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Bell Test

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Quantum Entanglement Delivers Certifiably Perfect Randomness
science2 months ago

Quantum Entanglement Delivers Certifiably Perfect Randomness

ETH Zurich researchers used a Bell-test experiment with entangled qubits separated by 30 meters and performed over a billion trials in about nine hours to demonstrate randomness amplification that transforms imperfect randomness into certifiably perfect randomness, a device-independent result that could underpin future cryptography and security systems. The work, published in Nature 2026, shows randomness that remains truly unpredictable under rigorous analysis, surpassing previous RNGs that depended on trusted hardware.

via ScienceAlert|
#bell-test#cryptography#entanglement
Device-independent randomness amplification demonstrated with superconducting qubits
science3 months ago

Device-independent randomness amplification demonstrated with superconducting qubits

Researchers demonstrate device-independent randomness amplification by performing a loophole-free Bell test on superconducting circuits, achieving high Bell violation and a fast trial rate to convert weak, imperfect randomness into high-quality randomness—an outcome impossible to achieve classically. The work includes publicly available data and code from ETH Zurich and advances quantum randomness generation with implications for cryptography and quantum information processing.

via Nature|
#bell-test#device-independent#quantum-randomness
Einstein's Quantum Mistake Proven in Experiment.
science-and-technology3 years ago

Einstein's Quantum Mistake Proven in Experiment.

A new experiment using a 30-meter-long tube cooled to close to absolute zero has confirmed the possibility of quantum entanglement, which Albert Einstein was skeptical about. The experiment ran a Bell test using superconducting circuits, which could play a significant role in the development of quantum computers. The experiment is structured in a way that could be used for practical applications, such as secure encrypted communications. The research shows the promise of qubit technology and could eventually find its way into full-scale quantum computers.

via ScienceAlert|
#bell-test#entanglement#quantum-computing
"Quantum Entanglement Challenges Einstein's Theory and Advances Computing"
science-and-technology3 years ago

"Quantum Entanglement Challenges Einstein's Theory and Advances Computing"

Researchers at ETH Zurich have performed a loophole-free Bell test with superconducting circuits, confirming quantum mechanics and disproving Einstein’s local causality concept. The findings open up possibilities in distributed quantum computing and quantum cryptography. The researchers were able to perform the experiment using superconducting circuits for the first time, which are considered promising candidates for building powerful quantum computers. The experiment confirms that superconducting circuits operate according to the laws of quantum mechanics too, even though they are much bigger than microscopic quantum objects such as photons or ions.

via SciTechDaily|
#bell-test#cryptography#distributed-quantum-computing
Superconducting qubits defy Einstein's local causality concept.
science3 years ago

Superconducting qubits defy Einstein's local causality concept.

Researchers at ETH Zurich have performed a loophole-free Bell test using superconducting circuits, further disproving Albert Einstein's concept of local causality and providing confirmation for quantum mechanics. The experiment also confirms that superconducting circuits operate according to the laws of quantum mechanics and opens up possibilities for practical applications in cryptography and distributed quantum computing. The researchers built an impressive facility containing a 30-meter-long vacuum tube connecting two cryostats containing superconducting circuits, which were entangled and subjected to random measurements to violate Bell's inequality.

via Phys.org|
#bell-test#entanglement#local-causality