Waveguided sources of consistent, single-temporal-mode squeezed light: the good, the bad, and the ugly

Abstract

We study theoretically how the brightness of pumps, with fixed profiles, affects the temporal mode structure of squeezed states generated by fixed parametric waveguided sources. We find that the temporal modes of these squeezed states can be partially mismatched and thus distinguishable, which is undesirable when using these states as resources for quantum computing or heralded state generation. By studying common frequency filtering techniques used experimentally, we find that although one can regain indistinguishability it comes at the price of potentially greatly reducing the purity of the state. We consider three different source configurations: unapodized single pass, apodized single pass, and apodized double pass. We find that the double pass configuration produces optimal results with almost perfectly indistinguishable states over varying degrees of brightness.

13 pages, 8 figures, 3 pages appendix

References in corpus (14)

• Quantum computational advantage using photons
• Quantum circuits with many photons on a programmable nanophotonic chip
• Boson sampling with 20 input photons in 60-mode interferometers at $10^{14}$ state spaces
• Phase-Programmable Gaussian Boson Sampling Using Stimulated Squeezed Light
• Probing multimode squeezing with correlation functions
• A bright, pulsed two-mode squeezer
• Quantum entanglement of a large number of photons
• Effects of time ordering in quantum nonlinear optics
• The Boundary for Quantum Advantage in Gaussian Boson Sampling
• Experimental Gaussian Boson Sampling
• Beyond photon pairs: Nonlinear quantum photonics in the high-gain regime
• Spectrally separable photon-pair generation in dispersion engineered thin-film lithium niobate
• Time ordering effects in the generation of entangled photons using nonlinear optical processes
• Distinguishability in quantum interference with the squeezed states

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• Photon pair generation via down-conversion in III-V semiconductor microrings: modal dispersion and quasi-phase matching
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• Ultrashort-pulse-pumped, single-mode type-0 squeezers in lithium niobate nanophotonics
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• Estimation of photon number distribution and derivative characteristics of photon-pair sources
• Bipartite entanglement extracted from multimode squeezed light generated in lossy waveguides