Reimagining of Schrödinger’s cat breaks quantum mechanics — and stumps physicists

Reimagining of Schrödinger’s cat breaks quantum mechanics — and stumps physicists

Reimagining of Schrödinger’s cat breaks quantum mechanics — and stumps physicists, Published online: 18 September 2018; doi:10.1038/d41586-018-06749-8

In a multi-‘cat’ experiment, the textbook interpretation of quantum theory seems to lead to contradictory pictures of reality, physicists claim.
Source: Nature

Deterministic teleportation of a quantum gate between two logical qubits

Deterministic teleportation of a quantum gate between two logical qubits

Deterministic teleportation of a quantum gate between two logical qubits, Published online: 05 September 2018; doi:10.1038/s41586-018-0470-y

A teleported controlled-NOT gate is realized experimentally between two logical qubits implemented as superconducting cavity quantum memories, thus demonstrating an important tool for universal computation in a quantum modular architecture.
Source: Nature

A quantum gate between atoms and photons may help in scaling up quantum computers

The quantum computers of the future will be able to perform computations that cannot be done on today’s computers. These may likely include the ability to crack the encryption that is currently used for secure electronic transactions, as well as the means to efficiently solve unwieldy problems in which the number of possible solutions increases exponentially.
Source: Science Daily

A quantum gate between atoms and photons may help in scaling up quantum computers

The quantum computers of the future will be able to perform computations that cannot be done on today’s computers. These may likely include the ability to crack the encryption that is currently used for secure electronic transactions, as well as the means to efficiently solve unwieldy problems in which the number of possible solutions increases exponentially.
Source: Science Daily

Light from ancient quasars helps confirm quantum entanglement

New research boosts the case for quantum entanglement. Scientists have used distant quasars, one of which emitted its light 7.8 billion years ago and the other 12.2 billion years ago, to determine the measurements to be made on pairs of entangled photons. They found correlations among more than 30,000 pairs of photons — far exceeding the limit for a classically based mechanism.
Source: Science Daily

Spontaneous emission of matter waves from a tunable open quantum system

Spontaneous emission of matter waves from a tunable open quantum system

Spontaneous emission of matter waves from a tunable open quantum system, Published online: 25 July 2018; doi:10.1038/s41586-018-0348-z

An open quantum system containing ultracold rubidium atoms trapped in an optical lattice undergoes spontaneous emission of matter waves into free space.
Source: Nature