Harvard Researchers Triple Qubit Coherence With Sound Waves, Opening Path to Chip-Scale Quantum Networks
Updated
Updated · ScienceDaily · Sep 12
Harvard Researchers Triple Qubit Coherence With Sound Waves, Opening Path to Chip-Scale Quantum Networks
2 articles · Updated · ScienceDaily · Sep 12
Summary
Harvard researchers extended a diamond-based qubit’s coherence time by about 3x by continuously surrounding it with microscopic sound waves instead of standard microwave protection.
The phonon-driven method creates a “dressed” qubit that is less vulnerable to low-frequency environmental noise, addressing a key weakness of qubits placed inside phononic cavities.
Those cavities trap mechanical vibrations so they interact strongly with electron spins, but that same setup has made long-lived quantum memory difficult to achieve with conventional decoupling techniques.
phonons could eventually do double duty—carrying quantum information between nodes and protecting it at the same time—supporting smaller, chip-scale quantum networks and hybrid systems that link different qubit types.