Radiation Emitter and Method of Fabricating a Radiation Emitter

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This invention relates to a sophisticated radiation emitter capable of generating individual photons or pairs of entangled photons. The emitter features a novel design where the excitation (pump) section is structured as a ring surrounding the photon emitter section. The ring shape, combined with internal reflection 'whispering gallery modes' and precise layer and structure arrangements (such as Bragg resonators and mirrors), enables efficient and tunable excitation of the emitter to produce the desired photon output. The patent also covers methods for fabricating such structures, including integration of electrical, thermal, and mechanical tuning features.

Use CasesContent extracted from patent full text and abstract with AI.

• Quantum communication systems requiring single or entangled photon sources.
• Quantum key distribution (QKD) networks for secure data transmission.
• Integrated quantum photonic circuits for quantum computing applications.
• High-precision quantum sensing and metrology.
• Photon-based quantum random number generators.
• Development of advanced single-photon detectors and laser calibration sources.
• Quantum cryptography hardware modules.

BenefitsContent extracted from patent full text and abstract with AI.

• Highly efficient generation of single or entangled photons with controlled wavelength and output direction.
• Compact integration suitable for photonic and electronic device manufacturing.
• Tunable emission by adapting the pump wavelength using mechanical or thermal control, improving operational flexibility.
• Enhanced photon output coupling, including direct fiber integration, thanks to resonator structures and internal mirrors.
• Potential for monolithic integration with existing semiconductor and photonic manufacturing processes.
• Improved purity and indistinguishability of emitted photons due to precise wavelength adaptation and internal design features.

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Patent Abstract

The invention inter alia relates to radiation emitter (100) comprising an emitter section (120) and an optical pump section (110) that is capable of generating pump radiation (Rp) in order to excite the emitter section (120) to emit single photons (P) or entangled photon pairs. The optical pump section (110) is ring-shaped and the emitter section (120) is located inside the ring-shaped pump section (110).