All articles tagged with #photon emission
Researchers at Stanford University have used advanced microscopy to link the atomic structure of diamonds to the erratic signals from quantum bits embedded within. By examining the grain boundaries in nanodiamonds, they discovered that the internal structure significantly affects photon emission properties, providing new insights for improving quantum communication and sensing technologies.
Researchers have developed a system of atomic processing nodes that can produce, store, and retrieve quantum information, a crucial step towards creating a quantum-based network. This system involves a semiconductor quantum dot emitting single photons and a cloud of hot rubidium atoms serving as quantum memory, with a laser controlling the storage and release of photon states. While still in the prototype stage, this advancement could pave the way for stable quantum networks, addressing previous challenges in linking photon sources and processing nodes.
Researchers at Princeton University have developed a new method for connecting distant quantum devices, a significant advancement for quantum communication networks. The technology uses telecom band light to efficiently transmit signals with minimal losses through optical fiber, overcoming a major obstacle in establishing resilient quantum communication networks. The study, published in Nature, details the innovative approach to constructing quantum repeaters, which involves using erbium ions emitting light at an optimal infrared wavelength. While this achievement represents a crucial milestone, further work is needed to enhance the storage duration of quantum states in the erbium ion’s spin, highlighting the ongoing pursuit of improvement in the dynamic quantum computing landscape.
A Ph.D. candidate at Leiden University has developed a technique for generating photons using quantum dots and microcavities, offering a more controlled approach to creating the elementary building blocks of a future quantum computer or internet. The innovative method opens up potential solutions to challenges in quantum technology, as quantum dots, being a few nanometers in size, exhibit quantum effects similar to atoms.