Micrometer-scale integrated silicon source of time-energy entangled photons

Davide Grassani, Stefano Azzini, Marco Liscidini, Matteo Galli, Michael J. Strain, Marc Sorel, J. E. Sipe, Daniele Bajoni

Research output: Contribution to journalArticle

143 Citations (Scopus)
84 Downloads (Pure)

Abstract

Entanglement is a fundamental resource in quantum information processing. Several studies have explored the integration of sources of entangled states on a silicon chip, but the devices demonstrated so far require millimeter lengths and pump powers of the order of hundreds of milliwatts to produce an appreciable photon flux, hindering their scalability and dense integration. Microring resonators have been shown to be efficient sources of photon pairs, but entangled state emission has never been proven in these devices. Here we report the first demonstration, to the best of our knowledge, of a microring resonator capable of emitting time-energy entangled photons. We use a Franson experiment to show a violation of Bell’s inequality by more than seven standard deviations with an internal pair generation exceeding 10<sup>7</sup> Hz. The source is integrated on a silicon chip, operates at milliwatt and submilliwatt pump power, emits in the telecom band, and outputs into a photonic waveguide. These are all essential features of an entangled state emitter for a quantum photonic network.

Original languageEnglish
Pages (from-to)88-94
Number of pages7
JournalOptica Applicata
Volume2
Issue number2
DOIs
Publication statusPublished - 26 Jan 2015

Fingerprint

Silicon
Light sources
micrometers
Photons
Photonics
Resonators
photons
silicon
resonators
chips
Pumps
photonics
pumps
bells
energy
Scalability
standard deviation
resources
emitters
Waveguides

Keywords

  • interferometry
  • photonic integrated circuits
  • quantum communications
  • quantum optics
  • resonators

Cite this

Grassani, D., Azzini, S., Liscidini, M., Galli, M., Strain, M. J., Sorel, M., ... Bajoni, D. (2015). Micrometer-scale integrated silicon source of time-energy entangled photons. Optica Applicata, 2(2), 88-94. https://doi.org/10.1364/OPTICA.2.000088
Grassani, Davide ; Azzini, Stefano ; Liscidini, Marco ; Galli, Matteo ; Strain, Michael J. ; Sorel, Marc ; Sipe, J. E. ; Bajoni, Daniele. / Micrometer-scale integrated silicon source of time-energy entangled photons. In: Optica Applicata. 2015 ; Vol. 2, No. 2. pp. 88-94.
@article{6e1b1de667454fa4a63ddaea917445ad,
title = "Micrometer-scale integrated silicon source of time-energy entangled photons",
abstract = "Entanglement is a fundamental resource in quantum information processing. Several studies have explored the integration of sources of entangled states on a silicon chip, but the devices demonstrated so far require millimeter lengths and pump powers of the order of hundreds of milliwatts to produce an appreciable photon flux, hindering their scalability and dense integration. Microring resonators have been shown to be efficient sources of photon pairs, but entangled state emission has never been proven in these devices. Here we report the first demonstration, to the best of our knowledge, of a microring resonator capable of emitting time-energy entangled photons. We use a Franson experiment to show a violation of Bell’s inequality by more than seven standard deviations with an internal pair generation exceeding 107 Hz. The source is integrated on a silicon chip, operates at milliwatt and submilliwatt pump power, emits in the telecom band, and outputs into a photonic waveguide. These are all essential features of an entangled state emitter for a quantum photonic network.",
keywords = "interferometry, photonic integrated circuits, quantum communications, quantum optics, resonators",
author = "Davide Grassani and Stefano Azzini and Marco Liscidini and Matteo Galli and Strain, {Michael J.} and Marc Sorel and Sipe, {J. E.} and Daniele Bajoni",
note = "{\circledC} 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.",
year = "2015",
month = "1",
day = "26",
doi = "10.1364/OPTICA.2.000088",
language = "English",
volume = "2",
pages = "88--94",
journal = "Optica Applicata",
issn = "0078-5466",
publisher = "Optical Society of America",
number = "2",

}

Grassani, D, Azzini, S, Liscidini, M, Galli, M, Strain, MJ, Sorel, M, Sipe, JE & Bajoni, D 2015, 'Micrometer-scale integrated silicon source of time-energy entangled photons', Optica Applicata, vol. 2, no. 2, pp. 88-94. https://doi.org/10.1364/OPTICA.2.000088

Micrometer-scale integrated silicon source of time-energy entangled photons. / Grassani, Davide; Azzini, Stefano; Liscidini, Marco; Galli, Matteo; Strain, Michael J.; Sorel, Marc; Sipe, J. E.; Bajoni, Daniele.

In: Optica Applicata, Vol. 2, No. 2, 26.01.2015, p. 88-94.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Micrometer-scale integrated silicon source of time-energy entangled photons

AU - Grassani, Davide

AU - Azzini, Stefano

AU - Liscidini, Marco

AU - Galli, Matteo

AU - Strain, Michael J.

AU - Sorel, Marc

AU - Sipe, J. E.

AU - Bajoni, Daniele

N1 - © 2015 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.

PY - 2015/1/26

Y1 - 2015/1/26

N2 - Entanglement is a fundamental resource in quantum information processing. Several studies have explored the integration of sources of entangled states on a silicon chip, but the devices demonstrated so far require millimeter lengths and pump powers of the order of hundreds of milliwatts to produce an appreciable photon flux, hindering their scalability and dense integration. Microring resonators have been shown to be efficient sources of photon pairs, but entangled state emission has never been proven in these devices. Here we report the first demonstration, to the best of our knowledge, of a microring resonator capable of emitting time-energy entangled photons. We use a Franson experiment to show a violation of Bell’s inequality by more than seven standard deviations with an internal pair generation exceeding 107 Hz. The source is integrated on a silicon chip, operates at milliwatt and submilliwatt pump power, emits in the telecom band, and outputs into a photonic waveguide. These are all essential features of an entangled state emitter for a quantum photonic network.

AB - Entanglement is a fundamental resource in quantum information processing. Several studies have explored the integration of sources of entangled states on a silicon chip, but the devices demonstrated so far require millimeter lengths and pump powers of the order of hundreds of milliwatts to produce an appreciable photon flux, hindering their scalability and dense integration. Microring resonators have been shown to be efficient sources of photon pairs, but entangled state emission has never been proven in these devices. Here we report the first demonstration, to the best of our knowledge, of a microring resonator capable of emitting time-energy entangled photons. We use a Franson experiment to show a violation of Bell’s inequality by more than seven standard deviations with an internal pair generation exceeding 107 Hz. The source is integrated on a silicon chip, operates at milliwatt and submilliwatt pump power, emits in the telecom band, and outputs into a photonic waveguide. These are all essential features of an entangled state emitter for a quantum photonic network.

KW - interferometry

KW - photonic integrated circuits

KW - quantum communications

KW - quantum optics

KW - resonators

UR - http://www.scopus.com/inward/record.url?scp=84929304569&partnerID=8YFLogxK

U2 - 10.1364/OPTICA.2.000088

DO - 10.1364/OPTICA.2.000088

M3 - Article

VL - 2

SP - 88

EP - 94

JO - Optica Applicata

JF - Optica Applicata

SN - 0078-5466

IS - 2

ER -