July 27, 2022• Physics 15, 116 Three experiments demonstrate the key elements of a quantum cryptographic scheme that predictions indicate should be unhackable, bringing the promise of quantum encryption technologies a step closer to reality. W. Z. Liu and C. Wu/University of Science and Technology of China Device-independent quantum key […]
Quantum Computer
Anti-butterfly effect enables new benchmarking of quantum computer performance
Bin Yan, shown here, Nikolai Sinitsyn and Joseph Harris developed a new method that determines how much information is lost from a quantum system to decoherence and how much is preserved through information scrambling. Credit: Los Alamos National Laboratory Research drawing on the quantum “anti-butterfly effect” solves a longstanding experimental […]
New method of controlling qubits could advance quantum computers
Quantum memories made of electron or nitrogen spins in NV centers in diamond that can be individually accessed by light and precisely manipulated by microwaves. Credit: Yokohama National University Quantum computing, a field that relies on the principles of quantum mechanics to calculate outcomes, has the potential to perform tasks […]
An alternative superconducting qubit achieves high performance for quantum computing
SEM image of the two-qubit fluxonium processor. Credit: Bao et al. Quantum computers, devices that exploit quantum phenomena to perform computations, could eventually help tackle complex computational problems faster and more efficiently than classical computers. These devices are commonly based on basic units of information known as quantum bits, or […]
Brand-new phase of matter created acts like it has two time dimensions
A study on the new phase of matter titled “Dynamical topological phase realized in a trapped-ion quantum simulator” has been published in the journal Nature. VIEW GALLERY – 2 IMAGES An international team of researchers has fired a specific sequence of laser pulses at atoms in a quantum computer, causing […]
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Physicists Create Mind-Bending New Phase of Matter That Acts Like It Has Two Time Dimensions
Physicists have created a remarkable, never-before-seen phase of matter in a quantum computer. Physicists demonstrated a way of storing quantum information that is less prone to errors by subjecting a quantum computer’s qubits to quasi-rhythmic laser pulses based on the Fibonacci sequence. Physicists have created a remarkable, never-before-seen phase of […]
a phase of matter that exists in two time dimensions
Scientists with funding from the Simons Foundation produced a phase of matter that behaves as if it exists in two time dimensions, according to a press release by the institution published on Wednesday. The researchers created the strange material by shining a sequence of laser pulses inspired by the Fibonacci numbers […]
Quantum computer works with more than zero and one
The Innsbruck quantum computer stores information in individual trapped calcium atoms, each of which has eight states, of which the scientists have used up to seven for computing. Credit: Uni Innsbruck/Harald Ritsch We all learn from early on that computers work with zeros and ones, also known as binary information. […]
New phase of matter with 2D time created in quantum computer
Quantum computers hold the promise of revolutionising information technology by utilising the whacky physics of quantum mechanics. But playing with strange, new machinery often throws up even more interesting and novel physics. This is precisely what has happened to quantum computing researchers in the US. Reported in Nature, physicists who […]