Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength

Anna Tchebotareva; Sophie L.N. Hermans; Peter C. Humphreys; Dirk Voigt; Peter J. Harmsma; Lun K. Cheng; Ad L. Verlaan; Niels Dijkhuizen; Wim De Jong; Anaïs Dréau; Ronald Hanson

doi:10.1103/PhysRevLett.123.063601

Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength

Anna Tchebotareva, Sophie L.N. Hermans, Peter C. Humphreys, Dirk Voigt, Peter J. Harmsma, Lun K. Cheng, Ad L. Verlaan, Niels Dijkhuizen, Wim De Jong, Anaïs Dréau, Ronald Hanson

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Abstract

We report on the realization and verification of quantum entanglement between a nitrogen-vacancy electron spin qubit and a telecom-band photonic qubit. First we generate entanglement between the spin qubit and a 637 nm photonic time-bin qubit, followed by photonic quantum frequency conversion that transfers the entanglement to a 1588 nm photon. We characterize the resulting state by correlation measurements in different bases and find a lower bound to the Bell state fidelity of ≥0.77±0.03. This result presents an important step towards extending quantum networks via optical fiber infrastructure.

Original language	English
Article number	063601
Journal	Physical Review Letters
Volume	123
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.123.063601
Publication status	Published - 2019

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10.1103/PhysRevLett.123.063601

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title = "Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength",

abstract = "We report on the realization and verification of quantum entanglement between a nitrogen-vacancy electron spin qubit and a telecom-band photonic qubit. First we generate entanglement between the spin qubit and a 637 nm photonic time-bin qubit, followed by photonic quantum frequency conversion that transfers the entanglement to a 1588 nm photon. We characterize the resulting state by correlation measurements in different bases and find a lower bound to the Bell state fidelity of ≥0.77±0.03. This result presents an important step towards extending quantum networks via optical fiber infrastructure.",

author = "Anna Tchebotareva and Hermans, {Sophie L.N.} and Humphreys, {Peter C.} and Dirk Voigt and Harmsma, {Peter J.} and Cheng, {Lun K.} and Verlaan, {Ad L.} and Niels Dijkhuizen and {De Jong}, Wim and Ana{\"i}s Dr{\'e}au and Ronald Hanson",

year = "2019",

doi = "10.1103/PhysRevLett.123.063601",

language = "English",

volume = "123",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength

AU - Tchebotareva, Anna

AU - Hermans, Sophie L.N.

AU - Humphreys, Peter C.

AU - Voigt, Dirk

AU - Harmsma, Peter J.

AU - Cheng, Lun K.

AU - Verlaan, Ad L.

AU - Dijkhuizen, Niels

AU - De Jong, Wim

AU - Dréau, Anaïs

AU - Hanson, Ronald

PY - 2019

Y1 - 2019

N2 - We report on the realization and verification of quantum entanglement between a nitrogen-vacancy electron spin qubit and a telecom-band photonic qubit. First we generate entanglement between the spin qubit and a 637 nm photonic time-bin qubit, followed by photonic quantum frequency conversion that transfers the entanglement to a 1588 nm photon. We characterize the resulting state by correlation measurements in different bases and find a lower bound to the Bell state fidelity of ≥0.77±0.03. This result presents an important step towards extending quantum networks via optical fiber infrastructure.

AB - We report on the realization and verification of quantum entanglement between a nitrogen-vacancy electron spin qubit and a telecom-band photonic qubit. First we generate entanglement between the spin qubit and a 637 nm photonic time-bin qubit, followed by photonic quantum frequency conversion that transfers the entanglement to a 1588 nm photon. We characterize the resulting state by correlation measurements in different bases and find a lower bound to the Bell state fidelity of ≥0.77±0.03. This result presents an important step towards extending quantum networks via optical fiber infrastructure.

UR - http://www.scopus.com/inward/record.url?scp=85070562885&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.123.063601

DO - 10.1103/PhysRevLett.123.063601

M3 - Article

AN - SCOPUS:85070562885

SN - 0031-9007

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

M1 - 063601

ER -

Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength

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