All articles tagged with #phonons
Caltech scientists have developed an AI-based method that significantly accelerates calculations of quantum interactions among atomic vibrations (phonons) in materials, enabling 1,000 to 10,000 times faster analysis while maintaining accuracy, which could revolutionize the understanding of material properties and high-throughput screening.
Researchers at Rice University have demonstrated a record-breaking quantum interference effect between phonons in a 2D metal-silicon carbide system, opening new possibilities for phonon-based technologies such as high-sensitivity sensors and quantum devices.
Scientists at the Niels Bohr Institute have developed an ultra-thin membrane with tiny holes that allows sound vibrations (phonons) to travel with almost no energy loss, potentially revolutionizing sound and information transfer in quantum computing and sensors.
Researchers have successfully created a strong coupling between magnons and phonons in a thin film at room temperature, using shear sound waves to link ultrasound and magnetic waves. This breakthrough could lead to the development of hybrid wave-based devices for information processing with minimal losses, potentially opening the door for exciting progress in information and communication technologies. The key element enabling this work was a nano-structured surface acoustic wave resonator, which enhanced shear sound waves and allowed for a strong coupling between surface sound waves and magnets in the resonator.
Researchers at Nanjing University and the Chinese Academy of Sciences have discovered giant phonon magnetic moments enhanced by spin fluctuations in Fe2Mo3O8, a polar antiferromagnet. By using magneto-Raman spectroscopy and inelastic neutron scattering, they uncovered the phononic nature of low-lying excitations in Fe2Mo3O8 and detected a sixfold enhancement of the phonon magnetic moment. This finding could lead to new insights into the interplay between magnetism and phonons and pave the way for potential applications in phononic control of magnetic dynamics and spin information devices.
Researchers at the California Institute of Technology have developed a method to store quantum information by translating electrical quantum states into sound waves using phonons. This innovative technique avoids energy loss and allows for longer storage durations, representing a significant advancement in the field of quantum computing. The method utilizes a tiny device consisting of flexible plates that vibrate at high frequencies, enabling the interaction between electrical signals carrying quantum information. The research team's approach is compatible with established quantum devices based on microwaves and offers a solution for effective storage of quantum information from electrical circuits.
Researchers at the University of Chicago are exploring the quantum properties of sound waves, known as phonons, by using acoustic mirrors and beam splitters. They have demonstrated that phonons can exhibit superposition and entanglement, similar to photons. This research could pave the way for the development of a new type of quantum computer called a mechanical quantum computer, which would be compact and self-contained, potentially integrating with electronic quantum computers in the future.
Mohammad Mirhosseini, assistant professor of electrical engineering and applied physics, has developed a new method for efficiently translating electrical quantum states into sound and vice versa, which may allow for storing quantum information prepared by future quantum computers. This method uses phonons, the sound equivalent of a photon, for storing quantum information because it's relatively easy to build small devices that can store these mechanical waves. The new method is independent of the properties of specific materials, making it compatible with established quantum devices, which are based on microwaves.
Researchers at the University of Washington have discovered atomic “breathing” or mechanical vibration between atom layers, which could help encode and transmit quantum information. They also created an integrated device that manipulates these atomic vibrations and light emissions, advancing quantum technology development. The researchers plan to build a waveguide and scale up the system to control multiple emitters and their associated phonon states, enabling the quantum emitters to “talk” to each other, a step toward building a solid base for quantum circuitry.
Scientists have successfully placed a phonon, a particle of sound, into superposition, allowing it to exist in two places at once. This achievement paves the way for the use of phonons in quantum computers, which rely on the principles of quantum physics to perform calculations. This feat is similar to what has been observed in electrons and photons, which are quanta of matter and light, respectively.
Researchers at the University of Chicago have successfully demonstrated the quantum properties of phonons, quantum particles that transmit sound, by "splitting" them into a quantum superposition and creating interference between two phonons. This breakthrough could lead to the development of a new type of quantum computer, a linear mechanical quantum computer, which could perform unique calculations. The team's experiments are the first of their kind and could pave the way for further advances in computing.
Scientists have successfully split phonons, which are packets of energy for sound waves, paving the way for a new type of quantum computer called linear mechanical quantum computers. Phonons have proven challenging to study due to their susceptibility to noise and issues with scalability and detection. This breakthrough study could help overcome these challenges and advance quantum computing research.
Researchers have settled the debate on whether phonons can be chiral, a fundamental concept in physics. Phonons are quasiparticles that describe the collective vibrational excitations of atoms in a crystal lattice. Using circular X-ray light, researchers at Paul Scherrer Institute PSI showed that phonons can twist like a corkscrew through quartz, demonstrating chirality. This discovery could have important implications for the fundamental physical properties of materials, particularly in the field of topological materials.
Researchers at the Pritzker School of Molecular Engineering have demonstrated the quantum properties of phonons by using an acoustic beamsplitter to "split" phonons and create interference between two phonons. This is a critical step towards creating a new kind of quantum computer that uses phonons instead of photons. The team's success in creating a two-phonon interference experiment confirms that phonons are equivalent to photons and that the technology exists to build a linear mechanical quantum computer. The next step is to create a logic gate using phonons.
Researchers at the University of Washington have discovered that they can detect atomic "breathing" by observing the type of light emitted by atoms when stimulated by a laser. This atomic "breath" could help encode and transmit quantum information. The team also developed a device that could serve as a new type of building block for quantum technologies. The device involves only a small number of atoms and can control multiple emitters and their associated phonon states, enabling quantum emitters to "talk" to each other, a step toward building a solid base for quantum circuitry.