All articles tagged with #superradiance
Physicists have found a way to harness superradiance, a quantum phenomenon that usually causes instability, to generate powerful, long-lasting microwave signals, opening new possibilities for advancements in medicine, navigation, and quantum communication.
Researchers propose a practical method to detect the Unruh effect, which predicts that an accelerating object perceives empty space as warm, by using synchronized atomic emissions and high-quality mirrors to amplify and time the faint signals, making this elusive quantum phenomenon observable in laboratory conditions.
Researchers have proposed a practical method to detect the elusive Unruh effect by using atoms between mirrors to produce a measurable, early flash of light, turning a faint quantum 'glow' into a clear signal, potentially enabling laboratory studies of gravity-related quantum phenomena.
Physicists have proposed a new type of laser that operates without mirrors, using synchronized quantum emitters to produce a narrow, directional light beam, potentially revolutionizing ultra-compact light sources for nanophotonics and quantum sensing.
MIT physicists propose a novel concept for a neutrino laser that could be created by cooling radioactive atoms to a quantum state, potentially enabling faster neutrino production and new applications in communication and medical imaging.
Researchers led by Dominik Schneble have discovered new collective behaviors in quantum optics using matter waves, revealing novel cooperative radiative phenomena in synthetic atom arrays. Their work, published in Nature Physics, explores super- and subradiant dynamics by manipulating ultracold atoms in an optical lattice, offering insights into quantum information science. This study challenges traditional assumptions about photon behavior in quantum systems, demonstrating unprecedented control over subradiant states and highlighting the potential of ultracold matter waves in quantum optics research.
Physicists have discovered a method to create highly entangled spin-squeezed states in multilevel atoms by harnessing superradiance inside an optical cavity, leading to the generation of dark states that are immune to superradiance and emit light at a much slower pace. This breakthrough could significantly enhance the precision of atomic clocks and quantum metrology, offering opportunities for quantum-enhanced measurements and potential applications in noise reduction.
Astrophysicists propose two potential methods for harnessing energy from black holes in the distant future: charging primordial black holes by feeding them electrically charged particles until they repel them, and collecting energy through superradiance; and retrieving energy stored in the form of particle pairs that form in the presence of an electric field around black holes. The researchers estimate a potential recharging efficiency of approximately 25%.
Scientists propose two methods for harnessing the energy of black holes. The first method involves "charging" the black hole by injecting it with electrically charged particles until it repels additional charges, effectively becoming "fully charged." The second method involves extracting energy in the form of paired particles that form spontaneously in the presence of an electric field. Theoretical calculations suggest that black hole batteries could have an efficiency 250 times higher than that of an atomic bomb. These proposals provide insights into the intersection of quantum mechanics and gravity.