Averaging over quantum inputs mitigates dimensional leakage effects, enabling randomness certification via experimentally accessible continuous-variable implementations using low-squeezing Gaussian states and homodyne detection.

#QuantumCryptography #QuantumRandomness #Research

Random quantum circuits approximating unitary k-designs now proven to reproduce output probability distributions of ideal quantum evolution with quantified convergence rates—enabling high-entropy random number generation from shallow circuits.

#QuantumCircuits #UniversalDesigns #QuantumRandomness

First semi-device-independent certificate for quantum randomness from semiconductor spin noise: certified entropy rates of 3.2–3.4 Gbit/s from InGaAs quantum dots and 33 Mbit/s from GaAs, exceeding prior spin-noise generators by >100×.

#QuantumRandomness #Semiconductors #Research

Proves certified randomness generation is feasible in energy-constrained prepare-and-measure systems against fully quantum adversaries using NPA hierarchy relaxations, resolving an open theoretical question in quantum cryptography.

#QuantumCryptography #QuantumRandomness #Research

June 24–27 | Messe München

Play. Win. Experience quantum like never before.

#WorldOfQuantum #XeedQ #XQ1 #QuantumComputing #QuantumRandomness

Perfect Randomness Achieved Through Quantum Means

ETH Zurich researchers created perfect random numbers using a new quantum method. This could make online security much stronger.

#QuantumRandomness, #ETHZurich, #Cyber...

https://newsletter.tf/eth-zurich-perfect-randomness-quantum-method-security/

New SDP method enables precise computation of quantum randomness in prepare-and-measure setups, tightening bounds on certifiable QRNG output and showing how entanglement increases eavesdropper predictability—advancing quantum cryptography.

#QuantumCryptography #QuantumRandomness #Research

Novel semi-DI QRNGs require only a trusted photodiode. Recycling input randomness achieves 0.537 bits/round and positive expansion in ~10^5 rounds—outperforming DI protocols under strictly weaker assumptions and realistic experimental conditions.

#QuantumRandomness #QRNG #Research