Publications by authors named "Mujtaba Zahidy"
Quantum key distribution (QKD) is a secure communication scheme for sharing symmetric cryptographic keys based on the laws of quantum physics, and is considered a key player in the realm of cyber-security. A critical challenge for QKD systems comes from the fact that the ever-increasing rates at which digital data are transmitted require more and more performing sources of quantum keys, primarily in terms of secret key generation rate. High-dimensional QKD based on path encoding has been proposed as a candidate approach to address this challenge.
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- Light carrying orbital angular momentum (OAM) is crucial for improving classical and quantum information technologies by increasing data capacity and enhancing secret key rates.
- Despite its potential, practical use is hindered by the challenges in creating integrated photonic devices that can effectively generate and manipulate OAM.
- This study introduces a photonic integrated chip that can excite OAM modes in a ring-core fiber, enabling simultaneous parallel quantum key distribution, marking progress towards more compact and efficient quantum communication devices.
Article Synopsis
- Field trials are crucial for testing new technologies, like quantum key distribution (QKD), which ensures secure communication between distant parties.
- The authors conducted a trial in Padua, Italy, using low-complexity self-stabilized hardware and a new synchronization method to effectively implement QKD over existing optical fiber networks.
- Their findings show that this resource-efficient system is robust and can be easily integrated into current telecommunications, marking progress toward more accessible and cost-effective QKD solutions.