Physics in J.W. Goethe University (Frankfurt) in 2008. His research was focused on polymers and fuel
cells simulations. His research interests include laser applications, isotopes separation, quantum computing, images recognition, optimal control, vacuum science
and technology and applied plasma physics.
Konstantin A Lyakhov et al., J Laser Opt Photonics 2018, Volume 5
DOI: 10.4172/2469-410X-C1-020