This is the question tackled by theoretical physicists working on quantum gravity by creating models attempting to reconcile gravity and quantum mechanics.
Some of these models predict that spacetime at the Planck scale (10^-33cm) is no longer continuous — as held by classical physics — but discrete in nature.
Just like the solids or fluids we come into contact with every day, which can be seen as made up of atoms and molecules when observed at sufficient resolution. A structure of this kind generally implies, at very high energies, violations of Einstein’s special relativity (a integral part of general relativity).
Quantum encryption uses the principle of “quantum entanglement” to foster communication that’s totally safe against eavesdropping and decryption by others.
The satellite’s true military nature is being disguised under the civilian name, Quantum Experiments at Space Scale, or QUESS. Publicly, QUESS is being billed as an international research project in the field of quantum physics.
Micius or Mozi is operated by the Chinese Academy of Sciences (CAS) while the University of Vienna and the Austrian Academy of Sciences run the satellite’s European receiving stations. The quantum satellite was launched last Aug. 16 from the Jiuquan Satellite Launch Center in the Gobi Desert.
The paradox of Schrödinger’s cat—in which a quantum cat is both alive and dead at the same time until we check to see which state it’s in—is arguably the most famous example of the bizarre counter-intuitive nature of the quantum world. Now, Stanford physicists have exploited this feature weirdness to make highly detailed movies of the inner machinery of simple iodine molecules.
Definitely less than a decade and even less than 7 especially with China Quantum Satellite, Google’s plan release next year of a Quantum device, etc. I hope folks don’t still believe that we’re immune from a QC attack after 2025.
In a rare public speech, Greta Bossenmaier, chief of the Communications Security Establishment, said cryptologists at the CSE and around the world are racing to find new cryptographic standards before Y2Q — years to quantum — predicted for 2026.
She is the third senior CSE official this week to warn publicly of the threat quantum computing poses to widely used public key cryptography (PKC), protecting sensitive data transmissions from hackers, hacktivists, foreign state spies and other malicious actors.
READ MORE: Why the silencing of KrebsOnSecurity opens a troubling chapter for the internet.
The diamond microdisk made by Paul Barclay and his team of physicists could lead to huge advances in computing, telecommunications, and other fields.
Barclay and his research group — part of the University of Calgary’s Institute for Quantum Science and Technology and the National Institute of Nanotechnology — have made the first-ever nano-sized optical resonator (or optical cavity) from a single crystal of diamond that is also a mechanical resonator.
The team also measured — in the coupling of light and mechanical motion in the device — the high-frequency, long-lasting mechanical vibrations caused by the energy of light trapped and bouncing inside the diamond microdisk optical cavity.
