Long-distance distribution of telecom time-energy entanglement generated on a silicon chip
- URL: http://arxiv.org/abs/2407.21305v1
- Date: Wed, 31 Jul 2024 03:12:09 GMT
- Title: Long-distance distribution of telecom time-energy entanglement generated on a silicon chip
- Authors: Yuan-yuan Zhao, Fuyong Yue, Feng Gao, Qibing Wang, Chao Li, Zichen Liu, Lei Wang, Zhixue He,
- Abstract summary: We create time-energy entanglement for photon pairs generated from an on-chip silicon ring resonator via SFWM process.
Our work paves the way for future large-scale quantum networks with connect of distant quantum nodes.
- Score: 10.477129627938654
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Entanglement distribution is a critical technique that enables numerous quantum applications. Most fiber-based long-distance experiments reported to date have utilized photon pair sources generated in bulk optical crystals, with the entanglement encoded in the polarization degree of freedom. Here, we create time-energy entanglement for photon pairs generated from an on-chip silicon ring resonator via SFWM process and report the distribution of the entanglement over standard optical fiber with distance >81 km. Our work paves the way for future large-scale quantum networks with connect of distant quantum nodes.
Related papers
- QUICK$^3$ -- Design of a satellite-based quantum light source for
quantum communication and extended physical theory tests in space [73.86330563258117]
Single photon source can enhance secure data rates in satellite-based quantum key distribution scenarios.
payload is being integrated into a 3U CubeSat and scheduled for launch in 2024 into low Earth orbit.
arXiv Detail & Related papers (2023-01-26T15:34:11Z) - Quantum Key Distribution using Deterministic Single-Photon Sources over
a Field-Installed Fibre Link [2.1033685912119466]
We realize a quantum key distribution field trial using true single photons across an 18-km-long dark fibre, located in the Copenhagen metropolitan area.
A secret key generation rate of >2 kbits/s realized over a 9.6 dB channel loss is achieved with a polarization-encoded BB84 scheme.
arXiv Detail & Related papers (2023-01-23T12:43:23Z) - Simultaneous transmission of hyper-entanglement in 3 degrees of freedom
through a multicore fiber [0.0]
Entanglement distribution is at the heart of most quantum communication protocols.
Inevitable loss of photons along quantum channels is a major obstacle for distributing entangled photons over long distances.
Spontaneous parametric down-conversion creates photons entangled in multiple high-dimensional degrees of freedom simultaneously.
arXiv Detail & Related papers (2022-08-23T07:20:40Z) - Coherent light scattering from a telecom C-band quantum dot [0.0]
Coherent quantum light generation at telecom wavelengths is fundamental for fibre-based network implementations.
We show that even the inelastically scattered photons have coherence times within the error bars of the Fourier limit.
arXiv Detail & Related papers (2022-05-16T21:32:12Z) - Telecom-band Hyperentangled Photon Pairs from a Fiber-based Source [49.06242674127539]
We experimentally demonstrate the generation of telecom-band biphotons hyperentangled in both the polarization and frequency DoFs.
The states produced by our hyperentanglement source can enable protocols such as dense coding and high-dimensional quantum key distribution.
arXiv Detail & Related papers (2021-12-06T21:37:43Z) - Spectral multiplexing of telecom emitters with stable transition
frequency [68.8204255655161]
coherent emitters can be entangled over large distances using photonic channels.
We observe around 100 individual erbium emitters using a Fabry-Perot resonator with an embedded 19 micrometer thin crystalline membrane.
Our results constitute an important step towards frequency-multiplexed quantum-network nodes operating directly at a telecommunication wavelength.
arXiv Detail & Related papers (2021-10-18T15:39:07Z) - Group-velocity symmetry in photonic crystal fibre for ultra-tunable
quantum frequency conversion [0.0]
We show that a single photonic crystal fibre can achieve frequency conversion by Bragg-scattering four-wave mixing of source photons from an ultra-broad wavelength range.
This enables a single highly adaptable frequency conversion interface to link disparate nodes in a quantum network via the telecoms band.
arXiv Detail & Related papers (2021-03-08T15:28:08Z) - Telecom-heralded entanglement between remote multimode solid-state
quantum memories [55.41644538483948]
Future quantum networks will enable the distribution of entanglement between distant locations and allow applications in quantum communication, quantum sensing and distributed quantum computation.
Here we report the demonstration of heralded entanglement between two spatially separated quantum nodes, where the entanglement is stored in multimode solid-state quantum memories.
We also show that the generated entanglement is robust against loss in the heralding path, and demonstrate temporally multiplexed operation, with 62 temporal modes.
arXiv Detail & Related papers (2021-01-13T14:31:54Z) - Entangled Photon-Pair Sources based on three-wave mixing in bulk
crystals [61.84816391246232]
Entangled photon-pairs are a critical resource in quantum communication protocols ranging from quantum key distribution to teleportation.
The increased prominence of quantum networks has led to growing interest in deployable high performance entangled photon-pair sources.
This manuscript provides a review of the state-of-the-art for bulk-optics-based SPDC sources with continuous wave pump.
arXiv Detail & Related papers (2020-07-30T10:35:06Z) - Stable Polarization Entanglement based Quantum Key Distribution over
Metropolitan Fibre Network [55.41644538483948]
We demonstrate a quantum key distribution implementation over deployed dark telecom fibers with polarisation-entangled photons generated at the O-band.
One of the photons in the pairs are propagated through 10km of deployed fiber while the others are detected locally.
This ensures continuous and stable QKD operation with an average QBER of 6.4% and a final key rate of 109 bits/s.
arXiv Detail & Related papers (2020-07-04T02:36:57Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.