Researchers at have designed and fabricated the world's smallest electro-optic modulator, which could mean major reductions in energy used by data centers and supercomputers.
Illinois researchers have demonstrated that sound waves can be used to produce ultraminiature optical diodes that are tiny enough to fit onto a computer chip. These devices, called optical isolators, may help solve major data capacity and system size challenges for photonic integrated circuits, the light-based equivalent of electronic circuits, which are used for computing and communications.
A joint China-Austria team has performed quantum key distribution between the quantum-science satellite Micius and multiple ground stations located in Xinglong (near Beijing), Nanshan (near Urumqi), and Graz (near Vienna). Such experiments demonstrate the secure satellite-to-ground exchange of cryptographic keys with ?kHz rate during the passage of the satellite Micius over a ground station. Using Micius as a trusted relay, a secret key is created between China and Europe at locations separated up to 7,600 km on the Earth.
A team of electrical engineers at The University of Texas at Austin, in collaboration with Peking University scientists, has developed the thinnest memory storage device with dense memory capacity, paving the way for faster, smaller and smarter computer chips for everything from consumer electronics to big data to brain-inspired computing.
Data travels through thousands of miles of fiber optic cables underneath the world's oceans--via pulses of light. And according to experts, the data in these cables is at great risk of being intercepted. However, a newly designed frequency comb--recently developed by researchers at the USC Viterbi School of Engineering might be an effective tool for data encryption.
A method of securely communicating between multiple quantum devices has been developed by a UCL-led team of scientists, bringing forward the reality of a large-scale, un- hackable quantum network.
Software-defined networking can make the Internet scalable, manageable, and adaptable at an industry-grade level, according to a recent research study led by scientists from the Madrid research institute IMDEA Networks.
Use your smartphone to check how clean the air is, whether food is fresh or a lump is malignant. This has all come a step closer thanks to a new spectrometer that is so small it can be incorporated easily and cheaply in a mobile phone. The little sensor developed at TU Eindhoven is just as precise as the normal tabletop models used in scientific labs. The researchers present their invention in Nature Communications.
In today's 'internet of things,' devices connect primarily over short ranges at high speeds, an environment in which surface acoustic wave devices have shown promise for years. To obtain faster speeds, however, SAW devices need to operate at higher frequencies, limiting output power and overall performance. Researchers have demonstrated a new device that can achieve frequencies six times higher than most current devices. Their results are published this week in Applied Physics Letters.
Researchers at Universidad Carlos III de Madrid (UC3M) and the Consejo Superior de Investigaciones Científicas-CSIC (Spanish National Research Council) are developing a tool that enables cell phones to be analyzed in order to determine if they could undergo a cyber-attack to obtain encryption keys through their electromagnetic emanations.