Quantum technology for clocks, sensors, and information processing

Bongs, Kai

Nils Hempler, Graeme P. A. Malcolm

Abstract Many of the new generation of quantum technologies rely on the precise control of light. Quantum information is carried by photons, and lasers are used to manipulate matter in quantum computers, sensors, cameras, clocks and cryptography. This has become possible through the ability to generate and work with very pure light, with precise frequencies and low phase noise, thanks to advanced laser systems. The field is now being driven in two directions – towards higher power with low noise to enable full‐scale quantum computers, and towards miniature, low cost systems for commercial clocks and sensors.

Adam Reed

Mechanical systems that combine motion and electricity are often used to process information. They are employed as compact clocks, filters, and sensors in almost all modern electronic devices. Yet these devices are limited to processing classical information. To exploit mechanical systems in emerging quantum communication and computation technologies, such systems must process fragile quantum bits of information. In this thesis, I experimentally demonstrate the conversion of quantum bits encoded in electrical signals to the motion of a micron-scale mechanical resonator. This capability is crucial for harnessing mechanical systems as memories for quantum signals, or as converters of information between electronic quantum processors and telecommunications light. Beyond quantum information processing, this work opens up the possibility to test quantum theory in objects of an unprecedented mass scale.

Daniel Thrasher

V. M. Kychak, Maksym Huz, V. I. Makohon +1 more

The current state of development of electronic technology and the rapid development of wireless information transmission systems requires the search for new technologies that would meet the requirements of increasing the frequency of signal transmission. The idea of the idea of generators operation of clock pulse generators as devices of digital information processing is revealed in the work, in particular the physical model of the clock pulse generator on the basis of Josephson transitions is constructed. The scheme of the clock generator is given and its description is made. The linearization of the two-contact superconducting quantum interference sensors (SQIS) voltage response function is described with the representation of the solution of the differential equation as a function of the voltage response versus time. Based on the proposed solution of the differential equation, the dependence of the change in the phase difference of the wave functions on the parameters of the equivalent PD scheme is investigated, the research results are presented in the form of graphs.

Spin Qubits, Kavan Kishore Modi