Integrated squeezed light sources for two-mode entanglement in thin-film lithium niobate
- URL: http://arxiv.org/abs/2605.26583v1
- Date: Tue, 26 May 2026 06:03:55 GMT
- Title: Integrated squeezed light sources for two-mode entanglement in thin-film lithium niobate
- Abstract summary: Multiple indistinguishable squeezed light sources on a single chip is an essential step toward continuous-variable quantum computing.<n>We demonstrate the fabrication of two indistinguishable and independently controllable optical parametrics on a thin-film lithium niobate platform.<n>This is the first demonstration of two independently tunable squeezed-light sources on a single TFLN chip and their use for generating continuous-variable entanglement.
- Score: 30.64838603478755
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Scalable generation of nonclassical light sources on an integrated platform is a key requirement for photonic quantum information processing. In particular, realizing multiple indistinguishable squeezed light sources on a single chip is an essential step toward continuous-variable quantum computing. Here, we demonstrate the fabrication of two indistinguishable and independently controllable optical parametric oscillators on a thin-film lithium niobate (TFLN) platform. The device design focuses on reproducibility, independent tunability, and compatibility with larger telecom-wavelength continuous-variable photonic circuits. We observe up to 0.5 dB of directly measured squeezing below the shot-noise level from each source. By interfering the two modes on a beam splitter, we generate an EPR-type two-mode squeezed state and verify continuous-variable entanglement through violation of the Duan-Simon inseparability criterion. This is the first demonstration of two independently tunable squeezed-light sources on a single TFLN chip and their use for generating continuous-variable entanglement.
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