Search results for single-qubit

Quantum Physics Jan 28, 2022

New approach transports trapped ions to create entangling gates

Trapped ions excited with a laser beam can be used to create entangled qubits in quantum information systems, but addressing several stationary pairs of ions in a trap requires multiple optical switches and complex controls. ...

Quantum Physics Jan 26, 2022

Vibrating atoms make robust qubits, physicists find

MIT physicists have discovered a new quantum bit, or "qubit," in the form of vibrating pairs of atoms known as fermions. They found that when pairs of fermions are chilled and trapped in an optical lattice, the particles ...

Quantum Physics Jan 20, 2022

Groundbreaking light sources can increase effectiveness and security of transferring quantum information

Entanglement is a central phenomenon of quantum mechanics. It enables two photons to be connected with each other regardless of distance, and it is the basis of the immense potential of quantum technologies. However, the ...

Quantum Physics Jan 19, 2022

Semiconductor spin qubits gain further credibility as leading platform for quantum computing

Researchers at QuTech—a collaboration between the Delft University of Technology and TNO—have taken an important step for semiconductor spin qubits by surpassing the 99% barrier for two-qubit gate fidelity. They report ...

Quantum Physics Jan 19, 2022

Gate set tomography: How physicists are revealing the inner workings of quantum computers

A precision diagnostic developed at the Department of Energy's Sandia National Laboratories is emerging as a gold standard for detecting and describing problems inside quantum computing hardware.

Quantum Physics Jan 19, 2022

Scientists achieve key elements for fault-tolerant quantum computation in silicon spin qubits

Researchers from RIKEN and QuTech—a collaboration between TU Delft and the Netherlands Organisation for Applied Scientific Research (TNO)— have achieved a key milestone toward the development of a fault-tolerant quantum ...

Quantum Physics Jan 19, 2022

Enhancing simulations of curved space with qubits

One of the mind-bending ideas that physicists and mathematicians have come up with is that space itself—not just objects in space—can be curved. When space curves (as happens dramatically near a black hole), sizes and ...

Nanophysics Jan 12, 2022

Building a silicon quantum computer chip atom by atom

A University of Melbourne-led team has perfected a technique for embedding single atoms in a silicon wafer one-by-one. Their technology offers the potential to make quantum computers using the same methods that have given ...

Quantum Physics Jan 11, 2022

Semiconductor demonstrates elusive quantum physics model

With a little twist and the turn of a voltage knob, Cornell researchers have shown that a single material system can toggle between two of the wildest states in condensed matter physics: The quantum anomalous Hall insulator ...

Quantum Physics Jan 11, 2022

In-fridge controller could scale up quantum computers

A collaboration between computer scientists and physicists at the University of Chicago broke through one of the key obstacles for large-scale quantum computing by figuring out how to move their control signals "inside the ...

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