Implementation of all-optical Toffoli gate in Λ-systems

Gazazyan, E. A.; Grigoryan, G. G.; Chaltykyan, V. O.; Schraft, Daniel

doi:10.3103/s1068337212050040

Cited by 8 publications

(2 citation statements)

References 33 publications

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“…The Toffoli gate is one of the most important universal reversible logic gates [23][24][25][26][27]. The reversibility of the Toffoli gate has been implemented in various ways [28][29][30][31]. A method of integrating the key quantum circuits with existing technology platforms to harness any multi-level information is demonstrated [32].…”

Section: Introductionmentioning

confidence: 99%

Implementation of all‐optical Toffoli gate by 2D Si–air photonic crystal

Ranwa

Mukhopadhyay

2021

IET Optoelectronics

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The quantum Toffoli gate is one of the essential reversible universal logic gates widely used for optical data processing. Herein, a new scheme of developing all-optical Toffoli gate using a two-dimensional silicon-air photonic crystal is proposed. For the realization of the Toffoli gate, the principles of constructive and destructive interference of light are used. The Toffoli gate comprises two-input-three-output-based optical AND gate, and a two-input-one-output optical XOR gate. Two Y junction power splitters have been used at the two inputs of the AND gate. The operating wavelength of the proposed Toffoli gate is 1550 nm along with the wafer size of 50 µm � 50 µm. The performance of the Toffoli gate has been analysed and simulated by the plane-wave expansion method and finite-difference time-domain method. The response time and contrast ratios are also obtained from the simulation. The proposed Toffoli gate is intensity encoded with no non-linear material within the crystal which shows significant improvement over other proposals.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Implementation of all‐optical Toffoli gate by 2D Si–air photonic crystal

Ranwa

Mukhopadhyay

2021

IET Optoelectronics

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“…Nonlinear system of Maxwell equations for the field and Schrödinger equation for atoms are solved in adiabatic approximation. Work [23] considers realization of the Toffoli logic element in Λ-media. Simple realization of Toffoli gate in crystalline films doped with rare-earth atoms was proposed.…”

Section: Introductionmentioning

confidence: 99%

Nonstationary theory of polarized light pulse propagation through a four-level resonant medium with allowance for nonlinear complex refractive index of medium

Adonts¹,

Arzakantsyan

2013

J. Contemp. Phys.

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Abstract⎯ Nonstationary theory of polarized light pulse propagation through the medium with resonant transition 1/2 -1/2 is developed with taking into account complexity of the medium nonlinear refractive index. The theory is developed based on the irreducible tensor formalism which allows diagonalizing relaxations matrix and introducing effective decay times associated with the population relaxation, as well as relaxation of coherence between magnetic sublevels of the resonant system. It is shown that as a result of interference of magnetic sublevels in the polarized radiation field the inversionless amplification of radiation occurs due to optical pumping process. The dependence of inversionless amplification on the line broadening and resonance detuning is studied.

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