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single photons
Photonic Quantum Computing
Integrated quantum photonics
Just as electronic microchips changed the world of computers, it is believed that an equivalent integrated quantum photonics platform will fulfill its application as a scalable quantum solution.
Keeping the light on-chip with an efficiency of >90% is one of Sparrow Quantum's greatest achievements.
How true single photons opens a world of multiphoton applications
At the base of quantum computation protocols, you find multi-photon interactions. Information processing requires a large array of single-photons to be simultaneously available at N different ports. By actively demultiplexing the single-photons from a Sparrow Quantum source into different spatial modes such a system can be achieved.
This scheme has shown great success in recent Boson sampling implementation. Opening a world of multiphoton applications.
Buy 1 single-photon source and you get streams of >50 indistinguishable photons on demand for free!
Secure Quantum Communication
Quantum key distribution
The transfer of secure communication relies on both parties sharing a secret key. This key can be transferred between communicators by storing information in flying qubits – single photons. This ensures that the quantum channel is secured by the laws of quantum mechanics.
Quantum networks
It is widely acknowledged that a huge quantum network will rely on many different constellations of quantum hardware. In such systems devices for measurement and detection might be provided by third-parties or shared between users. Though the quantum channel is secured by the laws of nature, the devices are not. So, the question is do you trust your suppliers?
Luckily, quantum physics got you covered. Next generation quantum key distribution will close all loopholes. Thereby realizing the ultimate form of security by what is known as device-independent quantum key distribution.
Enabling next generation quantum cryptography
Device-independent quantum key distribution is the art of distributing secret keys with the use of untrusted devices. This is considered to be the future of secure loophole free quantum key distributions. And guess what – the necessary building blocks are high indistinguishable single-photons.
Photonic Quantum Computing
Integrated quantum photonics
Just as electronic microchips changed the world of computers, it is believed that an equivalent integrated quantum photonics platform will fulfill its application as a scalable quantum solution.
Keeping the light on-chip with an efficiency of >90% is one of Sparrow Quantum’s greatest achievements.
How true single photons opens a world of multiphoton applications
At the base of quantum computation protocols, you find multi-photon interactions. Information processing requires a large array of single-photons to be simultaneously available at N different ports.
By actively demultiplexing the single-photons from a Sparrow Quantum source into different spatial modes such a system can be achieved.
This scheme has shown great success in recent Boson sampling implementation. Opening a world of multiphoton applications.
Buy 1 single-photon source and you get streams of >50 indistinguishable photons on demand for free!
Secure Quantum Communication
Quantum key distribution
The transfer of secure communication relies on both parties sharing a secret key. This key can be transferred between communicators by storing information in flying qubits – single photons. This ensures that the quantum channel is secured by the laws of quantum mechanics.
Quantum networks
It is widely acknowledged that a huge quantum network will rely on many different constellations of quantum hardware.
In such systems devices for measurement and detection might be provided by third-parties or shared between users. Though the quantum channel is secured by the laws of nature, the devices are not. So, the question is do you trust your suppliers?
Luckily, quantum physics got you covered. Next generation quantum key distribution will close all loopholes. Thereby realizing the ultimate form of security by what is known as device-independent quantum key distribution.
Enabling next generation quantum cryptography
Device-independent quantum key distribution is the art of distributing secret keys with the use of untrusted devices. This is considered to be the future of secure loophole free quantum key distributions. And guess what – the necessary building blocks are high indistinguishable single-photons.
The importance of indistinguishability
Successful demultiplexing as well as device-independent quantum key distribution is only possible when utilizing a stream of photons which maintains indistinguishability across >100 photons. As each path of light must be highly indistinguishable with every other path of light in the system in order to ensure a high degree of quantumness for the overall system.
Think about it like this: Well begun is half done. In any quantum photonics application, the first building block is your single-photon source. If the first component contains an error, it is going to limit the overall performance of the system. For two-photon-interference, the error rate increases exponentially. So you better keep an eye on those indistinguishabilities on the long run!