Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

IEEE EUROCON - International Conference on Computer as a Tool (EUROCON)

Fiber interferometric communications using mach-zehnder interferometer topology

Jurij Tratnik, Boštjan Batagelj

Published May 1, 2009• 4 citations
Publisher

Abstract

A simple concept of fiber optic communication topology using Mach-Zehnder interferometer is presented. This kind of communication can be used for secure encryption-key distribution or secure point-to-point full-duplex data-transfer communication. In both interferometric-communication applications standard optical components and single-mode fibers are used. Maximum fiber length is dependent on system noise, which must not exceed the interference pattern.

DOI
10.1109/eurcon.2009.5167877

Related papers

Secure Optical Communication System Based on ASE Noise with No Need for Key Distribution

Quan Yu, Zexi Zhao, Lei Deng +5 more

We propose and experimentally demonstrate a stable secure optical communication system with no need for secure key distribution. In this scheme, the amplified spontaneous emission (ASE) noise is used as the optical carrier to hide the signal both in time and frequency domain. The coherence length of the ASE noise is pretty short so that it is extremely difficult for an eavesdropper to intercept the signal. Only one Mach-Zehnder interferometer exists in the receiver, and there is no need for the receiver to match the optical delay. By this way, the optical delay and the polarization fluctuation caused by the environment can be automatically counteracted in the returning path. Therefore, no key distribution is required, and the optical delay value can be changed dynamically as a secret key in the receiver. In our experiment, 1Gb/s encrypted on-off keying signal is securely transmitted over 25km standard single mode fiber and dispersion compensation fiber.

IEEE International Conference on Advanced Infocomm Technology•Aug 1, 2018•2 citations

Accelerated secure key distribution based on localized and asymmetric fiber interferometers

Chaoran Huang, Philip Y. Ma, Eric C. Blow +2 more

We propose and experimentally demonstrate an approach to generate and distribute secret keys over optical fiber communication infrastructure. Mach-Zehnder interferometers (MZIs) are adopted for key generation by transferring the environmental noise to random optical signals. A novel combination of wideband optical noise and an asymmetric MZI structure enables the secret keys to be securely transmitted and exchanged over public fiber links without being detected. We experimentally demonstrate this system and show reliable performance: keys are generated at the rate of 502 bit/s, and are successfully exchanged between two parties over a 10 km optical fiber with a bit error of ∼ 0.3%. System security analysis is performed by corroborating our experimental findings with simulations. The results show that our system can protect the key distribution under different attacks, attributed to wideband optical noise and asymmetric MZI structures. Compared to the previous schemes based on distributed MZIs, our scheme exploits localized MZI which provides twofold advantages. Firstly, the key generation rate can be increased by a factor of 5.7 at a negligible additional cost. Secondly, the system becomes robust to, in particular, active intrusion attack. The proposed system is a reliable and cost-effective solution for key establishment, and is compatible with the existing optical fiber communication infrastructure.

Optics Express•Oct 21, 2019•32 citations

A few-mode fiber Mach-Zehnder interferometer for quantum communication applications

Alvaro Alarcón, GUILHERME BARRETO XAVIER

We show that telecom few-mode fiber Mach-Zehnder interferometers can be used for quantum communication protocols where the LP01 and LP11 a modes are employed to encode spatial qubits.

Frontiers in Optics•Jan 1, 2020•2 citations

All-fiber three-path Mach–Zehnder interferometer

Gregor Weihs, Michael Reck, Harald Weinfurter +1 more

We report the realization of a three-path Mach-Zehnder interferometer using single-mode fibers and two integrated 3 x 3 fiber couplers. We observed enhanced phase sensitivity, as compared with two-path interferometers, with a visibility of the interference pattern of more than 97%. This interferometer has an analog in two-photon interferometry, and we believe it to be the first nontrivial example of N x N multiport interferometers.

Optics Letters•Feb 15, 1996•87 citations

Plug and Play configuration using two modulator on single Mach-Zehnder Interferometer

Norshamsuri Ali, Hafizulfika, Salim Ali Al-Kathiri +1 more

We experimentally demonstrates a two way quantum key distribution (QKD) system with a single Mach Zehnder interferometer over 10 km standard grade optical fiber. The scheme utilizes optical phase encoding/decoding with polarization of photon maintained through the use of polarization maintaining optical fiber at the transmitting and receiving ends and achieves a visibility of 99%.

National Conference on Telecommunication Technologies and Malaysia Conference on Photonics (NCTT-MCP)•Aug 1, 2008•0 citations

Quantum-secured communications overlay for optical fiber communications networks

J. E. Nordholt

Quantum secure communication systems communicate quantum signals for quantum key distribution and classical signals with encrypted data and commands via a single optical fiber. In some systems, the single fiber carries classical data in both directions along with quantum communications. For example, quantum keys can be used to encrypt packets for bidirectional communication between two parties. In other systems, a single fiber is used for one way classical communications and quantum communications. The communication systems are secured using a security parameter based on the quantum and classical communications across the optical fiber.

•Jan 23, 2023•0 citations
A simple concept of fiber optic communication topology using Mach-Zehnder interferometer is presented. This kind of communication can be used for secure encryption-key distribution or secure point-to-point full-duplex data-transfer communication. In both interferometric-communication applications standard optical components and single-mode fibers are used. Maximum fiber length is dependent on system noise, which must not exceed the interference pattern.
We propose and experimentally demonstrate a stable secure optical communication system with no need for secure key distribution. In this scheme, the amplified spontaneous emission (ASE) noise is used as the optical carrier to hide the signal both in time and frequency domain. The coherence length of the ASE noise is pretty short so that it is extremely difficult for an eavesdropper to intercept the signal. Only one Mach-Zehnder interferometer exists in the receiver, and there is no need for the receiver to match the optical delay. By this way, the optical delay and the polarization fluctuation caused by the environment can be automatically counteracted in the returning path. Therefore, no key distribution is required, and the optical delay value can be changed dynamically as a secret key in the receiver. In our experiment, 1Gb/s encrypted on-off keying signal is securely transmitted over 25km standard single mode fiber and dispersion compensation fiber.
We propose and experimentally demonstrate an approach to generate and distribute secret keys over optical fiber communication infrastructure. Mach-Zehnder interferometers (MZIs) are adopted for key generation by transferring the environmental noise to random optical signals. A novel combination of wideband optical noise and an asymmetric MZI structure enables the secret keys to be securely transmitted and exchanged over public fiber links without being detected. We experimentally demonstrate this system and show reliable performance: keys are generated at the rate of 502 bit/s, and are successfully exchanged between two parties over a 10 km optical fiber with a bit error of ∼ 0.3%. System security analysis is performed by corroborating our experimental findings with simulations. The results show that our system can protect the key distribution under different attacks, attributed to wideband optical noise and asymmetric MZI structures. Compared to the previous schemes based on distributed MZIs, our scheme exploits localized MZI which provides twofold advantages. Firstly, the key generation rate can be increased by a factor of 5.7 at a negligible additional cost. Secondly, the system becomes robust to, in particular, active intrusion attack. The proposed system is a reliable and cost-effective solution for key establishment, and is compatible with the existing optical fiber communication infrastructure.
Quantum secure communication systems communicate quantum signals for quantum key distribution and classical signals with encrypted data and commands via a single optical fiber. In some systems, the single fiber carries classical data in both directions along with quantum communications. For example, quantum keys can be used to encrypt packets for bidirectional communication between two parties. In other systems, a single fiber is used for one way classical communications and quantum communications. The communication systems are secured using a security parameter based on the quantum and classical communications across the optical fiber.