Qubits

New Invention Keeps Qubits Of Light Stable At Room Temperature

Researchers from University of Copenhagen have developed a new technique that keeps quantum bits of light stable at room temperature instead of only working at -270 degrees. Their discovery saves power and money and is a breakthrough in quantum...
Related topics: Quantum, Physics, Scientific Discoveries

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Clearing The Way Toward Robust Quantum Computing

MIT researchers have made a significant advance on the road toward the full realization of quantum computation, demonstrating a technique that eliminates common errors in the most essential operation of quantum algorithms, the two-qubit operation or...
Related topics: Quantum, Physics, Algorithms

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Researchers Realize Unconventional Coherent Control Of Solid-state Spin Qubits

A research team led by Prof. Guo Guangcan from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), together with Prof. Adam Gali from Wigner Research Centre for Physics, realized robust coherent control...
Related topics: Physics

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A Path To Graphene Topological Qubits

Researchers demonstrate that magnetism and superconductivity can coexist in graphene, opening a pathway towards graphene-based topological qubits.
Related topics: Graphene, Superconductors

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Ion Beams Mean A Quantum Leap For Color-center Qubits

Achieving the immense promise of quantum computing requires new developments at every level, including the computing hardware itself. A Lawrence Berkeley National Laboratory (Berkeley Lab)-led international team of researchers has discovered a way...
Related topics: Quantum, Physics, Scientific Discoveries

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Sensitive Qubit-based Technique To Accelerate Search For Dark Matter

Scientists at the Department of Energy's Fermi National Accelerator Laboratory and the University of Chicago have demonstrated a new technique based on quantum technology that will advance the search for dark matter, the invisible stuff that...
Related topics: Fermilab, Quantum, Physics

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Researchers Extend The Life Of A Dipolar Molecule

Researchers lengthen the lifetime of a dipolar molecule to almost three and a half seconds, a luxury of time during which they maintained the full quantum control necessary for stable qubits, the building blocks for a wide variety of exciting...
Related topics: Quantum, Physics

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Spin-to-charge Conversion Achieves 95% Overall Qubit Readout Fidelity

A team led by Professor Du Jiangfeng and Professor Wang Ya from the Chinese Academy of Sciences (CAS) Key Laboratory of Microscale Magnetic Resonance of the University of Science and Technology of China put forward an innovative spin-to-charge...

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Semiconductor Qubits Scale In Two Dimensions

The heart of any computer, its central processing unit, is built using semiconductor technology, which is capable of putting billions of transistors onto a single chip. Now, researchers have shown that this technology can be used to build a...
Related topics: Semiconductors

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Optical Fiber Could Boost Power Of Superconducting Quantum Computers

The secret to building superconducting quantum computers with massive processing power may be an ordinary telecommunications technology - optical fiber. Physicists have measured and controlled a superconducting quantum bit (qubit) using...
Related topics: Optical Fibers, Superconductors, Quantum

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When Memory Qubits And Photons Get Entangled

Encrypting data in a way that ensures secure communication is an ever-growing challenge because crucial components of today's encryption systems cannot withstand future quantum computers. Researchers around the world are therefore working on...
Related topics: Quantum, Physics

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Blueprint For Fault-tolerant Qubits

Building a quantum computer is a challenging task because of the fragility of quantum bits. To deal with this problem, various types of active error correction techniques have been developed. In contrast, researchers have now proposed a design for...
Related topics: Quantum, Physics

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Beyond Qubits: Next Big Step To Scale Up Quantum Computing

Researchers have invented a device that operates at 40 times colder than deep space to directly control thousands of qubits, the building blocks of quantum computers.
Related topics: Quantum, Physics

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Electrically Switchable Qubit Can Tune Between Storage And Fast Calculation Modes

To perform calculations, quantum computers need qubits to act as elementary building blocks that process and store information. Now, physicists have produced a new type of qubit that can be switched from a stable idle mode to a fast calculation...
Related topics: Quantum

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Important Milestone In The Creation Of A Quantum Computer

Quantum computer: One of the obstacles for progress in the quest for a working quantum computer has been that the working devices that go into a quantum computer and perform the actual calculations, the qubits, have hitherto been made by...
Related topics: Quantum, Physics

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A Photonic Crystal Coupled To A Transmission Line Via An Artificial Atom

Researchers have recently displayed the interaction of superconducting qubits; the basic unit of quantum information, with surface acoustic wave resonators; a surface-wave equivalent of the crystal resonator, in quantum physics. This phenomena opens...
Related topics: Superconductors, Quantum, Physics

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Quantum Heat Engine Behaviour Observed In A Qubit

Although many of today's accepted theories of classical thermodynamics predate even the industrial revolution they helped to propel, many open questions remain around how these ideas translate to the level of single quantum systems. In particular,...
Related topics: Quantum, Physics

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D-wave Launches Its 5,000+ Qubit Advantage System

D-Wave today announced the launch of its new Advantage quantum computers. These new systems, with over 5,000 qubits and 15-way qubit connectivity, are now available in the company’s Leap cloud computing platform. That’s up from about...
Related topics: Quantum, Physics

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New Technology Lets Quantum Bits Hold Information For 10,000 Times Longer Than Previous Record

Quantum bits, or qubits, can hold quantum information much longer now thanks to efforts by an international research team. The researchers have increased the retention time, or coherence time, to 10 milliseconds—10,000 times longer than the...
Related topics: Quantum, Physics

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Wiring A New Path To Scalable Quantum Computing

Last year, Google produced a 53-qubit quantum computer that could perform a specific calculation significantly faster than the world's fastest supercomputer. Like most of today's largest quantum computers, this system boasts tens of qubits—the...
Related topics: Quantum, Google

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