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GaN laser diodes have the potential to be a key enabler for many quantum technologies, including quantum sensing, optical atomic clocks and ion-trap & neutral atom quantum computing, since the AlGaInN material system allows for laser diodes to be fabricated over a wide range of wavelengths from ultra-violet to visible, allowing the development of very high specification laser diode sources that are portable, robust and provide practical solutions that are otherwise unobtainable using more conventional laser sources.
We report our latest results on a range of AlGaInN diode-lasers targeted to meet optical atomic clock and quantum gravity sensor applications. This includes the [5s2S1/2-5p2P1/2] cooling transition in strontium+ ion optical clocks at 422 nm, the [5s21S0-5p1P1] cooling transition in neutral strontium clocks at 461 nm and the [5s2s1/2 – 6p2P3/2] transition in rubidium at 420 nm.
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Quantum Information Science, Sensing, and Computation
Quantum noise is a key obstacle in the growth of modern quantum computers. While it can lead to erroneous outputs in quantum computations, it can also be used as a tool for applications such as fuzzing. Fuzzing is a technique that uses numerous randomized input values to test the software for security flaws and bugs, automating the bug and vulnerability search process. This paper discusses the potential uses of quantum fuzzing for defense applications and how quantum computing random number generation capabilities may enhance existing fuzzing techniques. A discussion of the techniques’ utility for quantum computing applications is also included.
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A significant variety of photonic devices is required for the implementation of quantum sensors, computers and communication networks. This presentation will describe the current state-of-the-art and future possibilities for key photonic devices that enable quantum technologies, such as photon sources, photon detectors, optical amplifiers, electro-optic modulators and paths towards the integration of these devices into compact, highly functional components. Specific requirements on these devices that come from quantum technology demands will be explored and technology solution approaches will be described. We will include examples of devices being developed at Freedom Photonics as well as in other leading quantum technology organizations.
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