Researchers from RIKEN and QuTech—a collaboration between TU Delft and TNO— have achieved a key milestone toward the development of a fault-tolerant quantum computer. They were able to demonstrate a two-qubit gate fidelity of 99.5 […]

Long-duration quantum memories for photonic qubits are essential components for achieving long-distance quantum networks and repeaters. The mapping of optical states onto coherent spin-waves in rare earth ensembles is a particularly promising approach to quantum […]

Experimental physicists have succeeded for the first time in controlling protected quantum states – so-called dark states – in superconducting quantum bits. The entangled states are 500 times more robust and could be used, for […]

Quantum computers could be constructed cheaply and reliably using a new technique perfected by a University of Melbourne-led team that embeds single atoms in silicon wafers, one-by-one, mirroring methods used to build conventional devices. The […]

A team of researchers at the University of Chicago have achieved two major breakthroughs to overcome common challenges for quantum systems: They were able to read out their qubit on demand, and then keep the quantum state […]

Communication between quantum systems depends on their ability to effectively interact with light. Some molecular crystals have proven to be new materials with excellent quantum properties. They are of great interest for creating quantum computers […]

A collaborative study confirms a potential new switching mechanism for a proposed generation of ultra-low energy topological electronics. Based on novel, quantum nanoribbons terminating on ‘zigzag’ edges, such devices would switch from non-conducting to conducting […]

Tunneling defects in disordered materials form spurious two-level systems which are a major source of decoherence for micro-fabricated quantum devices. For superconducting qubits, defects in tunnel barriers of submicrometer-sized Josephson junctions couple strongest to the […]

Researchers have presented analytical formulas for simplified but useful qubit geometries that predict surface dielectric loss when its thickness is much less than the metal thickness, the limiting case needed for real devices. These formulas […]

Researchers at Oak Ridge National Laboratory and Purdue University have made strides toward a fully Quantum Internet by designing and demonstrating the first ever Bell state analyzer for frequency bin coding. Entanglement between two qubits is considered […]

Physicists have leveraged quantum information theory techniques to reveal a mechanism for amplifying, or ‘stimulating,’ the production of entanglement in the Hawking effect in a controlled manner. Furthermore, these scientists propose a protocol for testing […]

A research group at University of Melbourne has been able to observe a time crystal in action, for the very first time. Time crystals are actually a unique arrangement of particles that are in perpetual and […]

For the first time, University of Chicago researchers have created a hybrid array of neutral atoms from two different elements, significantly broadening the system’s potential applications in quantum technology. While manmade qubits such as superconducting […]

In a fully-controllable experiment platform for studying non-Markovian open quantum dynamics, researchers have showed that the non-Markovianity could be investigated from the global and local aspects. By mixing random unitary dynamics, they demonstrated non-Markovian and […]

Controllable solid-state spin qubits are currently becoming useful building blocks for applied quantum technologies. A team of researchers has demonstrated that in a specific type of silicon-vacancy in the 6H-SiC polytype the excited-state fine structure […]

The new review paper on magnetic topological materials of Andrei Bernevig, Princeton University, USA, Haim Beidenkopf, Weizmann Institute of Science, Israel, and Claudia Felser, Max Planck Institute for Chemical Physics of Solids, Dresden, Germany, introduces […]

A rare spectroscopy technique performed at Swinburne University of Technology directly quantifies the energy required to bind two excitons together. The experiment harnessed interactions between real and virtual states to ‘switch‘ the electronic state of […]

Physicists at UC Santa Barbara have experimentally observed a quirky behavior of the quantum world: a ‘quantum boomerang‘ effect that occurs when particles in a disordered system are kicked out of their locations. Instead of landing […]

Researchers at Southern University of Science and Technology in China, the Austrian Academy of Sciences and other institutes worldwide have recently adapted Bell tests so that they could be implemented in state-of-the-art photonic systems.  They […]