Quantum Computing News

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GTRI Study Creates a Transport-Enabled Entangling Gate with Two Trapped Ions

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.

31 Jan 2022

Using Tiny Materials to Build Superconducting Qubits may Lead to Better, Smaller Quantum Devices

Like the transistors in a classical computer, superconducting qubits are the building blocks of a quantum computer. While engineers have been able to shrink transistors to nanometer scales, however, superconducting qubits are still measured in millimeters. This is one reason a practical quantum computing device couldn't be miniaturized to the size of a smartphone, for instance.

28 Jan 2022

New Qubits Could Make a Promising Foundation for Quantum Computers

MIT physicists have discovered a new quantum bit, or "qubit," in the form of vibrating pairs of atoms known as fermions.

27 Jan 2022

New Tool can Determine How Big a Quantum Computer Needs to Be for Solving Problems

Quantum computers are expected to be disruptive and potentially impact many industry sectors. So researchers in the United Kingdom and the Netherlands decided to explore two very different quantum problems: breaking the encryption of Bitcoin (a digital currency) and simulating the molecule responsible for biological nitrogen fixation.

27 Jan 2022

New, Improved Method for Testing the Fidelity of Quantum Gates

The development of quantum technology is currently one of the most popular frontiers of advanced science, and is considered as a significant indicator of a country's sci-tech level.

27 Jan 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 can exist simultaneously in two states — a weird quantum phenomenon known as superposition.

27 Jan 2022

Improved Versions of RPC Circuits Use Quantum Randomness for the First Time

Computers play an important role in many aspects of life today. Digital computers are the most widely used, while quantum computers are well known. However, the least known computers are the so-called Stochastic Pulse Computers.

21 Jan 2022

Developing Topological Quantum Bits to Create Efficient Quantum Computers

Researchers at PSI have compared the electron distribution below the oxide layer of two semiconductors. The investigation is part of an effort to develop particularly stable quantum bits –and thus, in turn, particularly efficient quantum computers. They have now published their latest research, which is supported in part by Microsoft, in the scientific journal Advanced Quantum Technologies.

21 Jan 2022

Semiconductor Spin Qubits Gain More Credibility by Surpassing the 99% Barrier for Two-Qubit Gate Fidelity

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.

20 Jan 2022

Joint Project Aims to Solve Key Challenges Surrounding Diamond-Based Quantum Computers

Quantum Brilliance, a German-Australian manufacturer of innovative quantum computing hardware, today announced a joint research project with the Fraunhofer Institute for Applied Solid State Physics IAF and the University of Ulm to develop new techniques for the fabrication and control of diamond-based quantum microprocessors.

20 Jan 2022