Researchers at the University of Chicago have pioneered experiments exploring the quantum properties of phonons, the quantum particles responsible for sound transmission. Their work suggests that phonons can be manipulated similarly to photons, paving the way for the development of linear mechanical quantum computers (LMQC). Using an acoustic beamsplitter, the team demonstrated the ability to split phonons into a quantum superposition, showcasing their unique computational potential. Despite quantum physics asserting that particles like phonons are indivisible, the researchers found that upon sending a single phonon into the beamsplitter, it entered a superposition state, revealing the fascinating behaviors of quantum mechanics even at larger scales.
In a landmark experiment, the team verified a crucial quantum interference phenomenon known as the Hong-Ou-Mandel effect within phonons, where two phonons interact in a way that results in them traveling together. This validation highlights phonons’ functionality akin to photons, confirming their viability in quantum computing. The UChicago platform aims to integrate phonons with qubits, potentially creating hybrid quantum computers that capitalize on both phononal and qubit-based strengths. The next goal involves designing a logic gate using phonons, forging ahead in the revolutionary realm of quantum computation.
