Authors: George Rajna
A new progress in the scaling of semiconductor quantum dot-based qubits has been achieved by researchers at the University of Science and Technology of China. [38] This has the double benefit of potentially allowing a new method of chip-to-chip communication with silicon, currently only possible with much more expensive materials, but also pushing mobile communications to much higher frequency and allowing the transmission of more data. [37] Based on complementary metal-oxide-semiconductor (COMS) technology—a standard low-cost, high-volume chip manufacturing technique used for most processors and chips today—a group of researchers from IBM Research in Zurich, Switzerland, together with a consortium working under the EU-funded project "ADDAPT," have demonstrated a novel optical receiver (RX) that can achieve an aggregate bandwidth of 160 Gb/s through four optical fibers. [36] An international team of researchers has taken an important step towards solving a difficult variation of this problem, using a statistical approach developed at the University of Freiburg. [35] Storing information in a quantum memory system is a difficult challenge, as the data is usually quickly lost. At TU Wien, ultra-long storage times have now been achieved using tiny diamonds. [34] Electronics could work faster if they could read and write data at terahertz frequency, rather than at a few gigahertz. [33] A team of researchers led by the Department of Energy's Oak Ridge National Laboratory has demonstrated a new method for splitting light beams into their frequency modes. [32] Quantum communication, which ensures absolute data security, is one of the most advanced branches of the "second quantum revolution". [31]
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