Apparatus and methods for quantum key distribution

This invention describes a system for securely exchanging cryptographic keys using light particles on tiny integrated chips. It uses two identical sender chips and one receiver chip. The sender chips encode information by sending light pulses in specific time slots, using ring-shaped light guides and tiny heaters to control the light's properties. The receiver chip then measures these light pulses to establish the secure key. The claims specifically detail how the sender chip uses ring resonators to create and manipulate these light pulses.

Why it matters: Filed when integrated photonic quantum circuits were nascent. Advances in silicon photonics fabrication and on-chip quantum control over the last decade make high-speed, integrated quantum key distribution more feasible and efficient to implement.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedIntegrated photonic chip, quantum optics, high-speed modulation

3 AI reinvention directions for this patent

See all three

AI gives you a few directions you could take this. Pick one, and we check whether your version is different enough to patent, then write the filing.

Reinvent this with AI

Where this one came from

Every morning we go through millions of abandoned patents and pick out 15 worth your time. This was one of today’s.

This one

+10