Quantum measurement carries information even when the measurement outcome is unread
New principle sets maximum limit on quantum information communication
Proposed experiment offers new way to generate macroscopic entanglement
Quantum eavesdropper steals quantum keys
Industrial control a weak link in cybersecurity, study says
Cybersecurity threats are rising for industrial control systems around the world, a growing target for attackers seeking to wreak havoc, a study showed Thursday.
Never mind the noise: Quantum entanglement allows channel information rate to exceed Shannon zero-error capacity
Getting around the 'uncertainty principle': Physicists make first direct measurements of polarization states of light
Researchers at the University of Rochester and the University of Ottawa have applied a recently developed technique to directly measure for the first time the polarization states of light. Their work both ...
Distant artificial atoms cooperate by sharing light, physicists show
An international team of scientists has shown for the first time that atoms can work collectively rather than independently of each other to share light.
Making quantum encryption practical
One of the many promising applications of quantum mechanics in the information sciences is quantum key distribution (QKD), in which the counterintuitive behavior of quantum particles guarantees that no one can eavesdrop on ...
'Standard quantum limit' smashed, could mean better fiber-optic comms
(Phys.org)—Communicating with light may soon get a lot easier, hints recent research* from the National Institute of Standards and Technology (NIST) and the University of Maryland's Joint Quantum Institute ...
Quantum entanglement with notification
(Phys.org) -- German scientists have demonstrated a method of heralding entanglement between distant stationary quantum systems without destroying this particular state. The experimental set-up paves the way ...
A quantum simulator for magnetic materials
Physicists understand perfectly well why a fridge magnet sticks to certain metallic surfaces. But there are more exotic forms of magnetism whose properties remain unclear, despite decades of intense research. ...
16 atomic ions simulate a quantum antiferromagnet
(Phys.org) —Frustration crops up throughout nature when conflicting constraints on a physical system compete with one another. The way nature resolves these conflicts often leads to exotic phases of matter ...
Physicists create nanoscale spinning magnetic droplets
Researchers have successfully created a magnetic soliton – a nano-sized, spinning droplet that was first theorized 35 years ago. These solitons have implications for the creation of magnetic, spin-based computers.