quantum technologies tagged posts

Deep Learning for Quantum Sensing

Scheme of the implemented deep learning protocol.
Scheme of the implemented deep learning protocol. A limited number of quantum probe states are fed into the sensor treated as a black box. A grid of measurement results is collected to train a neural network, which learns the posterior probability distribution associated with the single-measurement Bayesian update. Such distribution is used to define the reward of the RL agent that sets the control phases on the black-box device. Image credit: Cimini et al., doi 10.1117/1.AP.5.1.016005

Quantum sensing represents one of the most promising applications of quantum technologies, with the aim of using quantum resources to improve measurement sensitivity...

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Complex Shapes of Photons to Boost future Quantum Technologies

Conceptual image of complex shapes of photons
Conceptual image of the used method for manipulating the spatial structures of photons using multiple consecutive lossless modulations. Image: Markus Hiekkamäki / Tampere University

Researchers have demonstrated how two interfering photons can bunch into various shapes. These complex shapes are beneficial for quantum technologies, such as performing fast photonic quantum computations and safe data transfer. The method opens new possibilities also for creating enhanced measurement and sensing techniques.

As the digital revolution has now become mainstream, quantum computing and quantum communication are rising in the consciousness of the field...

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Physicists find Signs of a Time Crystal

Yale physicists looked for a signature of a discrete time crystal within a crystal of monoammonium phosphate. Credit: Michael Marsland/Yale University

Yale physicists looked for a signature of a discrete time crystal within a crystal of monoammonium phosphate. Credit: Michael Marsland/Yale University

Yale physicists have uncovered hints of a time crystal – a form of matter that “ticks” when exposed to an electromagnetic pulse – in the last place they expected: a crystal you might find in a child’s toy. The discovery means there are now new puzzles to solve, in terms of how time crystals form in the first place. Ordinary crystals such as salt or quartz are examples of 3D, ordered spatial crystals. Their atoms are arranged in a repeating system, something scientists have known for a century. Time crystals, first identified in 2016, are different...

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