Modulator‐Free Coherent‐One‐Way Quantum Key Distribution
Time‐bin encoding is an attractive method for transmitting photonic qubits over long distances with minimal decoherence. It allows a simple receiver for quantum key distribution (QKD) that extracts a key by measuring time of arrival of photons and detects eavesdropping by measuring interference of pulses in different time bins. In the past, coherent pulses have been generated using a CW laser and an intensity modulator. A greatly simplified transmitter is proposed and demonstrated here that works by directly modulating the laser diode. Coherence between pulses is maintained by a weak seed laser. The modulator‐free source creates time‐bin encoded pulses with a high extinction ratio (29.4 dB) and an interference visibility above 97 %. The resulting QKD transmitter gives estimated secure key rates up to 4.57 Mbit/s, the highest yet reported for coherent‐one‐way QKD, and can be programmed for all protocols using weak coherent pulses.
- Location
-
Deutsche Nationalbibliothek Frankfurt am Main
- Extent
-
Online-Ressource
- Language
-
Englisch
- Bibliographic citation
-
Modulator‐Free Coherent‐One‐Way Quantum Key Distribution ; volume:11 ; number:4 ; year:2017 ; extent:4
Laser & photonics reviews ; 11, Heft 4 (2017) (gesamt 4)
- Creator
-
Roberts, G. L.
Lucamarini, M.
Dynes, J. F.
Savory, S. J.
Yuan, Z. L.
Shields, A. J.
- DOI
-
10.1002/lpor.201700067
- URN
-
urn:nbn:de:101:1-2022092705435864549320
- Rights
-
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
-
15.08.2025, 7:33 AM CEST
Data provider
This object is provided by:
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Roberts, G. L.
- Lucamarini, M.
- Dynes, J. F.
- Savory, S. J.
- Yuan, Z. L.
- Shields, A. J.
Other Objects (12)
A modulator-free quantum key distribution transmitter chip
Quantum key distribution with two-way authentication
Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks
Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks
One-way information reconciliation schemes of quantum key distribution
Coherent state quantum key distribution with multi letter phase-shift keying
Feasibility of free space quantum key distribution with coherent polarization states
A simulator of optical coherent-state evolution in quantum key distribution systems
Relativistic quantum key distribution system with one-way quantum communication
System Approaches for a Practical Implementation of Continuous-Variable Quantum Key Distribution Using Coherent Heterodyne Detection
Erratum: Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security Against Coherent Attacks [Phys. Rev. Lett. 109, 100502 (2012)]
NAD+ metabolism is a key modulator of bacterial respiratory epithelial infections
A modulator-free quantum key distribution transmitter chip
Quantum key distribution with two-way authentication
Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks
Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks
One-way information reconciliation schemes of quantum key distribution
Coherent state quantum key distribution with multi letter phase-shift keying
Feasibility of free space quantum key distribution with coherent polarization states
A simulator of optical coherent-state evolution in quantum key distribution systems
Relativistic quantum key distribution system with one-way quantum communication
System Approaches for a Practical Implementation of Continuous-Variable Quantum Key Distribution Using Coherent Heterodyne Detection
Erratum: Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security Against Coherent Attacks [Phys. Rev. Lett. 109, 100502 (2012)]
NAD+ metabolism is a key modulator of bacterial respiratory epithelial infections
A modulator-free quantum key distribution transmitter chip
Quantum key distribution with two-way authentication
Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks
Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security against Coherent Attacks
One-way information reconciliation schemes of quantum key distribution
Coherent state quantum key distribution with multi letter phase-shift keying
Feasibility of free space quantum key distribution with coherent polarization states
A simulator of optical coherent-state evolution in quantum key distribution systems
Relativistic quantum key distribution system with one-way quantum communication
System Approaches for a Practical Implementation of Continuous-Variable Quantum Key Distribution Using Coherent Heterodyne Detection
Erratum: Continuous Variable Quantum Key Distribution: Finite-Key Analysis of Composable Security Against Coherent Attacks [Phys. Rev. Lett. 109, 100502 (2012)]