An investigation of the changing behaviour of a single quantum bit through time has uncovered a tantalising similarity to the geometry of three-dimensional space
Category: quantum physics – Page 14
An impossible quantum structure has now been fabricated, potentially leading the way to new developments in quantum computing.
Researchers have successfully demonstrated the UK’s first long-distance ultra-secure transfer of data over a quantum communications network, including the UK’s first long-distance quantum-secured video call.
The team, from the Universities of Bristol and Cambridge, created the network, which uses standard fiber-optic infrastructure, but relies on a variety of quantum phenomena to enable ultra-secure data transfer.
The network uses two types of quantum key distribution (QKD) schemes: “unhackable” encryption keys hidden inside particles of light; and distributed entanglement: a phenomenon that causes quantum particles to be intrinsically linked.
A new theory links gravity to quantum entropy and introduces the G-field, possibly explaining dark matter and cosmic expansion. In a recent study published in Physical Review D, Professor Ginestra Bianconi, a Professor of Applied Mathematics at Queen Mary University of London, presents a groundbr
Dr. Richard Lieu, a physics professor at The University of Alabama in Huntsville (UAH), a part of The University of Alabama System, has published a paper in the journal Classical and Quantum Gravity that proposes a universe built on steps of multiple singularities rather than the Big Bang alone to account for the expansion of the cosmos.
The new model forgoes the need for either dark matter or dark energy as explanations for the universe’s acceleration and how structures like galaxies are generated.
The researcher’s work builds on an earlier model hypothesizing that gravity can exist without mass.
Scientists claim to find ‘first observational evidence supporting string theory,’ which could finally reveal the nature of dark energy
Posted in cosmology, quantum physics | Leave a Comment on Scientists claim to find ‘first observational evidence supporting string theory,’ which could finally reveal the nature of dark energy
Physicists have proposed a new model of space-time that may provide the ‘first observational evidence supporting string theory,’ a new preprint suggests.
What if your mind is shaping the world around you in ways you can’t see… or even imagine?
Evolving cosmological constant.
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The Standard Model of Cosmology has reigned supreme for decades, confirmed over and over again. But chinks in the armour have been developing, such as the Hubble Tension. Now, however, a new result threatens to completely upend our view of the Universe — we no longer even know how it will end.
Written & presented by Prof. David Kipping.
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What do smart bandages, ocean-powered sensors, and quantum biology have in common? They’re all part of Dr. Leonard Tender’s work at DARPA. On the latest episode of Voices from DARPA, he discusses his fascinating research in the Biological Technologies Office and how these innovations are shaping the future of national security.
Quantum systems are known to be prone to dissipation, a process that entails the irreversible loss of energy and that is typically linked to decoherence. Decoherence, or the loss of coherence, occurs when interactions between a quantum system and its environment cause a loss of coherence, which is ultimately what allows quantum systems to exist in a superposition of states.
While dissipation is generally viewed as a source of decoherence in quantum systems, researchers at Tsinghua University recently showed that it could also be leveraged to study strongly correlated quantum matter.
Their paper, published in Nature Physics, introduces a new method to probe intrinsic quantum many-body correlations and demonstrates its potential for studying the dissipative dynamics in strongly correlated one-dimensional (1D) quantum gases.