qubit

Hardware-aware approach for fault-tolerant quantum computation

Our article “Topological and subsystem codes on low-degree graphs with flag qubits” [1], published in Physical Review X, takes a bottom-up approach to quantum error correcting codes that are adapted to a heavy-hexagon lattice – a topology we implement in our latest 65-qubit Hummingbird (r2) chip, available to IBM Q Network users in the Manhattan-named system.

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Building single-atom qubits under a microscope

In the paper “Coherent spin manipulation of individual atoms on a surface,” published in the journal Science, our team demonstrated the use of single atoms as qubits for quantum information processing. This is the first time a single-atom qubit has been achieved using a Scanning Tunneling Microscope.

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Controlling Nuclear Noise in Semiconductor Qubits

Fluctuations of nuclear spins may limit the lifetime of spin qubits. A technique is developed that gets such fluctuations under control.

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Cramming More Power Into a Quantum Device

To achieve Quantum Advantage in the 2020s, we need to at least double Quantum Volume every year.

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Testing Next-Gen Qubits

The qubit, that fundamental element of information processing on a quantum computer, is getting a research boost from the National Science Foundation’s Research Advanced by Interdisciplinary Science and Engineering (RAISE): Transformational Advances in Quantum Systems (TAQS) grant for “materials spectroscopy for next generation superconducting qubits,” one of 25 grants awarded under this effort. The goal […]

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What’s in a qubit?

Would a carrier of information, by any other physical phenomenon, be as powerful? Over the last few months, we’ve shared some videos from members of our research team explaining key concepts in quantum computing. We told you about superposition, entanglement, and quantum algorithms. And we took you behind the scenes and into our lab, in […]

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First steps towards programming a quantum computer over the cloud

Since last year, scientists, students, and the quantum computing curious have been able to explore the world’s first and only cloud-enabled quantum computing platform, the IBM Quantum Experience. They’re running well-known canonical quantum algorithms, such as two-qubit Grover’s Search, and even trying their own experiments on our IBM Cloud-hosted five-qubit quantum processor. We designed the […]

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Dealing with errors in quantum computing

Our team at the Thomas J Watson Research Center published results in the paper Implementing a strand of a scalable fault-tolerant quantum computing fabric in Nature Communications (1) about recent experimental steps toward a “surface code” that shows promise for correcting these errors – and bringing fault-tolerant quantum computers a step closer to reality.

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