In a newly published study, researchers from the University of Vienna detail a new model of a quantum computer, the boson sampling computer. Harnessing the unique features of the quantum world promises a dramatic speed-up in information processing as compared to the fastest classical machines. Scientists from the Group of Philip Walther from the Faculty [...]

In a new study, researchers demonstrate an improvement of more than two orders of magnitude in the spin coherence time of nitrogen-vacancy centers as compared with previous measurements. The findings could advance quantum sensing, enable squeezing and many-body entanglement, and open a path to simulating driven, interaction-dominated quantum many-body Hamiltonians. From brain to heart to [...]

UC Santa Barbara researchers developed an all-optical scheme for controlling individual quantum bits in semiconductors using pulses of light, opening up new paths toward the creation of quantum computers. Santa Barbara, California –– By using light, researchers at UC Santa Barbara have manipulated the quantum state of a single atomic-sized defect in diamond –– the [...]

Observations of a newly discovered pulsar and its white dwarf companion, orbiting each other once every two and a half hours, show that the binary’s orbital decay is consistent with Einstein’s Theory of General Relativity. A strange stellar pair nearly 7,000 light-years from Earth has provided physicists with a unique cosmic laboratory for studying the [...]

In a newly published study, researchers detail how they used a cloud of rubidium atoms as an optical memory device, showing that portions of an image written into a gradient echo memory can be individually retrieved or erased on demand, an important step toward processing a spatially multiplexed quantum signal. Talk about storing data in [...]

Physicists from Ludwig Maximilian University of Munich have successfully transmitted a secure quantum code through the atmosphere from an aircraft to a ground station. This is the first time that quantum cryptography has been used for communication with a mobile transmitter and it demonstrates that quantum cryptography can be implemented as an extension to existing [...]

Two newly published studies challenge established wisdom about the nature of vacuum, finding that ephemeral vacuum particles induce speed-of-light fluctuations. In one paper, Marcel Urban from the University of Paris-Sud, located in Orsay, France and his colleagues identified a quantum level mechanism for interpreting vacuum as being filled with pairs of virtual particles with fluctuating [...]

In a newly published study, physicists at UC Santa Barbara used a switch to manipulate light on superconducting chips, providing a new understanding in the quantum realm. Santa Barbara, California –– Physicists at UC Santa Barbara are manipulating light on superconducting chips, and forging new pathways to building the quantum devices of the future –– [...]

Using an artificial atomic nuclei fabricated on graphene, a team of researchers imaged the “atomic collapse” states theorized to occur around super-large atomic nuclei. The first experimental observation of a quantum mechanical phenomenon that was predicted nearly 70 years ago holds important implications for the future of graphene-based electronic devices. Working with microscopic artificial atomic [...]

A newly published study looks at recent advances in quantum measurements, coherent control, and the generation of entangled states, while describing some of the challenges that remain ahead for quantum computing and other applications. New tech­nolo­gies that exploit quan­tum behav­ior for com­put­ing and other appli­ca­tions are closer than ever to being real­ized due to recent [...]

Scientists at the University of Pittsburgh and Delft University of Technology have developed a new method for controlling the coherence of quantum bits, moving a step closer to creating the first viable high-speed quantum computer. Pittsburgh — Recent research offers a new spin on using nanoscale semiconductor structures to build faster computers and electronics. Literally. [...]

Four groups of scientists announced progress on a quantum-computing proposal made two years ago by MIT researchers that has the potential to lead towards the “quantum singularity.” In early 2011, a pair of theoretical computer scientists at MIT proposed an optical experiment that would harness the weird laws of quantum mechanics to perform a computation [...]