Information Security - MITSUBISHI ELECTRIC

Quantum encryption utilizes the behavior of weak light to act as a single photon and is premised on the indeterminacy principle

. Used as a medium for communicating information, quantum encryption is an absolutely safe cryptographic technology against eavesdropping.

	Quantum encryption experiment and system development (single photon generation and detection, physical random number generation, quantum key distribution system, etc.)
	Safe and highly efficient data processing technology (error revision function, privacy width expansion function, etc.)
	Theoretic research (safety analysis, new quantum protocol, etc.)

	Conducted Japan’s first quantum encryption communication system experiment, in September 2000 (News release: 2000-09-14.)
	Conducted the world’s longest-distance (87 km) quantum encryption communication system experiment, in November 2002 (News release: 2002-11-14.)
	Developed an integrated quantum encryption system merged with existing security (News release: 2002-11-14.)

1,550 nm single-photon detector
	World’s highest-level function (high efficiency with low noise level of 10)

Quantum encryption system
	Key sharing function
	Eavesdropping detection function
	Error revision and strengthened concealment processing

Comprehensive quantum encryption system
	Combines high speed and safety (one time pad, modern encryption)

	Introduction of research results related to quantum encryption, such as system experiments, proposals of new methods, safety analysis, and new data processing
	IPA surveillance studies of the research activity of quantum computers and of quantum encryption.
	Ministry of Public Management, Home Affairs, Posts and Telecommunications/TAO contract on the research and development of quantum cryptographic technology.

1.	The indeterminacy principle refers to a fundamental principle in physics that maintains that the state of anything viewed in the micro world will receive an effect from that viewing.
2.	As of November 2002.