Today, we are still in the early stages of quantum computing so it’s hard to believe we may someday need to make these kinds of choices: which type of qubit (quantum bit) is right for which job?
Many applications require quantum processors with millions of quantum bits. Today’s prototypes merely come up with a few of these compute units. At some point, the number of signal lines becomes a bottleneck. The lines take up too much space compared to the size of the tiny qubits. And a quantum chip cannot have millions of inputs and outputs.
Microsoft’s Azure Quantum program has developed devices that can create quantum properties which scientists have imagined for nearly a century but have not been able to unambiguously produce in the real world — until now.
The sixth part of an eight part-series by Mr. Russ Fein, founder of The Quantum Leap. In this work Russ provides a high-level overview of various types of qubits. The Quantum Leap is an up-and-coming blog journaling the race to quantum supremacy. Read the series here at The Qubit Report or find the complete series and more at, Quantumtech.blog. Because Quantum is Coming. Qubit
This past September, the U.S. National Science Foundation awarded substantial sums to a number of universities. The funding is to go toward advancing quantum information science. One university, the University of Delaware, received funds to that end.
Research team from the Technical University of Denmark achieves multi-fold increase in quantum encryption key bitrates.
The Australian research team at the U. of Melbourne has simulated a 60-qubit quantum computer. Estimations for the algorithm given it to process would require
With improvements in both superconducting and semiconductor quantum chips, simulating a 50-qubit system using classical computers takes in the region of 16 petabytes of RAM. Chinese researchers have managed to simulate a 64-qubit system with greatly reduced hardware requirements. With such a reduction, realization of other quantum feats stands to be simulated while the world waits…because quantum is coming.
Physicists at the Swiss Federal Institute of Technology in Zurich, Switzerland, have successfully transferred two qubits via coaxial cable. Using a microwave photon resonator to transmit the qubit state, the quantum state was successfully transmitted to a second qubit through the cable; a distance of about 2 meters. With a transmission success rate of 80 percent, the process was repeatable upwards of 50,000 times per second. The team’s next goal is to enable entanglement swapping – using qubits to transmit and receive. If successful, the technique could open up avenues for larger quantum computers.
The U.S. DOD is providing funding to quantum through Army and Navy research laboratories as Qubit shows (see More $ to VT for QIS on this page). But is this government department taking charge? A reasonable synopsis and a quick read of U.S. Government quantum efforts.
