Quantum Computing

The supply chain for the magnets quantum computers require is dominated by a single country. One startup wants to break that dependency using the very machines it threatens.

Quantum computing's scaling problem isn't about qubits. It's about photons. One startup just got $55M to fix that.

QuSecure just got added to an already-crowded NIST consortium for post-quantum crypto work — three years after it started. Here is what that actually means for the migration timeline.

The math behind Bitcoin security just got 20 times easier for a quantum computer to break. One Ethereum researcher puts the odds of compromise by 2032 at 10 percent.

The headlines said Q-Day is 2029. The actual story is that two different Google teams are pointing at the same year for different reasons — and conflating them makes the quantum threat look closer than it is.

The transistors already inside your phone chip could, in simulation, read out a quantum bit. Tanamoto and Ono propose replacing specialized quantum charge sensors with mainstream GAA transistors — the kind Samsung and Intel manufacture by the billions. No hardware was tested.

Previous circularly polarized light sensors needed different materials for each wavelength band. The DGIST team put the chiral element in the electron transport layer instead, letting a single device read photon spin from UV to short-wave IR.

The Nature Communications paper hit 99.6% qubit fidelity using a chip-scale laser instead of rooms of vibration-isolated optics. The “shrink quantum computers” framing is the press release talking, not the physics. The paper shows one laser on one ion.

For years, only massless light particles could be entangled. Scientists just did it with helium atoms — particles heavy enough to fall.

Most quantum researchers build better filters. These ones got quantum physics to do the filtering for them.

Within just 16 days, rival researchers in Taiwan and Shenzhen independently announced major breakthroughs in an overlooked hardware architecture. That coincidence hides a much larger geopolitical strategy.