16 citations · 41 across the 6 of their papers we have counts for
6 papers
Randomized ancillary qubit overcomes detector-control and intercept-resend hacking of quantum key distribution
Salem F. Hegazy, Salah S. A. Obayya, Bahaa E. A. Saleh
Practical implementations of quantum key distribution (QKD) have been shown to be subject to various detector side-channel attacks that compromise the promised unconditional securi…
Extended Source of Indistinguishable Polarization-entangled Photons over Wide Angles of Emission
Salem F. Hegazy, Salah S. A. Obayya
The generation of high-fidelity polarization-entangled photon pairs, to date, has been demonstrated on specific spatial modes or over relatively narrow apertures. We put forward an…
Optimal Ultra-wide Spatial-Spectral Windows for Hyperentangled Two-photon Emission
S. F. Hegazy, J. El-Azab, Y. A. Badr +1
While being optimally compensated for spatial phase variations, the two-photon state produced by the two-crystal emission exhibits spatial and spectral decoherence off the central…
A new technique for ultra-fast physical random number generation using optical chaos
Amr Elsonbaty, Salem F. Hegazy, Salah S. A. Obayyaa
In this paper, we numerically demonstrate a new extraction scheme for generating ultra-fast physically random sequence of bits. For this purpose, we utilize a dual-channel optical…
Accurate relative-phase and time-delay maps all over the emission cone of hyperentangled photon source
Salem F. Hegazy, Jala El-Azab, Yehia A. Badr +1
High flux of hyperentangled photons entails collecting the two-photon emission over relatively wide extent in frequency and transverse space within which the photon pairs are simul…
Encoding M classical bits in the arrival time of dense-coded photons
Salem F. Hegazy, Ahmed E. Morra, Salah S. A. Obayya
We present a scheme to encode M extra classical bits to a dense-coded pair of photons. By tuning the delay of an entangled pair of photons to one of 2^M time-bins and then applying…