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BIBO stability of continuous and discrete -time systems01:24

BIBO stability of continuous and discrete -time systems

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To determine the BIBO stability, the convolution integral is utilized when a bounded continuous-time input is applied to a Linear Time-Invariant (LTI) system.
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An experiment often consists of more than a single step. In this case, measurements at each step give rise to uncertainty. Because the measurements occur in successive steps, the uncertainty in one step necessarily contributes to that in the subsequent step. As we perform statistical analysis on these types of experiments, we must learn to account for the propagation of uncertainty from one step to the next. The propagation of uncertainty depends on the type of arithmetic operation performed on...
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Related Experiment Video

Updated: May 15, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Experimental implementation of bit commitment in the noisy-storage model.

Nelly Huei Ying Ng1, Siddarth K Joshi, Chia Chen Ming

  • 1School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore.

Nature Communications
|December 29, 2012
PubMed
Summary
This summary is machine-generated.

We developed a secure bit commitment protocol using quantum cryptography, secure against attackers with imperfect quantum memory. This demonstrates the feasibility of quantum two-party protocols with real-world devices.

Related Experiment Videos

Last Updated: May 15, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Area of Science:

  • Quantum Cryptography
  • Information Security

Background:

  • Fundamental cryptographic primitives like bit commitment are essential for secure two-party protocols.
  • Secure implementation of these primitives is crucial in modern cryptography.

Purpose of the Study:

  • To present a novel bit commitment protocol secure under the noisy-storage model.
  • To experimentally demonstrate the feasibility of such protocols using quantum devices.

Main Methods:

  • Developed a bit commitment protocol secure against imperfect quantum memory.
  • Experimentally implemented the protocol using polarization-entangled photon pairs.
  • Conducted a comprehensive security analysis including experimental error rates and finite size effects.

Main Results:

  • The bit commitment protocol is secure as long as the attacker's quantum memory is imperfect (noisy-storage model).
  • Successful experimental execution using entangled photons confirmed protocol feasibility.
  • Security analysis accounted for all experimental imperfections and finite size effects.

Conclusions:

  • The study demonstrates the practical feasibility of two-party quantum cryptographic protocols in the noisy-storage model.
  • Real-world quantum devices can be used to implement secure cryptographic primitives.
  • The presented protocol offers a viable solution for secure bit commitment in quantum networks.