Photonic Qubit Gates via 1D Scattering from an Array of Two-Level Emitters

• URL: http://arxiv.org/abs/2504.14581v1
• Date: Sun, 20 Apr 2025 12:07:12 GMT
• Title: Photonic Qubit Gates via 1D Scattering from an Array of Two-Level Emitters
• Authors: Evangelos Varvelis, Joachim Ankerhold,
• Abstract summary: Photonic quantum computing offers a promising platform for quantum information processing.<n>This paper presents a scheme for implementing a deterministic phase gate for dual-rail number encoded photonic qubits.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Photonic quantum computing offers a promising platform for quantum information processing, benefiting from the long coherence times of photons and their ease of manipulation. This paper presents a scheme for implementing a deterministic phase gate for dual-rail number encoded photonic qubits, leveraging a standard 1D waveguide coupled to an array of two-level emitters (TLE). Using a transfer matrix approach, we develop a protocol for deterministic phase gate operation, demonstrating its robustness against non-waveguide mode coupling and disorder. Finally, we relax the idealized assumption of monochromatic light, considering finite-bandwidth pulses. Despite these realistic considerations, our results indicate high fidelity for the proposed phase gate protocol. Finally we will discuss two qubit operations.

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