Quantum Communication & Cryptography

Oxford Instruments are at the forefront of enabling future quantum communications infrastructure. Our technologies provide solutions to a wide range of challenges in this rapidly evolving market and are critical to the development of a future quantum internet. These include:

  • Robust, high quality, scalable fabrication of integrated photonic components
  • World-leading cameras for detection of single-photon and quantum entanglement
  • Cryo-free and flow cryostats for R&D on novel quantum communication and memory

Today’s datacom infrastructure cloud can become vulnerable to attack by future quantum computers. Furthermore, anything communicated today may be stored and accessed in the future by a hacker armed with a quantum computer. Quantum communications encompasses new methods of securing our digital information. Miniaturisation of components, systems integration and reduction in power consumption plays a critical role when designing photonic architectures impacting in quantum technologies.

Quantum communications relies on enabling components such as quantum random number generators, quantum repeaters etc. To ensure true randomness, seed numbers and algorithms can be replaced by a quantum physical process. InP lasers and InGaAs avalanche photodiodes are used to generate and detect random photon streams. Telecoms and financial services organisations have established programs for disaster recovery and secure communications in place today using quantum key distribution.

Detection of Single Photons and Quantum Entanglement

Our iXon Ultra EMCCD imaging cameras are used to superb effect in systems where spatially correlated photons, incident on an imaging array, need to be detected with superb levels of discrimination and confidence, ultimately yielding accelerated measurement throughout.

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Fabrication of Integrated Photonics Devices for Quantum Communication

Oxford Instruments offers plasma-enhanced deposition and etching solutions for integrated Quantum photonics device fabrication. Our solutions are tailored to enable both cutting-edge device development, as well as scaling up to reliable, high throughput fabrication up to 200mm wafers.

Three key applications for photonic integrated circuits for quantum are available:

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Cryostats with optical access for low temperature measurements

Sources of single photons on demand form critical components to enable quantum communication protocols like QKD, PQC as well as to enable coherent sources of photons for quantum repeaters, for example. To maximise the expected secure key and the communication distance for quantum key distribution, and to enable robust high throughput detection of incoming photons, new device and protocols need to be developed which require integration of the detector devices on low-temperature optical cryostats. Oxford Instruments provide flexible cryogenic solutions with several optical access, measurement and cooling options.

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Related Webinars

Plasma Technology & NanoScience
Watch on demand
Quantum Technology: Challenges & Solutions for Device Fabrication & Characterisation

This webinar provides an overview of device fabrication and characterisation challenges and solutions for applications in Quantum Technology like Quantum computing, communications and sensing. 

Plasma Technology
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Diamond Quantum Technologies: Advancements in Engineering NV Centre Devices

Defects in diamond crystals which form its colour centres are a very valuable source of quantum systems. The NV centres in diamond possess an electron spin state that can be used as an excellent spin qubit. In this webinar, we will address the key advancements in the optimisation of processes for the fabrication of these powerful quantum devices.

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