Jan 18, 2019 | Updated: 08:24 AM EST

Researchers from National University of Singapore and Caltech Discover Quantum States Fingerprint to Prevent Quantum Computing Error

Jun 01, 2017 10:48 AM EDT


The international team of researchers has discovered that all entangled states of quantum objects have a distinctive fingerprint. This finding of entangled quantum state fingerprint is able to prevent error in the quantum computing and cryptography.

The team from the Center for Quantum Technologies at the National University of Singapore and California Institute of Technology has found that the presence of entangled quantum state fingerprint can help to certify both quantum computers and quantum cryptography. This finding is a breakthrough in the quantum mechanical field.

The scientists who work on finding the entangled quantum state fingerprint are Goh Koon Tong and Valerio Scarani from the National University of Singapore and their peer from the Institute for Quantum Information and Matter at the Caltech, Andrea Coladangelo. They have also published their finding in the journal Nature Communications on May 26.

"I like to see our work as bringing the power of testing quantum devices to the consumers," Goh said about their work to find the entangled quantum state fingerprint. "Currently, only those who build the devices or understand the engineering aspect of them can perform the test."

Their finding is enabling anyone to conduct self-testing for the quantum computers and cryptography and ensure the validity of the quantum data. In order to do that, determining an entangled quantum state fingerprint is a crucial moment. Therefore, this finding helps users and also quantum physicists to have their own self-test tool in the lab.

Goh and team started their work from the higher dimensional quantum bits, known as qudit, which has more information density than qubit that only able to store 0 or 1 data. Qudit is able to store more density information. In that states, the entangled quantum state fingerprint can be discovered and accelerate the tasks in quantum computing. Watch the explanation of the basic quantum computer below:

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