第四届量子计算与量子通信国际研讨会(SQCC_D 2021)将于2021年12月24-26日在三亚召开。本次会议旨在为业内专家学者分享技术进步和业务经验，聚焦量子计算与量子通信的前沿研究，提供一个交流的平台。  大会议题包含但不限于：

Carbon nanotubes and graphene

Cavity polaritons
Entanglement and error-correction
Entanglement and non-locality
Entanglement swapping, relays and quantum repeaters
Fault tolerant quantum error correction
Fiber based systems
Free space systems
Fundamentals of Quantum Theory
Integrated quantum photonics
Multimode entanglement
Multi-party quantum communication
New applications and protocols
Nondeterministic communication complexity
Open quantum systems and entanglement
Photonic quantum systems
Quantum algorithms and complexity
Quantum bits, gates and registers
Quantum circuits
Quantum communication
Quantum computing
Quantum continuous variables
Quantum cryptography
Quantum dots
Quantum fourier transform and applicationsPhysical realizations
Quantum hall systems
Quantum information processing devices and systems
Quantum Information Theory
Quantum interfaces and memory
Quantum interferometry
Quantum key distribution
Quantum memories
Quantum nonlinear optics
Quantum optics and quantum photonics
Quantum silicon photonics
Quantum teleportation
Quantum well cavity-polaritons
Science motivations and technology priorities
Secure communication based on quantum key distribution