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“#Can a quantum strategy help bring down the house?” Credit: CC0 Public Domain In some versions of the game blackjack, one way to win against the house is for players at the table to work as a team to keep track of and covertly communicate amongst each other the cards they have been dealt. With…
“#A new test to investigate the origin of cosmic structure” Fluctuations are produced during the early expansion of the universe (inflation) and lead to density fluctuations in the universe, like the temperature variations seen in the cosmic microwave background shown here. One signature of primordial non-Gaussainity is that the variation in temperature at three or…
“#Calculating the benefits of exascale and quantum computers” To keep qubits used in quantum computers cold enough so scientists can study them, DOE’s Lawrence Berkeley National Laboratory uses a sophisticated cooling system. Credit: Thor Swift, Lawrence Berkeley National Laboratory A quintillion calculations a second. That’s one with 18 zeros after it. It’s the speed at…
“#Researchers enhance electron spin longevity” Credit: Daisuke Iizasa, Tohoku University The electron is an elementary particle, a building block on which other systems evolve. With specific properties such as spin, or angular momentum, that can be manipulated to carry information, electrons are primed to advance modern information technology. An international collaboration of researchers has now…
“#Quantum machines learn ‘quantum data’” Credit: CC0 Public Domain Skoltech scientists have shown that quantum enhanced machine learning can be used on quantum (as opposed to classical) data, overcoming a significant slowdown common to these applications and opening a “fertile ground to develop computational insights into quantum systems.” The paper was published in the journal…
“#Scientists make quantum technology smaller” Schematic of the cold atom device with the dielectric metasurface optical chip. Credit: Science Advances (2020). A way of shrinking the devices used in quantum sensing systems has been developed by researchers at the UK Quantum Technology Hub Sensors and Timing, which is led by the University of Birmingham. Sensing…
“#Healing an Achilles’ heel of quantum entanglement” Louisiana State University physicist Mark Wilde and Xin Wang of Baidu Research’s mathematical formula, called κ entanglement or max-logarithmic negativity (upper left) makes it possible to effeciently calculate the cost of entanglement, which in itself is an entanglement measure, in the creation of a two-party quantum state. Credit:…
“#Simulating quantum ‘time travel’ disproves butterfly effect in quantum realm” In research by a team at Los Alamos National Laboratory, Alice prepares her qubit and applies the information scrambling unitary U to this and many other qubits altogether. Bob measures her qubit in any basis, flipping the qubit to the state not known to Alice….
“#’Giant atoms’ enable quantum processing and communication in one” Credit: CC0 Public Domain MIT researchers have introduced a quantum computing architecture that can perform low-error quantum computations while also rapidly sharing quantum information between processors. The work represents a key advance toward a complete quantum computing platform. Previous to this discovery, small-scale quantum processors have…
“#A method to predict the properties of complex quantum systems” Credit: Huang, Kueng & Preskill. Predicting the properties of complex quantum systems is a crucial step in the development of advanced quantum technologies. While research teams worldwide have already devised a number of techniques to study the characteristics of quantum systems, most of these have…