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Improvement of reliability in multi-interferometer-based counterfactual deterministic communication with dissipation
Optics Express
|February 7, 2018
Summary
Direct counterfactual quantum communication (DCQC) shows promise but faces reliability issues in practical setups. Dissipation compensation can improve the dependability of this quantum information transfer method.
Area of Science:
- Quantum Information Science
- Quantum Communication
- Experimental Physics
Background:
- Direct counterfactual quantum communication (DCQC) enables information transfer without physical carriers.
- Nested interferometers are theoretical platforms for realizing infinite DCQC.
Purpose of the Study:
- To analyze the reliability of DCQC in practical interferometers considering inevitable losses.
- To investigate the impact of the number of interferometers on communication reliability.
- To demonstrate methods for improving DCQC reliability in finite systems.
Main Methods:
- Analysis of reliability dependence on the number of interferometers.
- Simulation and testing of a counterfactual deterministic communication protocol.
- Implementation of dissipation compensation techniques in interferometers.
Main Results:
- Communication reliability rapidly degrades with an increasing number of interferometers due to losses.
- Simulations confirm the degradation of DCQC reliability in finite experimental setups.
- Dissipation compensation significantly improves the reliability of DCQC with a finite number of interferometers.
Conclusions:
- Practical implementation of DCQC using nested interferometers is challenged by signal degradation.
- The number of interferometers critically affects communication reliability.
- Dissipation compensation is a viable strategy to enhance the dependability of experimental DCQC.
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