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A protocol and theoretical framework for deterministic Fock state generation and SWAP operations in bosonic quantum computing using a Rabi-driven qubit to bridge the gap between high cavity isolation and strong interaction requirements.
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This project represents a sophisticated advancement in bosonic quantum computing, a field gaining massive traction as a path toward error-corrected quantum hardware. The core innovation—using a Rabi-driven qubit to induce strong interactions only when needed while maintaining weak coupling for isolation—solves a fundamental hardware trade-off. While the GitHub metrics (0 stars, 3 forks) reflect its early academic stage, the forks suggest peer review or internal research interest. Defensibility is high (7) because this is not a 'commodity' algorithm; it requires deep domain expertise in superconducting circuit design and quantum control theory. It competes directly with protocols like SNAP (Selective Number-dependent Arbitrary Phase) gates and GRAPE (Gradient Ascent Pulse Engineering). Frontier labs like OpenAI or Anthropic have zero presence here; however, the 'platform risk' is medium because AWS (via their bosonic qubit research) and specialized startups like Alice & Bob or Nord Quantique are the primary candidates to either implement or supersede this specific control protocol. The displacement horizon is long (3+ years) because quantum hardware iteration cycles are measured in years, not months.
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The reusable building blocks distilled from this project — each a mechanism you could lift into your own.
QubitState, BosonicMode<Vacuum> -> QubitState, BosonicMode<FockState>
Drive a two-level qubit with a Rabi frequency tuned to match the dispersive shift of a coupled resonator mode to analytically transfer excitations into target Fock states.
BosonicMode<A>, BosonicMode<B>, QubitState -> BosonicMode<B>, BosonicMode<A>, QubitState
Match a qubit's Rabi drive frequency to the energy difference of two weakly dispersively coupled cavity modes to execute an analytical SWAP gate between them without using higher transmon states.