LG Electronics development takes quantum communication to a whole new level.
In a recent study published on January 9 in the journal Nature, LG specialists proposed a new protocol for quantum communication, which will significantly increase the data transfer rate and increase security.
Previously, the speed of quantum communication was strongly limited by the "dead time" of single-photon detectors used in this field. Even the most advanced detectors, such as the superconducting nanowire single-photon detector, still impose limits on the speed of data transmission with direct quantum communication.
The new Quantum Secure Direct Communication (QSDC) protocol uses two optical degrees of freedom to encode information — the time and phase states of quantum particles. The phase state is used to estimate the quantum bit error and determine whether an attacker is present in the communication channel, while the time state is used for both error estimation and message transmission.
Unlike previous protocols that used only one quantum state, the new approach allows you to transfer multiple bits of information in a single quantum state. This is achieved through new coding methods based on differential time interval delays.
According to the lead author of the study, Ben Ku Ahn, the new protocol does not require the use of quantum memory, a two-way data transmission structure, and constant checking for intruders in the channel. It was these shortcomings of the previous DL04 protocol that reduced the efficiency of data transmission.
According to Ahn, the new study not only suggests a new protocol, but also verifies it in action through security analysis and modeling. The results obtained indicate a significant improvement in both data transfer speed and security compared to the existing protocol. This makes this development a promising breakthrough in the field of quantum communications.
In a recent study published on January 9 in the journal Nature, LG specialists proposed a new protocol for quantum communication, which will significantly increase the data transfer rate and increase security.
Previously, the speed of quantum communication was strongly limited by the "dead time" of single-photon detectors used in this field. Even the most advanced detectors, such as the superconducting nanowire single-photon detector, still impose limits on the speed of data transmission with direct quantum communication.
The new Quantum Secure Direct Communication (QSDC) protocol uses two optical degrees of freedom to encode information — the time and phase states of quantum particles. The phase state is used to estimate the quantum bit error and determine whether an attacker is present in the communication channel, while the time state is used for both error estimation and message transmission.
Unlike previous protocols that used only one quantum state, the new approach allows you to transfer multiple bits of information in a single quantum state. This is achieved through new coding methods based on differential time interval delays.
According to the lead author of the study, Ben Ku Ahn, the new protocol does not require the use of quantum memory, a two-way data transmission structure, and constant checking for intruders in the channel. It was these shortcomings of the previous DL04 protocol that reduced the efficiency of data transmission.
According to Ahn, the new study not only suggests a new protocol, but also verifies it in action through security analysis and modeling. The results obtained indicate a significant improvement in both data transfer speed and security compared to the existing protocol. This makes this development a promising breakthrough in the field of quantum communications.
