AI Article Synopsis
- Strong nonlinear interactions are crucial for quantum technologies involving bosonic oscillator modes, but typical electromagnetic and mechanical nonlinearities are too weak for single-quantum effects to be noticed.
- This limitation has been addressed by linking electromagnetic resonators with highly nonlinear quantum systems like atoms and superconducting qubits.
- The research introduces a solid-state mechanical system that achieves a single-phonon nonlinear regime, surpassing decoherence rates, enabling its use as a mechanical qubit for various quantum operations, paving the way for advancements in quantum simulations, sensing, and information processing.
Article Abstract
Although strong nonlinear interactions between quantized excitations are an important resource for quantum technologies based on bosonic oscillator modes, most electromagnetic and mechanical nonlinearities are far too weak to allow for nonlinear effects to be observed at the single-quantum level. This limitation has been overcome in electromagnetic resonators by coupling them to other strongly nonlinear quantum systems such as atoms and superconducting qubits. We demonstrate the realization of the single-phonon nonlinear regime in a solid-state mechanical system. The single-phonon anharmonicity in our system exceeds the decoherence rate by a factor of 6.8, allowing us to use it as a mechanical qubit and demonstrate initialization, readout, and single-qubit gates. Our approach provides a powerful quantum acoustics platform for quantum simulations, sensing, and information processing.
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| http://dx.doi.org/10.1126/science.adr2464 | DOI Listing |
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