A new path toward sending and receiving information with single photons of light has been discovered by an international team of researchers led by the University of Michigan. …
Tag: single photons
Heat-free optical switch would enable optical quantum computing chips
In a potential boost for quantum computing and communication, a European research collaboration reported a new method of controlling and manipulating single photons without generating heat. The solution makes it possible to integrate optical switches and single-photon detectors in a single chip. …
Devil in the defect detail of quantum emissions unravelled
Systems which can emit a stream of single photons, referred to as quantum light sources, are critical hardware components for emerging technologies such as quantum computing, the quantum internet, and quantum communications. …
An electrical trigger fires single, identical photons
Secure telecommunications networks and rapid information processing make much of modern life possible. To provide more secure, faster, and higher-performance information sharing than is currently possible, scientists and engineers are designing next-generation devices that harness the rules of quantum physics. Those designs rely on single photons to encode and transmit information across quantum networks and between quantum chips. However, tools for…
Solving the mystery of quantum light in thin layers
When a current is applied to a thin layer of tungsten diselenide, it begins to glow in a highly unusual fashion. In addition to ordinary light, which other semiconductor materials can emit, tungsten diselenide also produces a very special type of bright quantum light, which is created only at specific points of the material. It consists of a series of photons…
Demonstrating slow light in rubidium vapor using single photons from a trapped ion
Quantum networks can be practically implemented to interface with different quantum systems. In order to photonically link hybrid systems with combined unique properties of each constituent system, scientists must integrate sources with the same photon emission wavelength. For instance, trapped ions and neutral atoms can both have compelling properties as nodes and memories within quantum networks but without photonic linking due…
Physicists couple key components of quantum technologies
Quantum effects are genuinely found in the world of nanostructures and allow a wide variety of new technological applications. For example, a quantum computer could in the future solve problems, which conventional computers need a lot of time to handle. All over the world, researchers are engaged in intensive work on the individual components of quantum technologies—these include circuits that process…