Optical synthesis of large-amplitude squeezed coherent-state superpositions with minimal resources

Abstract

We propose and experimentally realize a novel versatile protocol that allows the quantum state engineering of heralded optical coherent-state superpositions. This scheme relies on a two-mode squeezed state, linear mixing and a $n$-photon detection. It is optimally using expensive non-Gaussian resources to build up only the key non-Gaussian part of the targeted state. In the experimental case of a two-photon detection based on high-efficiency superconducting nanowire single-photon detectors, the freely propagating state exhibits a 67% fidelity with a squeezed even coherent-state superposition with a size $|\alpha {|}^2$=3. The demonstrated procedure and the achieved rate will facilitate the use of such superpositions in subsequent protocols, including fundamental tests and optical hybrid quantum information implementations.

References in corpus (12)

• Generation of a superposition of odd photon number states for quantum information networks
• Fault-tolerant linear optical quantum computing with small-amplitude coherent states
• Generation of Optical Coherent State Superpositions by Number-Resolved Photon Subtraction from Squeezed Vacuum
• Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction
• Generating superposition of up-to three photons for continuous variable quantum information processing
• Witnessing trustworthy single-photon entanglement with local homodyne measurements
• A high-fidelity single-photon source based on a type-II optical parametric oscillator
• Microcontroller-based locking in optics experiments
• Generation of hybrid entanglement between a single-photon polarization qubit and a coherent state
• Effect of the heralding detector properties on the conditional generation of single-photon states
• Quantum state engineering of light with continuous-wave optical parametric oscillators
• Witnessing single-photon entanglement with local homodyne measurements: analytical bounds and robustness to losses

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