Post-Selection Free Generation of Multi-Photon Added Coherent States

• URL: http://arxiv.org/abs/2606.03167v1
• Date: Tue, 02 Jun 2026 05:25:59 GMT
• Title: Post-Selection Free Generation of Multi-Photon Added Coherent States
• Abstract summary: We propose a protocol for the post-selection free generation of high fidelity multi-photon added coherent states.<n>Our results unlock a deterministic route to complex non-classical states using well-established quantum optical platforms.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Non-Gaussian quantum states are essential resources for continuous-variable quantum information processing and for metrology. Among these, multi-photon added coherent states bridge classical and non-classical behaviors; however, their generation typically relies on small photon numbers and probabilistic heralding schemes. Here, we propose a protocol for the post-selection free generation of high fidelity multi-photon added coherent states using the photon blockade effect in a driven Kerr nonlinear resonator, where such states emerge naturally during the dynamics. We demonstrate that high-fidelity states can be prepared by optimizing the external drive power and the interaction time. Furthermore, we show that the protocol is robust under realistic experimental conditions, achieving fidelities of $\approx 99\%$ with current state-of-the-art parameters. Our results unlock a deterministic route to complex non-classical states using well-established quantum optical platforms.

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