Silicon photonic processor of two-qubit entangling quantum logic
arXiv:1709.00214 · doi:10.1088/2040-8986/aa8d56
Abstract
Entanglement is a fundamental property of quantum mechanics, and is a primary resource in quantum information systems. Its manipulation remains a central challenge in the development of quantum technology. In this work, we demonstrate a device which can generate, manipulate, and analyse two-qubit entangled states, using miniature and mass-manufacturable silicon photonics. By combining four photon-pair sources with a reconfigurable six-mode interferometer, embedding a switchable entangling gate, we generate two-qubit entangled states, manipulate their entanglement, and analyse them, all in the same silicon chip. Using quantum state tomography, we show how our source can produce a range of entangled and separable states, and how our switchable controlled-Z gate operates on them, entangling them or making them separable depending on its configuration.
The data from this study are available from the open data repository Figshare at https://doi.org/10.6084/m9.figshare.5464381.v1
References in corpus (16)
- Photonic quantum technologies
- All-optical signal processing platforms for CMOS compatible integrated nonlinear optics
- Silica-on-Silicon Waveguide Quantum Circuits
- Efficient, Compact and Low Loss Thermo-Optic Phase Shifter in Silicon
- Silicon Quantum Photonics
- On-Chip Detection of Entangled Photons by Scalable Integration of Single-Photon Detectors
- Polarization entangled state measurement on a chip
- Experimental Scattershot Boson Sampling
- Ultra-low power generation of twin photons in a compact silicon ring resonator
- Quantum teleportation on a photonic chip
- Quantum photonics at telecom wavelengths based on lithium niobate waveguides
- A monolithically integrated polarization entangled photon pair source on a silicon chip
- 60dB high-extinction auto-configured Mach--Zehnder interferometer
- An integrated source of spectrally filtered correlated photons for large scale quantum photonic systems
- On-chip generation and demultiplexing of quantum correlated photons using a silicon-silica monolithic photonic integration platform
- Towards Quantum Supremacy with Lossy Scattershot Boson Sampling