Asymmetric Mach-Zehnder germano-silicate channel waveguide interferometers for quantum cryptography systems

Bonfrate, G.; Harlow, M.J.; Ford, C.W.; Maxwell, G.; Townsend, Paul D.

doi:10.1049/el:20010508

Cited by 14 publications

(8 citation statements)

References 1 publication

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“…An alternative approach to the aforementioned problems based on a one-way interferometer using integrated-optic AMZIs [26][27][28][29] was recently reported. By applying a planar lightwave circuit (PLC), the instability due to the phase drift inherent in a one-way QKD system and the polarization drift in the link fiber were eliminated without introducing 4 any complex active compensation mechanisms.…”

Section: Michelson Interferometer and Faraday Mirrors To Develop An Imentioning

confidence: 99%

One-Way Quantum Key Distribution System Based on Planar Lightwave Circuits

Nambu

Yoshino

Tomita³

2006

jjap

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We developed a one-way quantum key distribution (QKD) system based upon a planar lightwave circuit (PLC) interferometer. This interferometer is expected to be free from the backscattering inherent in commercially available two-way QKD systems and phase drift without active compensation. A key distribution experiment with spools of standard telecom fiber showed that the bit error rate was as low as 6% for a 100-km key distribution using an attenuated laser pulse with a mean photon number of 0.1 and was determined solely by the detector noise. This clearly demonstrates the advantages of our PLC-based one-way QKD system over two-way QKD systems for long distance key distribution.

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Section: Michelson Interferometer and Faraday Mirrors To Develop An Imentioning

confidence: 99%

One-Way Quantum Key Distribution System Based on Planar Lightwave Circuits

Nambu

Yoshino

Tomita³

2006

jjap

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“…In this letter, we propose a unidirectional system using integrated-optic interferometers based on the planar lightwave circuit (PLC) technology as a solution to this conflict between stability and transmission distance [12]. We have demonstrated single-photon interference with sufficiently high visibility for constructing a practical QKD system up to 150 km.…”

mentioning

confidence: 99%

Single-photon Interference over 150 km Transmission Using Silica-based Integrated-optic Interferometers for Quantum Cryptography

Kimura

Nambu

Hatanaka

et al. 2004

Jpn. J. Appl. Phys.

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“…Two components were joined to form a single time-division interferometer for optical pulses. The composite interferometer displayed a high fringe contrast ratio of 1:200 production that is eminently appropriate for use in compact, low-error-rate quantum cryptography systems [7]. It provides the academic and the applied communities a compendium and a research resource with significant insights and inspiration for innovative scientific education, investigation, and collaboration, overcoming "hard problems" among the emerging challenges today and in the future [8].…”

Section: Mathematics Subject Classification 94-xx 1 Introductionmentioning

confidence: 99%

SMS Encryption and Decryption Using Modified Vigenere Cipher Algorithm

Ahamed

Krishnamoorthy

2020

J. Oper. Res. Soc. China

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Despite many online messaging services, short message service (SMS) is still used because of its simplicity. However, such services can be easily cracked, making SMS more vulnerable to send confidential information. Therefore, appropriate cryptographic algorithms must be applied to ensure security. One of the most common cryptographic techniques used for encrypting and decrypting messages is the Vigenere cipher. However, Vigenere cipher can be cracked easily because the previous approach involved 26 × 10 matrixes, and the key comprised of alphabets. If the key length is small, then it becomes easier to crack the plain text by permutation. So here in this work, we have proposed a modified Vigenere cipher technique to enhance its security standards. Existing Vigenere cipher attack is not more secured, and thus we developed a method that improves the security in Vigenere cipher using Rivest-Shamir-Adleman (RSA). RSA is an asymmetric algorithm that has public and private keys. The advantage of using this algorithm is that finding factors for the large composite numbers is difficult. This method is secured but time consuming. In this proposed method, we combined RSA with Vigenere cipher so that the proposed algorithm is secured and consumes less time than RSA algorithm. This approach is widely used to encrypt SMS.

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Asymmetric Mach-Zehnder germano-silicate channel waveguide interferometers for quantum cryptography systems

Cited by 14 publications

References 1 publication

One-Way Quantum Key Distribution System Based on Planar Lightwave Circuits

One-Way Quantum Key Distribution System Based on Planar Lightwave Circuits

Single-photon Interference over 150 km Transmission Using Silica-based Integrated-optic Interferometers for Quantum Cryptography

SMS Encryption and Decryption Using Modified Vigenere Cipher Algorithm

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