Breakthrough Volume Holographic Data Storage Technology

Enhancing Anodization of Semiconductor Materials Technology with Wafer Bonding Transforming Interface Function

Source of Biphoton Quantum Light

Laser Diode Power Supply

Trace

Technical Name	Semiconductor Laser Quantum Key DistributionCommunication Transceiver
Project Operator	National Taiwan University
Project Host	吳育任
Summary	To implement the semiconductor-laser-based single-photon QKD for OQC in DWDM-PON, novel technologies including self-feedback DI, master-to-slave F/PLL, random DPSK protocol synthesixeralgorithm, silicon photonic single-photon QKD system-on-chip, high-Q-factor micro-ring notch filter, etc. will be established for realizing 2-D/3-D QKD/OQC architecture in 25-100km short-/long-reach metropolitanbackbone SMF DWDM-PON applications beyond 10 Gbit/s.
Scientific Breakthrough	The DFBLD- DPSK-QKD-OQC technology employs the narrow-linewidth ultralow-drift DFBLD single-photon QKD carrier with master-slave injection lockingmutual frequency/phase locking control, combining with self-feedback 1-bit-delay interferometer with high-Q micro-RingFano notch filter,receiving by the pulsed-gating low-dark-current SPAD for realizing 25-100 km short/long distance SMF-based 2-D/3-D QKD-OQC DWDM-PON at 10Gbit/s transmission1Mbits receiving.
Industrial Applicability	"DFBLD-based DPSK-QKD-OQC protocol distributortransceiver for DWDM-PON" demonstrated with novel key components such as injection-locked DPSK carrier, software-controlled/self-feedback DI, pulsed-gated SPAD, Si-Ph QKD system-on-chip,QKD protocol simulator/analyzer, has opened a new industrial era with urgent need on strengthening quantum encryptiondecryption capabilities for applications in e-commerce financial payment, government defensemedical information streaming.
Keyword	Quantum Key Distribution (QKD) Coherent Single-Photon Quantum Source Silicon Photonic Transceiver System on Chip Single-Mode Narrow-Linewidth Semiconductor Laser 1-Bit-Delay Fiber Interferometer (1-Bit DI) Randomized DPSK QKD Protocol Encoder SiGe Single-Photon Avalanche Photodetector (SPAD) Pulsed Bit-Stream Gating and Delay Circuitry QKD Protocol Encoding/Decoding Program Single-Photon QKD DWDM Communication Network