IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v2y2011i1d10.1038_ncomms1570.html
   My bibliography  Save this article

Integrated photonic quantum gates for polarization qubits

Author

Listed:
  • Andrea Crespi

    (Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche (IFN-CNR), Piazza Leonardo da Vinci, 32, I-20133 Milano, Italy.
    Politecnico di Milano, Piazza Leonardo da Vinci, 32, I-20133 Milano, Italy.)

  • Roberta Ramponi

    (Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche (IFN-CNR), Piazza Leonardo da Vinci, 32, I-20133 Milano, Italy.
    Politecnico di Milano, Piazza Leonardo da Vinci, 32, I-20133 Milano, Italy.)

  • Roberto Osellame

    (Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche (IFN-CNR), Piazza Leonardo da Vinci, 32, I-20133 Milano, Italy.
    Politecnico di Milano, Piazza Leonardo da Vinci, 32, I-20133 Milano, Italy.)

  • Linda Sansoni

    (Sapienza Università di Roma, Piazzale Aldo Moro, 5, I-00185 Roma, Italy.)

  • Irene Bongioanni

    (Sapienza Università di Roma, Piazzale Aldo Moro, 5, I-00185 Roma, Italy.)

  • Fabio Sciarrino

    (Sapienza Università di Roma, Piazzale Aldo Moro, 5, I-00185 Roma, Italy.
    Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche (INO-CNR), Largo Enrico Fermi, 6, I-50125 Firenze, Italy.)

  • Giuseppe Vallone

    (Sapienza Università di Roma, Piazzale Aldo Moro, 5, I-00185 Roma, Italy.
    Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Via Panisperna 89/A, Compendio del Viminale, I-00184 Roma, Italy.)

  • Paolo Mataloni

    (Sapienza Università di Roma, Piazzale Aldo Moro, 5, I-00185 Roma, Italy.
    Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche (INO-CNR), Largo Enrico Fermi, 6, I-50125 Firenze, Italy.)

Abstract

The ability to manipulate quantum states of light by integrated devices may open new perspectives both for fundamental tests of quantum mechanics and for novel technological applications. However, the technology for handling polarization-encoded qubits, the most commonly adopted approach, is still missing in quantum optical circuits. Here we demonstrate the first integrated photonic controlled-NOT (CNOT) gate for polarization-encoded qubits. This result has been enabled by the integration, based on femtosecond laser waveguide writing, of partially polarizing beam splitters on a glass chip. We characterize the logical truth table of the quantum gate demonstrating its high fidelity to the expected one. In addition, we show the ability of this gate to transform separable states into entangled ones and vice versa. Finally, the full accessibility of our device is exploited to carry out a complete characterization of the CNOT gate through a quantum process tomography.

Suggested Citation

  • Andrea Crespi & Roberta Ramponi & Roberto Osellame & Linda Sansoni & Irene Bongioanni & Fabio Sciarrino & Giuseppe Vallone & Paolo Mataloni, 2011. "Integrated photonic quantum gates for polarization qubits," Nature Communications, Nature, vol. 2(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1570
    DOI: 10.1038/ncomms1570
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/ncomms1570
    File Function: Abstract
    Download Restriction: no
    File URL: https://libkey.io/10.1038/ncomms1570?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Meiting Song & John Steinmetz & Yi Zhang & Juniyali Nauriyal & Kevin Lyons & Andrew N. Jordan & Jaime Cardenas, 2021. "Enhanced on-chip phase measurement by inverse weak value amplification," Nature Communications, Nature, vol. 12(1), pages 1-7, December.
    2. Davide Pierangeli & Claudio Conti, 2023. "Single-shot polarimetry of vector beams by supervised learning," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Shuai Shi & Biao Xu & Kuan Zhang & Gen-Sheng Ye & De-Sheng Xiang & Yubao Liu & Jingzhi Wang & Daiqin Su & Lin Li, 2022. "High-fidelity photonic quantum logic gate based on near-optimal Rydberg single-photon source," Nature Communications, Nature, vol. 13(1), pages 1-6, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1570. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.