On May 22, 2024, the United States and Germany signed a Joint Statement on Cooperation in Quantum Information Science and Technology (QIST) in Berlin, alongside a Joint Committee Meeting on science and technology cooperation between the two nations.

That’s exactly what Harvard physicists have done, using existing Boston-area telecommunication fiber, in a demonstration of the world’s longest fiber distance between two quantum memory nodes. Think of it as a simple, closed internet carrying a signal encoded not by classical bits like the existing internet, but by perfectly secure, individual particles of light.

Alice & Bob, a global leader in the race for fault-tolerant quantum computing, today announces the immediate availability on Google Cloud Marketplace of a new single cat-qubit chip in the ”Boson” series. The company’s signature technology, the cat qubit, is regarded as one of the most promising platforms for the realization of fault-tolerant quantum computers. The launch of Boson 4 marks the first time a cat qubit has become available to the public.

Researchers from the University of Basel and the NCCR SPIN have achieved the first controllable interaction between two hole spin qubits in a conventional silicon transistor. The breakthrough opens up the possibility of integrating millions of these qubits on a single chip using mature manufacturing processes.

Infleqtion, the world's leading quantum information company, is pleased to announce it has been awarded a contract to develop and deliver a cutting-edge neutral atom quantum computing testbed for the National Quantum Computing Centre (NQCC). The Quantum Computing SBRI program, supported by Innovate UK, aims to deploy seven quantum computing testbeds at the NQCC by March 2025.

nfleqtion, the world’s leading quantum information company, today announced it has acquired two integrated silicon photonics companies: SiNoptiq Inc. and Morton Photonics Inc. These acquisitions enable Infleqtion to expedite plans for chip-scale integration of lasers and photonic and atomic systems, which is essential for commercializing quantum products, such as sensors and quantum computers, as well as bolstering the overall quantum supply chain and enabling quantum manufacturing at scale.

Research teams led by Prof. PAN Jianwei, LU Chaoyang, HU Yongheng, and others have realized a high-performance single-photon source with an efficiency beyond the scalable linear optical quantum computing loss tolerance threshold for the first time, and the comprehensive indicators have reached the international advanced level. The results were published in Nature Photonics on February 28th.

Prof. Liang Jiang and his postdoctoral associate Zhaoyou Wang at the University of Chicago Pritzker School of Molecular Engineering (UChicago PME) have developed a new scheme to send quantum information through these transducers. Using their technique, they found they could send a full qubit’s information through a channel, paving the way for hybrid quantum networks. The results were published in Physical Review X.

Professor Thomas Vidick joined EPFL in late 2024. He works on problems at the interface of quantum information, theoretical computer science and cryptography. Thomas Vidick discovered quantum mechanics at the Master’s level and thought it was fascinating.

Yawen Peng, a PhD candidate in electrical and computer engineering, is the first recipient of the new Samit & Reshma Sharma foundation scholarship, which supports Institute for Quantum Computing (IQC) graduate studies with significant practical impact in quantum information research.